[refactor] Init

texteller/__init__.py

@@ -0,0 +1 @@
+from texteller.api import *

texteller/api/__init__.py

@@ -0,0 +1,24 @@
+from .detection import latex_detect
+from .format import format_latex
+from .inference import img2latex, paragraph2md
+from .katex import to_katex
+from .load import (
+    load_latexdet_model,
+    load_model,
+    load_textdet_model,
+    load_textrec_model,
+    load_tokenizer,
+)
+
+__all__ = [
+    "to_katex",
+    "format_latex",
+    "img2latex",
+    "paragraph2md",
+    "load_model",
+    "load_tokenizer",
+    "load_latexdet_model",
+    "load_textrec_model",
+    "load_textdet_model",
+    "latex_detect",
+]

texteller/api/criterias/__init__.py

@@ -0,0 +1,4 @@
+from .ngram import DetectRepeatingNgramCriteria
+
+
+__all__ = ["DetectRepeatingNgramCriteria"]

texteller/api/criterias/ngram.py

@@ -1,16 +1,8 @@
 import torch
-import numpy as np
-
-from transformers import RobertaTokenizerFast, GenerationConfig, StoppingCriteria
-from typing import List, Union
-
-from .transforms import inference_transform
-from .helpers import convert2rgb
-from ..model.TexTeller import TexTeller
-from ...globals import MAX_TOKEN_SIZE
+from transformers import StoppingCriteria
 
 
-class EfficientDetectRepeatingNgramCriteria(StoppingCriteria):
+class DetectRepeatingNgramCriteria(StoppingCriteria):
     """
     Stops generation efficiently if any n-gram repeats.
 
@@ -69,48 +61,3 @@ class EfficientDetectRepeatingNgramCriteria(StoppingCriteria):
             # It's a new n-gram, add it to the set and continue
             self.seen_ngrams.add(last_ngram_tuple)
             return False  # Continue generation
-
-
-def inference(
-    model: TexTeller,
-    tokenizer: RobertaTokenizerFast,
-    imgs: Union[List[str], List[np.ndarray]],
-    accelerator: str = 'cpu',
-    num_beams: int = 1,
-    max_tokens=None,
-) -> List[str]:
-    if imgs == []:
-        return []
-    if hasattr(model, 'eval'):
-        # not onnx session, turn model.eval()
-        model.eval()
-    if isinstance(imgs[0], str):
-        imgs = convert2rgb(imgs)
-    else:  # already numpy array(rgb format)
-        assert isinstance(imgs[0], np.ndarray)
-        imgs = imgs
-    imgs = inference_transform(imgs)
-    pixel_values = torch.stack(imgs)
-
-    if hasattr(model, 'eval'):
-        # not onnx session, move weights to device
-        model = model.to(accelerator)
-    pixel_values = pixel_values.to(accelerator)
-
-    generate_config = GenerationConfig(
-        max_new_tokens=MAX_TOKEN_SIZE if max_tokens is None else max_tokens,
-        num_beams=num_beams,
-        do_sample=False,
-        pad_token_id=tokenizer.pad_token_id,
-        eos_token_id=tokenizer.eos_token_id,
-        bos_token_id=tokenizer.bos_token_id,
-        # no_repeat_ngram_size=10,
-    )
-    pred = model.generate(
-        pixel_values.to(model.device),
-        generation_config=generate_config,
-        # stopping_criteria=[EfficientDetectRepeatingNgramCriteria(20)],
-    )
-
-    res = tokenizer.batch_decode(pred, skip_special_tokens=True)
-    return res

texteller/api/detection/__init__.py

@@ -0,0 +1,3 @@
+from .detect import latex_detect
+
+__all__ = ["latex_detect"]

texteller/api/detection/detect.py

@@ -0,0 +1,48 @@
+from typing import List
+
+from onnxruntime import InferenceSession
+
+from texteller.types import Bbox
+
+from .preprocess import Compose
+
+_config = {
+    "mode": "paddle",
+    "draw_threshold": 0.5,
+    "metric": "COCO",
+    "use_dynamic_shape": False,
+    "arch": "DETR",
+    "min_subgraph_size": 3,
+    "preprocess": [
+        {"interp": 2, "keep_ratio": False, "target_size": [1600, 1600], "type": "Resize"},
+        {
+            "mean": [0.0, 0.0, 0.0],
+            "norm_type": "none",
+            "std": [1.0, 1.0, 1.0],
+            "type": "NormalizeImage",
+        },
+        {"type": "Permute"},
+    ],
+    "label_list": ["isolated", "embedding"],
+}
+
+
+def latex_detect(img_path: str, predictor: InferenceSession) -> List[Bbox]:
+    transforms = Compose(_config["preprocess"])
+    inputs = transforms(img_path)
+    inputs_name = [var.name for var in predictor.get_inputs()]
+    inputs = {k: inputs[k][None,] for k in inputs_name}
+
+    outputs = predictor.run(output_names=None, input_feed=inputs)[0]
+    res = []
+    for output in outputs:
+        cls_name = _config["label_list"][int(output[0])]
+        score = output[1]
+        xmin = int(max(output[2], 0))
+        ymin = int(max(output[3], 0))
+        xmax = int(output[4])
+        ymax = int(output[5])
+        if score > 0.5:
+            res.append(Bbox(xmin, ymin, ymax - ymin, xmax - xmin, cls_name, score))
+
+    return res

texteller/api/detection/preprocess.py

@@ -0,0 +1,161 @@
+import copy
+
+import cv2
+import numpy as np
+
+
+def decode_image(img_path):
+    if isinstance(img_path, str):
+        with open(img_path, "rb") as f:
+            im_read = f.read()
+        data = np.frombuffer(im_read, dtype="uint8")
+    else:
+        assert isinstance(img_path, np.ndarray)
+        data = img_path
+
+    im = cv2.imdecode(data, 1)  # BGR mode, but need RGB mode
+    im = cv2.cvtColor(im, cv2.COLOR_BGR2RGB)
+    img_info = {
+        "im_shape": np.array(im.shape[:2], dtype=np.float32),
+        "scale_factor": np.array([1.0, 1.0], dtype=np.float32),
+    }
+    return im, img_info
+
+
+class Resize(object):
+    """resize image by target_size and max_size
+    Args:
+        target_size (int): the target size of image
+        keep_ratio (bool): whether keep_ratio or not, default true
+        interp (int): method of resize
+    """
+
+    def __init__(self, target_size, keep_ratio=True, interp=cv2.INTER_LINEAR):
+        if isinstance(target_size, int):
+            target_size = [target_size, target_size]
+        self.target_size = target_size
+        self.keep_ratio = keep_ratio
+        self.interp = interp
+
+    def __call__(self, im, im_info):
+        """
+        Args:
+            im (np.ndarray): image (np.ndarray)
+            im_info (dict): info of image
+        Returns:
+            im (np.ndarray):  processed image (np.ndarray)
+            im_info (dict): info of processed image
+        """
+        assert len(self.target_size) == 2
+        assert self.target_size[0] > 0 and self.target_size[1] > 0
+        im_channel = im.shape[2]
+        im_scale_y, im_scale_x = self.generate_scale(im)
+        im = cv2.resize(im, None, None, fx=im_scale_x, fy=im_scale_y, interpolation=self.interp)
+        im_info["im_shape"] = np.array(im.shape[:2]).astype("float32")
+        im_info["scale_factor"] = np.array([im_scale_y, im_scale_x]).astype("float32")
+        return im, im_info
+
+    def generate_scale(self, im):
+        """
+        Args:
+            im (np.ndarray): image (np.ndarray)
+        Returns:
+            im_scale_x: the resize ratio of X
+            im_scale_y: the resize ratio of Y
+        """
+        origin_shape = im.shape[:2]
+        im_c = im.shape[2]
+        if self.keep_ratio:
+            im_size_min = np.min(origin_shape)
+            im_size_max = np.max(origin_shape)
+            target_size_min = np.min(self.target_size)
+            target_size_max = np.max(self.target_size)
+            im_scale = float(target_size_min) / float(im_size_min)
+            if np.round(im_scale * im_size_max) > target_size_max:
+                im_scale = float(target_size_max) / float(im_size_max)
+            im_scale_x = im_scale
+            im_scale_y = im_scale
+        else:
+            resize_h, resize_w = self.target_size
+            im_scale_y = resize_h / float(origin_shape[0])
+            im_scale_x = resize_w / float(origin_shape[1])
+        return im_scale_y, im_scale_x
+
+
+class NormalizeImage(object):
+    """normalize image
+    Args:
+        mean (list): im - mean
+        std (list): im / std
+        is_scale (bool): whether need im / 255
+        norm_type (str): type in ['mean_std', 'none']
+    """
+
+    def __init__(self, mean, std, is_scale=True, norm_type="mean_std"):
+        self.mean = mean
+        self.std = std
+        self.is_scale = is_scale
+        self.norm_type = norm_type
+
+    def __call__(self, im, im_info):
+        """
+        Args:
+            im (np.ndarray): image (np.ndarray)
+            im_info (dict): info of image
+        Returns:
+            im (np.ndarray):  processed image (np.ndarray)
+            im_info (dict): info of processed image
+        """
+        im = im.astype(np.float32, copy=False)
+        if self.is_scale:
+            scale = 1.0 / 255.0
+            im *= scale
+
+        if self.norm_type == "mean_std":
+            mean = np.array(self.mean)[np.newaxis, np.newaxis, :]
+            std = np.array(self.std)[np.newaxis, np.newaxis, :]
+            im -= mean
+            im /= std
+        return im, im_info
+
+
+class Permute(object):
+    """permute image
+    Args:
+        to_bgr (bool): whether convert RGB to BGR
+        channel_first (bool): whether convert HWC to CHW
+    """
+
+    def __init__(
+        self,
+    ):
+        super(Permute, self).__init__()
+
+    def __call__(self, im, im_info):
+        """
+        Args:
+            im (np.ndarray): image (np.ndarray)
+            im_info (dict): info of image
+        Returns:
+            im (np.ndarray):  processed image (np.ndarray)
+            im_info (dict): info of processed image
+        """
+        im = im.transpose((2, 0, 1)).copy()
+        return im, im_info
+
+
+class Compose:
+    def __init__(self, transforms):
+        self.transforms = []
+        for op_info in transforms:
+            new_op_info = op_info.copy()
+            op_type = new_op_info.pop("type")
+            self.transforms.append(eval(op_type)(**new_op_info))
+
+    def __call__(self, img_path):
+        img, im_info = decode_image(img_path)
+        for t in self.transforms:
+            img, im_info = t(img, im_info)
+        inputs = copy.deepcopy(im_info)
+        inputs["image"] = img
+        return inputs

texteller/api/format.py

@@ -5,9 +5,8 @@ Based on the Rust implementation at https://github.com/WGUNDERWOOD/tex-fmt
 """
 
 import re
-import argparse
 from dataclasses import dataclass
-from typing import List, Optional, Tuple, Dict, Set
+from typing import List, Optional, Tuple
 
 # Constants
 LINE_END = "\n"
@@ -49,7 +48,7 @@ RE_SPLITTING_SHARED_LINE_CAPTURE = re.compile(f"(?P<prev>\\S.*?)(?P<env>{SPLITTI
 
 @dataclass
 class Args:
-    """Command line arguments and configuration."""
+    """Formatter configuration."""
 
     tabchar: str = " "
     tabsize: int = 4
@@ -542,13 +541,29 @@ def indents_return_to_zero(state: State) -> bool:
     return state.indent.actual == 0
 
 
-def format_latex(
-    old_text: str, file: str = "input.tex", args: Optional[Args] = None
-) -> Tuple[str, List[Log]]:
-    """Central function to format a LaTeX string."""
-    if args is None:
-        args = Args()
+def format_latex(text: str) -> str:
+    """Format LaTeX text with default formatting options.
 
+    This is the main API function for formatting LaTeX text.
+    It uses pre-defined default values for all formatting parameters.
+
+    Args:
+        text: LaTeX text to format
+
+    Returns:
+        Formatted LaTeX text
+    """
+    # Use default configuration
+    args = Args()
+    file = "input.tex"
+
+    # Format and return only the text
+    formatted_text, _ = _format_latex(text, file, args)
+    return formatted_text.strip()
+
+
+def _format_latex(old_text: str, file: str, args: Args) -> Tuple[str, List[Log]]:
+    """Internal function to format a LaTeX string."""
     logs = []
     logs.append(Log(level="INFO", file=file, message="Formatting started."))
 
@@ -636,63 +651,3 @@ def format_latex(
     logs.append(Log(level="INFO", file=file, message="Formatting complete."))
 
     return new_text, logs
-
-
-def main():
-    """Command-line entry point."""
-    parser = argparse.ArgumentParser(description="Format LaTeX files")
-    parser.add_argument("file", help="LaTeX file to format")
-    parser.add_argument(
-        "--tabchar",
-        choices=["space", "tab"],
-        default="space",
-        help="Character to use for indentation",
-    )
-    parser.add_argument("--tabsize", type=int, default=4, help="Number of spaces per indent level")
-    parser.add_argument("--wrap", action="store_true", help="Enable line wrapping")
-    parser.add_argument("--wraplen", type=int, default=80, help="Maximum line length")
-    parser.add_argument(
-        "--wrapmin", type=int, default=40, help="Minimum line length before wrapping"
-    )
-    parser.add_argument(
-        "--lists", nargs="+", default=[], help="Additional environments to indent as lists"
-    )
-    parser.add_argument("--verbose", "-v", action="count", default=0, help="Increase verbosity")
-    parser.add_argument("--output", "-o", help="Output file (default: overwrite input)")
-
-    args_parsed = parser.parse_args()
-
-    # Convert command line args to our Args class
-    args = Args(
-        tabchar="\t" if args_parsed.tabchar == "tab" else " ",
-        tabsize=args_parsed.tabsize,
-        wrap=args_parsed.wrap,
-        wraplen=args_parsed.wraplen,
-        wrapmin=args_parsed.wrapmin,
-        lists=args_parsed.lists,
-        verbosity=args_parsed.verbose,
-    )
-
-    # Read input file
-    with open(args_parsed.file, "r", encoding="utf-8") as f:
-        text = f.read()
-
-    # Format the text
-    formatted_text, logs = format_latex(text, args_parsed.file, args)
-
-    # Print logs if verbose
-    if args.verbosity > 0:
-        for log in logs:
-            if log.linum_new is not None:
-                print(f"{log.level} {log.file}:{log.linum_new}:{log.linum_old}: {log.message}")
-            else:
-                print(f"{log.level} {log.file}: {log.message}")
-
-    # Write output
-    output_file = args_parsed.output or args_parsed.file
-    with open(output_file, "w", encoding="utf-8") as f:
-        f.write(formatted_text)
-
-
-if __name__ == "__main__":
-    main()

texteller/api/inference.py

@@ -0,0 +1,241 @@
+import re
+import time
+from collections import Counter
+from typing import Literal
+
+import cv2
+import numpy as np
+import torch
+from onnxruntime import InferenceSession
+from optimum.onnxruntime import ORTModelForVision2Seq
+from transformers import GenerationConfig, RobertaTokenizerFast
+
+from texteller.constants import MAX_TOKEN_SIZE
+from texteller.logger import get_logger
+from texteller.paddleocr import predict_det, predict_rec
+from texteller.types import Bbox, TexTellerModel
+from texteller.utils import (
+    bbox_merge,
+    get_device,
+    mask_img,
+    readimgs,
+    remove_style,
+    slice_from_image,
+    split_conflict,
+    transform,
+    add_newlines,
+)
+
+from .detection import latex_detect
+from .format import format_latex
+from .katex import to_katex
+
+_logger = get_logger()
+
+
+def img2latex(
+    model: TexTellerModel,
+    tokenizer: RobertaTokenizerFast,
+    images: list[str] | list[np.ndarray],
+    device: torch.device | None = None,
+    out_format: Literal["latex", "katex"] = "latex",
+    keep_style: bool = False,
+    max_tokens: int = MAX_TOKEN_SIZE,
+    num_beams: int = 1,
+    no_repeat_ngram_size: int = 0,
+) -> list[str]:
+    """
+    Convert images to LaTeX or KaTeX formatted strings.
+
+    Args:
+        model: The TexTeller or ORTModelForVision2Seq model instance
+        tokenizer: The tokenizer for the model
+        images: List of image paths or numpy arrays (RGB format)
+        device: The torch device to use (defaults to available GPU or CPU)
+        out_format: Output format, either "latex" or "katex"
+        keep_style: Whether to keep the style of the LaTeX
+        max_tokens: Maximum number of tokens to generate
+        num_beams: Number of beams for beam search
+        no_repeat_ngram_size: Size of n-grams to prevent repetition
+
+    Returns:
+        List of LaTeX or KaTeX strings corresponding to each input image
+
+    Example usage:
+        >>> import torch
+        >>> from texteller import load_model, load_tokenizer, img2latex
+
+        >>> model = load_model(model_path=None, use_onnx=False)
+        >>> tokenizer = load_tokenizer(tokenizer_path=None)
+        >>> device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
+
+        >>> res = img2latex(model, tokenizer, ["path/to/image.png"], device=device, out_format="katex")
+    """
+    assert isinstance(images, list)
+    assert len(images) > 0
+
+    if device is None:
+        device = get_device()
+
+    if device.type != model.device.type:
+        if isinstance(model, ORTModelForVision2Seq):
+            _logger.warning(
+                f"Onnxruntime device mismatch: detected {str(device)} but model is on {str(model.device)}, using {str(model.device)} instead"
+            )
+        else:
+            model = model.to(device=device)
+
+    if isinstance(images[0], str):
+        images = readimgs(images)
+    else:  # already numpy array(rgb format)
+        assert isinstance(images[0], np.ndarray)
+        images = images
+
+    images = transform(images)
+    pixel_values = torch.stack(images)
+
+    generate_config = GenerationConfig(
+        max_new_tokens=max_tokens,
+        num_beams=num_beams,
+        do_sample=False,
+        pad_token_id=tokenizer.pad_token_id,
+        eos_token_id=tokenizer.eos_token_id,
+        bos_token_id=tokenizer.bos_token_id,
+        no_repeat_ngram_size=no_repeat_ngram_size,
+    )
+    pred = model.generate(
+        pixel_values.to(model.device),
+        generation_config=generate_config,
+    )
+
+    res = tokenizer.batch_decode(pred, skip_special_tokens=True)
+
+    if out_format == "katex":
+        res = [to_katex(r) for r in res]
+
+    if not keep_style:
+        res = [remove_style(r) for r in res]
+
+    res = [format_latex(r) for r in res]
+    res = [add_newlines(r) for r in res]
+    return res
+
+
+def paragraph2md(
+    img_path: str,
+    latexdet_model: InferenceSession,
+    textdet_model: predict_det.TextDetector,
+    textrec_model: predict_rec.TextRecognizer,
+    latexrec_model: TexTellerModel,
+    tokenizer: RobertaTokenizerFast,
+    device: torch.device | None = None,
+    num_beams=1,
+) -> str:
+    """
+    Input a mixed image of formula text and output str (in markdown syntax)
+    """
+    img = cv2.imread(img_path)
+    corners = [tuple(img[0, 0]), tuple(img[0, -1]), tuple(img[-1, 0]), tuple(img[-1, -1])]
+    bg_color = np.array(Counter(corners).most_common(1)[0][0])
+
+    start_time = time.time()
+    latex_bboxes = latex_detect(img_path, latexdet_model)
+    end_time = time.time()
+    _logger.info(f"latex_det_model time: {end_time - start_time:.2f}s")
+    latex_bboxes = sorted(latex_bboxes)
+    latex_bboxes = bbox_merge(latex_bboxes)
+    masked_img = mask_img(img, latex_bboxes, bg_color)
+
+    start_time = time.time()
+    det_prediction, _ = textdet_model(masked_img)
+    end_time = time.time()
+    _logger.info(f"ocr_det_model time: {end_time - start_time:.2f}s")
+    ocr_bboxes = [
+        Bbox(
+            p[0][0],
+            p[0][1],
+            p[3][1] - p[0][1],
+            p[1][0] - p[0][0],
+            label="text",
+            confidence=None,
+            content=None,
+        )
+        for p in det_prediction
+    ]
+
+    ocr_bboxes = sorted(ocr_bboxes)
+    ocr_bboxes = bbox_merge(ocr_bboxes)
+    ocr_bboxes = split_conflict(ocr_bboxes, latex_bboxes)
+    ocr_bboxes = list(filter(lambda x: x.label == "text", ocr_bboxes))
+
+    sliced_imgs: list[np.ndarray] = slice_from_image(img, ocr_bboxes)
+    start_time = time.time()
+    rec_predictions, _ = textrec_model(sliced_imgs)
+    end_time = time.time()
+    _logger.info(f"ocr_rec_model time: {end_time - start_time:.2f}s")
+
+    assert len(rec_predictions) == len(ocr_bboxes)
+    for content, bbox in zip(rec_predictions, ocr_bboxes):
+        bbox.content = content[0]
+
+    latex_imgs = []
+    for bbox in latex_bboxes:
+        latex_imgs.append(img[bbox.p.y : bbox.p.y + bbox.h, bbox.p.x : bbox.p.x + bbox.w])
+    start_time = time.time()
+    latex_rec_res = img2latex(
+        model=latexrec_model,
+        tokenizer=tokenizer,
+        images=latex_imgs,
+        num_beams=num_beams,
+        out_format="katex",
+        device=device,
+        keep_style=False,
+    )
+    end_time = time.time()
+    _logger.info(f"latex_rec_model time: {end_time - start_time:.2f}s")
+
+    for bbox, content in zip(latex_bboxes, latex_rec_res):
+        if bbox.label == "embedding":
+            bbox.content = " $" + content + "$ "
+        elif bbox.label == "isolated":
+            bbox.content = "\n\n" + r"$$" + content + r"$$" + "\n\n"
+
+    bboxes = sorted(ocr_bboxes + latex_bboxes)
+    if bboxes == []:
+        return ""
+
+    md = ""
+    prev = Bbox(bboxes[0].p.x, bboxes[0].p.y, -1, -1, label="guard")
+    for curr in bboxes:
+        # Add the formula number back to the isolated formula
+        if prev.label == "isolated" and curr.label == "text" and prev.same_row(curr):
+            curr.content = curr.content.strip()
+            if curr.content.startswith("(") and curr.content.endswith(")"):
+                curr.content = curr.content[1:-1]
+
+            if re.search(r"\\tag\{.*\}$", md[:-4]) is not None:
+                # in case of multiple tag
+                md = md[:-5] + f", {curr.content}" + "}" + md[-4:]
+            else:
+                md = md[:-4] + f"\\tag{{{curr.content}}}" + md[-4:]
+            continue
+
+        if not prev.same_row(curr):
+            md += " "
+
+        if curr.label == "embedding":
+            # remove the bold effect from inline formulas
+            curr.content = remove_style(curr.content)
+
+            # change split environment into aligned
+            curr.content = curr.content.replace(r"\begin{split}", r"\begin{aligned}")
+            curr.content = curr.content.replace(r"\end{split}", r"\end{aligned}")
+
+            # remove extra spaces (keeping only one)
+            curr.content = re.sub(r" +", " ", curr.content)
+            assert curr.content.startswith("$") and curr.content.endswith("$")
+            curr.content = " $" + curr.content.strip("$") + "$ "
+        md += curr.content
+        prev = curr
+
+    return md.strip()

texteller/api/katex.py

@@ -1,73 +1,10 @@
 import re
 
-from .latex_formatter import format_latex
+from ..utils.latex import change_all
+from .format import format_latex
 
 
-def change(input_str, old_inst, new_inst, old_surr_l, old_surr_r, new_surr_l, new_surr_r):
-    result = ""
-    i = 0
-    n = len(input_str)
-
-    while i < n:
-        if input_str[i : i + len(old_inst)] == old_inst:
-            # check if the old_inst is followed by old_surr_l
-            start = i + len(old_inst)
-        else:
-            result += input_str[i]
-            i += 1
-            continue
-
-        if start < n and input_str[start] == old_surr_l:
-            # found an old_inst followed by old_surr_l, now look for the matching old_surr_r
-            count = 1
-            j = start + 1
-            escaped = False
-            while j < n and count > 0:
-                if input_str[j] == '\\' and not escaped:
-                    escaped = True
-                    j += 1
-                    continue
-                if input_str[j] == old_surr_r and not escaped:
-                    count -= 1
-                    if count == 0:
-                        break
-                elif input_str[j] == old_surr_l and not escaped:
-                    count += 1
-                escaped = False
-                j += 1
-
-            if count == 0:
-                assert j < n
-                assert input_str[start] == old_surr_l
-                assert input_str[j] == old_surr_r
-                inner_content = input_str[start + 1 : j]
-                # Replace the content with new pattern
-                result += new_inst + new_surr_l + inner_content + new_surr_r
-                i = j + 1
-                continue
-            else:
-                assert count >= 1
-                assert j == n
-                print("Warning: unbalanced surrogate pair in input string")
-                result += new_inst + new_surr_l
-                i = start + 1
-                continue
-        else:
-            result += input_str[i:start]
-            i = start
-
-    if old_inst != new_inst and (old_inst + old_surr_l) in result:
-        return change(result, old_inst, new_inst, old_surr_l, old_surr_r, new_surr_l, new_surr_r)
-    else:
-        return result
-
-
-def find_substring_positions(string, substring):
-    positions = [match.start() for match in re.finditer(re.escape(substring), string)]
-    return positions
-
-
-def rm_dollar_surr(content):
+def _rm_dollar_surr(content):
     pattern = re.compile(r'\\[a-zA-Z]+\$.*?\$|\$.*?\$')
     matches = pattern.findall(content)
 
@@ -79,19 +16,6 @@ def rm_dollar_surr(content):
     return content
 
 
-def change_all(input_str, old_inst, new_inst, old_surr_l, old_surr_r, new_surr_l, new_surr_r):
-    pos = find_substring_positions(input_str, old_inst + old_surr_l)
-    res = list(input_str)
-    for p in pos[::-1]:
-        res[p:] = list(
-            change(
-                ''.join(res[p:]), old_inst, new_inst, old_surr_l, old_surr_r, new_surr_l, new_surr_r
-            )
-        )
-    res = ''.join(res)
-    return res
-
-
 def to_katex(formula: str) -> str:
     res = formula
     # remove mbox surrounding
@@ -182,13 +106,13 @@ def to_katex(formula: str) -> str:
     res = re.sub(r'(\\text\{[^}]*\}\s*){2,}', merge_texts, res)
 
     res = res.replace(r'\bf ', '')
-    res = rm_dollar_surr(res)
+    res = _rm_dollar_surr(res)
 
     # remove extra spaces (keeping only one)
     res = re.sub(r' +', ' ', res)
 
     # format latex
     res = res.strip()
-    res, logs = format_latex(res)
+    res = format_latex(res)
 
     return res

texteller/api/load.py

@@ -0,0 +1,66 @@
+from pathlib import Path
+
+import wget
+from onnxruntime import InferenceSession
+from transformers import RobertaTokenizerFast
+
+from texteller.constants import LATEX_DET_MODEL_URL, TEXT_DET_MODEL_URL, TEXT_REC_MODEL_URL
+from texteller.globals import Globals
+from texteller.logger import get_logger
+from texteller.models import TexTeller
+from texteller.paddleocr import predict_det, predict_rec
+from texteller.paddleocr.utility import parse_args
+from texteller.utils import cuda_available, mkdir, resolve_path
+from texteller.types import TexTellerModel
+
+_logger = get_logger(__name__)
+
+
+def load_model(model_dir: str | None = None, use_onnx: bool = False) -> TexTellerModel:
+    return TexTeller.from_pretrained(model_dir, use_onnx=use_onnx)
+
+
+def load_tokenizer(tokenizer_dir: str | None = None) -> RobertaTokenizerFast:
+    return TexTeller.get_tokenizer(tokenizer_dir)
+
+
+def load_latexdet_model() -> InferenceSession:
+    fpath = _maybe_download(LATEX_DET_MODEL_URL)
+    return InferenceSession(
+        resolve_path(fpath),
+        providers=["CUDAExecutionProvider" if cuda_available() else "CPUExecutionProvider"],
+    )
+
+
+def load_textrec_model() -> predict_rec.TextRecognizer:
+    fpath = _maybe_download(TEXT_REC_MODEL_URL)
+    paddleocr_args = parse_args()
+    paddleocr_args.use_onnx = True
+    paddleocr_args.rec_model_dir = resolve_path(fpath)
+    paddleocr_args.use_gpu = cuda_available()
+    predictor = predict_rec.TextRecognizer(paddleocr_args)
+    return predictor
+
+
+def load_textdet_model() -> predict_det.TextDetector:
+    fpath = _maybe_download(TEXT_DET_MODEL_URL)
+    paddleocr_args = parse_args()
+    paddleocr_args.use_onnx = True
+    paddleocr_args.det_model_dir = resolve_path(fpath)
+    paddleocr_args.use_gpu = cuda_available()
+    predictor = predict_det.TextDetector(paddleocr_args)
+    return predictor
+
+
+def _maybe_download(url: str, dirpath: str | None = None, force: bool = False) -> Path:
+    if dirpath is None:
+        dirpath = Globals().cache_dir
+    mkdir(dirpath)
+
+    fname = Path(url).name
+    fpath = Path(dirpath) / fname
+    if not fpath.exists() or force:
+        _logger.info(f"Downloading {fname} from {url} to {fpath}")
+        wget.download(url, resolve_path(fpath))
+
+    return fpath

texteller/cli/__init__.py

@@ -0,0 +1,25 @@
+"""
+CLI entry point for TexTeller.
+"""
+
+import time
+
+import click
+
+from texteller.cli.commands.inference import inference
+from texteller.cli.commands.launch import launch
+from texteller.cli.commands.web import web
+
+
+@click.group()
+def cli():
+    pass
+
+
+cli.add_command(inference)
+cli.add_command(web)
+cli.add_command(launch)
+
+
+if __name__ == "__main__":
+    cli()

texteller/cli/commands/__init__.py

@@ -0,0 +1,3 @@
+"""
+CLI commands for TexTeller
+"""

texteller/cli/commands/inference.py

@@ -0,0 +1,51 @@
+"""
+CLI command for formula inference from images.
+"""
+
+import click
+
+from texteller.api import img2latex, load_model, load_tokenizer
+
+
+@click.command()
+@click.argument("image_path", type=click.Path(exists=True, file_okay=True, dir_okay=False))
+@click.option(
+    "--model-path",
+    type=click.Path(exists=True, file_okay=False, dir_okay=True),
+    default=None,
+    help="Path to the model dir path, if not provided, will use model from huggingface repo",
+)
+@click.option(
+    "--tokenizer-path",
+    type=click.Path(exists=True, file_okay=False, dir_okay=True),
+    default=None,
+    help="Path to the tokenizer dir path, if not provided, will use tokenizer from huggingface repo",
+)
+@click.option(
+    "--output-format",
+    type=click.Choice(["latex", "katex"]),
+    default="katex",
+    help="Output format, either latex or katex",
+)
+@click.option(
+    "--keep-style",
+    is_flag=True,
+    default=False,
+    help="Whether to keep the style of the LaTeX (e.g. bold, italic, etc.)",
+)
+def inference(image_path, model_path, tokenizer_path, output_format, keep_style):
+    """
+    CLI command for formula inference from images.
+    """
+    model = load_model(model_dir=model_path)
+    tknz = load_tokenizer(tokenizer_dir=tokenizer_path)
+
+    pred = img2latex(
+        model=model,
+        tokenizer=tknz,
+        images=[image_path],
+        out_format=output_format,
+        keep_style=keep_style,
+    )[0]
+
+    click.echo(f"Predicted LaTeX: ```\n{pred}\n```")

texteller/cli/commands/launch/__init__.py

@@ -0,0 +1,106 @@
+"""
+CLI commands for launching server.
+"""
+
+import sys
+import time
+
+import click
+from ray import serve
+
+from texteller.globals import Globals
+from texteller.utils import get_device
+
+
+@click.command()
+@click.option(
+    "-ckpt",
+    "--checkpoint_dir",
+    type=click.Path(exists=True, file_okay=False, dir_okay=True),
+    default=None,
+    help="Path to the checkpoint directory, if not provided, will use model from huggingface repo",
+)
+@click.option(
+    "-tknz",
+    "--tokenizer_dir",
+    type=click.Path(exists=True, file_okay=False, dir_okay=True),
+    default=None,
+    help="Path to the tokenizer directory, if not provided, will use tokenizer from huggingface repo",
+)
+@click.option(
+    "-p",
+    "--port",
+    type=int,
+    default=8000,
+    help="Port to run the server on",
+)
+@click.option(
+    "--num-replicas",
+    type=int,
+    default=1,
+    help="Number of replicas to run the server on",
+)
+@click.option(
+    "--ncpu-per-replica",
+    type=float,
+    default=1.0,
+    help="Number of CPUs per replica",
+)
+@click.option(
+    "--ngpu-per-replica",
+    type=float,
+    default=1.0,
+    help="Number of GPUs per replica",
+)
+@click.option(
+    "--num-beams",
+    type=int,
+    default=1,
+    help="Number of beams to use",
+)
+@click.option(
+    "--use-onnx",
+    is_flag=True,
+    type=bool,
+    default=False,
+    help="Use ONNX runtime",
+)
+def launch(
+    checkpoint_dir,
+    tokenizer_dir,
+    port,
+    num_replicas,
+    ncpu_per_replica,
+    ngpu_per_replica,
+    num_beams,
+    use_onnx,
+):
+    """Launch the api server"""
+    device = get_device()
+    if ngpu_per_replica > 0 and not device.type == "cuda":
+        click.echo(
+            click.style(
+                f"Error: --ngpu-per-replica > 0 but detected device is {device.type}",
+                fg="red",
+            )
+        )
+        sys.exit(1)
+
+    Globals().num_replicas = num_replicas
+    Globals().ncpu_per_replica = ncpu_per_replica
+    Globals().ngpu_per_replica = ngpu_per_replica
+    from texteller.cli.commands.launch.server import Ingress, TexTellerServer
+
+    serve.start(http_options={"host": "0.0.0.0", "port": port})
+    rec_server = TexTellerServer.bind(
+        checkpoint_dir=checkpoint_dir,
+        tokenizer_dir=tokenizer_dir,
+        use_onnx=use_onnx,
+        num_beams=num_beams,
+    )
+    ingress = Ingress.bind(rec_server)
+
+    serve.run(ingress, route_prefix="/predict")
+
+    while True:
+        time.sleep(1)

texteller/cli/commands/launch/server.py

@@ -0,0 +1,69 @@
+import numpy as np
+import cv2
+
+from starlette.requests import Request
+from ray import serve
+from ray.serve.handle import DeploymentHandle
+
+from texteller.api import load_model, load_tokenizer, img2latex
+from texteller.utils import get_device
+from texteller.globals import Globals
+from typing import Literal
+
+
+@serve.deployment(
+    num_replicas=Globals().num_replicas,
+    ray_actor_options={
+        "num_cpus": Globals().ncpu_per_replica,
+        "num_gpus": Globals().ngpu_per_replica * 1.0 / 2,
+    },
+)
+class TexTellerServer:
+    def __init__(
+        self,
+        checkpoint_dir: str,
+        tokenizer_dir: str,
+        use_onnx: bool = False,
+        out_format: Literal["latex", "katex"] = "katex",
+        keep_style: bool = False,
+        num_beams: int = 1,
+    ) -> None:
+        self.model = load_model(
+            model_dir=checkpoint_dir,
+            use_onnx=use_onnx,
+        )
+        self.tokenizer = load_tokenizer(tokenizer_dir=tokenizer_dir)
+        self.num_beams = num_beams
+        self.out_format = out_format
+        self.keep_style = keep_style
+
+        if not use_onnx:
+            self.model = self.model.to(get_device())
+
+    def predict(self, image_nparray: np.ndarray) -> str:
+        return img2latex(
+            model=self.model,
+            tokenizer=self.tokenizer,
+            images=[image_nparray],
+            device=get_device(),
+            out_format=self.out_format,
+            keep_style=self.keep_style,
+            num_beams=self.num_beams,
+        )[0]
+
+
+@serve.deployment()
+class Ingress:
+    def __init__(self, rec_server: DeploymentHandle) -> None:
+        self.texteller_server = rec_server
+
+    async def __call__(self, request: Request) -> str:
+        form = await request.form()
+        img_rb = await form["img"].read()
+
+        img_nparray = np.frombuffer(img_rb, np.uint8)
+        img_nparray = cv2.imdecode(img_nparray, cv2.IMREAD_COLOR)
+        img_nparray = cv2.cvtColor(img_nparray, cv2.COLOR_BGR2RGB)
+
+        pred = await self.texteller_server.predict.remote(img_nparray)
+        return pred

texteller/cli/commands/web/__init__.py

@@ -0,0 +1,9 @@
+import os
+import click
+from pathlib import Path
+
+
+@click.command()
+def web():
+    """Launch the web interface for TexTeller."""
+    os.system(f"streamlit run {Path(__file__).parent / 'streamlit_demo.py'}")

texteller/cli/commands/web/streamlit_demo.py

@@ -0,0 +1,225 @@
+import base64
+import io
+import os
+import re
+import shutil
+import tempfile
+
+import streamlit as st
+from PIL import Image
+from streamlit_paste_button import paste_image_button as pbutton
+
+from texteller.api import (
+    img2latex,
+    load_latexdet_model,
+    load_model,
+    load_textdet_model,
+    load_textrec_model,
+    load_tokenizer,
+    paragraph2md,
+)
+from texteller.cli.commands.web.style import (
+    HEADER_HTML,
+    IMAGE_EMBED_HTML,
+    IMAGE_INFO_HTML,
+    SUCCESS_GIF_HTML,
+)
+from texteller.utils import str2device
+
+st.set_page_config(page_title="TexTeller", page_icon="🧮")
+
+
+@st.cache_resource
+def get_texteller(use_onnx):
+    return load_model(use_onnx=use_onnx)
+
+
+@st.cache_resource
+def get_tokenizer():
+    return load_tokenizer()
+
+
+@st.cache_resource
+def get_latexdet_model():
+    return load_latexdet_model()
+
+
+@st.cache_resource()
+def get_textrec_model():
+    return load_textrec_model()
+
+
+@st.cache_resource()
+def get_textdet_model():
+    return load_textdet_model()
+
+
+def get_image_base64(img_file):
+    buffered = io.BytesIO()
+    img_file.seek(0)
+    img = Image.open(img_file)
+    img.save(buffered, format="PNG")
+    return base64.b64encode(buffered.getvalue()).decode()
+
+
+def on_file_upload():
+    st.session_state["UPLOADED_FILE_CHANGED"] = True
+
+
+def change_side_bar():
+    st.session_state["CHANGE_SIDEBAR_FLAG"] = True
+
+
+if "start" not in st.session_state:
+    st.session_state["start"] = 1
+    st.toast("Hooray!", icon="🎉")
+
+if "UPLOADED_FILE_CHANGED" not in st.session_state:
+    st.session_state["UPLOADED_FILE_CHANGED"] = False
+
+if "CHANGE_SIDEBAR_FLAG" not in st.session_state:
+    st.session_state["CHANGE_SIDEBAR_FLAG"] = False
+
+if "INF_MODE" not in st.session_state:
+    st.session_state["INF_MODE"] = "Formula recognition"
+
+
+# ====== <sidebar> ======
+
+with st.sidebar:
+    num_beams = 1
+
+    st.markdown("# 🔨️ Config")
+    st.markdown("")
+
+    inf_mode = st.selectbox(
+        "Inference mode",
+        ("Formula recognition", "Paragraph recognition"),
+        on_change=change_side_bar,
+    )
+
+    num_beams = st.number_input(
+        "Number of beams", min_value=1, max_value=20, step=1, on_change=change_side_bar
+    )
+
+    device = st.radio("device", ("cpu", "cuda", "mps"), on_change=change_side_bar)
+
+    st.markdown("## Seedup")
+    use_onnx = st.toggle("ONNX Runtime ")
+
+
+# ====== </sidebar> ======
+
+
+# ====== <page> ======
+
+latexrec_model = get_texteller(use_onnx)
+tokenizer = get_tokenizer()
+
+if inf_mode == "Paragraph recognition":
+    latexdet_model = get_latexdet_model()
+    textrec_model = get_textrec_model()
+    textdet_model = get_textdet_model()
+
+st.markdown(HEADER_HTML, unsafe_allow_html=True)
+
+uploaded_file = st.file_uploader(" ", type=["jpg", "png"], on_change=on_file_upload)
+
+paste_result = pbutton(
+    label="📋 Paste an image",
+    background_color="#5BBCFF",
+    hover_background_color="#3498db",
+)
+st.write("")
+
+if st.session_state["CHANGE_SIDEBAR_FLAG"] is True:
+    st.session_state["CHANGE_SIDEBAR_FLAG"] = False
+elif uploaded_file or paste_result.image_data is not None:
+    if st.session_state["UPLOADED_FILE_CHANGED"] is False and paste_result.image_data is not None:
+        uploaded_file = io.BytesIO()
+        paste_result.image_data.save(uploaded_file, format="PNG")
+        uploaded_file.seek(0)
+
+    if st.session_state["UPLOADED_FILE_CHANGED"] is True:
+        st.session_state["UPLOADED_FILE_CHANGED"] = False
+
+    img = Image.open(uploaded_file)
+
+    temp_dir = tempfile.mkdtemp()
+    png_fpath = os.path.join(temp_dir, "image.png")
+    img.save(png_fpath, "PNG")
+
+    with st.container(height=300):
+        img_base64 = get_image_base64(uploaded_file)
+
+        st.markdown(
+            IMAGE_EMBED_HTML.format(img_base64=img_base64),
+            unsafe_allow_html=True,
+        )
+
+    st.markdown(
+        IMAGE_INFO_HTML.format(img_height=img.height, img_width=img.width),
+        unsafe_allow_html=True,
+    )
+
+    st.write("")
+
+    with st.spinner("Predicting..."):
+        if inf_mode == "Formula recognition":
+            pred = img2latex(
+                model=latexrec_model,
+                tokenizer=tokenizer,
+                images=[png_fpath],
+                device=str2device(device),
+                out_format="katex",
+                num_beams=num_beams,
+                keep_style=False,
+            )[0]
+        else:
+            pred = paragraph2md(
+                img_path=png_fpath,
+                latexdet_model=latexdet_model,
+                textdet_model=textdet_model,
+                textrec_model=textrec_model,
+                latexrec_model=latexrec_model,
+                tokenizer=tokenizer,
+                device=str2device(device),
+                num_beams=num_beams,
+            )
+
+        st.success("Completed!", icon="✅")
+        # st.markdown(SUCCESS_GIF_HTML, unsafe_allow_html=True)
+        # st.text_area("Predicted LaTeX", pred, height=150)
+        if inf_mode == "Formula recognition":
+            st.code(pred, language="latex")
+        elif inf_mode == "Paragraph recognition":
+            st.code(pred, language="markdown")
+        else:
+            raise ValueError(f"Invalid inference mode: {inf_mode}")
+
+        if inf_mode == "Formula recognition":
+            st.latex(pred)
+        elif inf_mode == "Paragraph recognition":
+            mixed_res = re.split(r"(\$\$.*?\$\$)", pred, flags=re.DOTALL)
+            for text in mixed_res:
+                if text.startswith("$$") and text.endswith("$$"):
+                    st.latex(text.strip("$$"))
+                else:
+                    st.markdown(text)
+
+        st.write("")
+        st.write("")
+
+        with st.expander(":star2: :gray[Tips for better results]"):
+            st.markdown("""
+                * :mag_right: Use a clear and high-resolution image.
+                * :scissors: Crop images as accurately as possible.
+                * :jigsaw: Split large multi line formulas into smaller ones.
+                * :page_facing_up: Use images with **white background and black text** as much as possible.
+                * :book: Use a font with good readability.
+            """)
+        shutil.rmtree(temp_dir)
+
+    paste_result.image_data = None
+
+# ====== </page> ======

texteller/cli/commands/web/style.py

@@ -0,0 +1,55 @@
+from texteller.utils import lines_dedent
+
+
+HEADER_HTML = lines_dedent("""
+    <h1 style="color: black; text-align: center;">
+        <img src="https://raw.githubusercontent.com/OleehyO/TexTeller/main/assets/fire.svg" width="100">
+        𝚃𝚎𝚡𝚃𝚎𝚕𝚕𝚎𝚛
+        <img src="https://raw.githubusercontent.com/OleehyO/TexTeller/main/assets/fire.svg" width="100">
+    </h1>
+    """)
+
+SUCCESS_GIF_HTML = lines_dedent("""
+    <h1 style="color: black; text-align: center;">
+        <img src="https://slackmojis.com/emojis/90621-clapclap-e/download" width="50">
+        <img src="https://slackmojis.com/emojis/90621-clapclap-e/download" width="50">
+        <img src="https://slackmojis.com/emojis/90621-clapclap-e/download" width="50">
+    </h1>
+    """)
+
+FAIL_GIF_HTML = lines_dedent("""
+    <h1 style="color: black; text-align: center;">
+        <img src="https://slackmojis.com/emojis/51439-allthethings_intensifies/download">
+        <img src="https://slackmojis.com/emojis/51439-allthethings_intensifies/download">
+        <img src="https://slackmojis.com/emojis/51439-allthethings_intensifies/download">
+    </h1>
+    """)
+
+IMAGE_EMBED_HTML = lines_dedent("""
+    <style>
+    .centered-container {{
+        text-align: center;
+    }}
+    .centered-image {{
+        display: block;
+        margin-left: auto;
+        margin-right: auto;
+        max-height: 350px;
+        max-width: 100%;
+    }}
+    </style>
+    <div class="centered-container">
+        <img src="data:image/png;base64,{img_base64}" class="centered-image" alt="Input image">
+    </div>
+    """)
+
+IMAGE_INFO_HTML = lines_dedent("""
+    <style>
+    .centered-container {{
+        text-align: center;
+    }}
+    </style>
+    <div class="centered-container">
+        <p style="color:gray;">Input image ({img_height}✖️{img_width})</p>
+    </div>
+    """)

texteller/client_demo.py

@@ -1,12 +0,0 @@
-import requests
-
-rec_server_url = "http://127.0.0.1:8000/frec"
-det_server_url = "http://127.0.0.1:8000/fdet"
-
-img_path = "/your/image/path/"
-with open(img_path, 'rb') as img:
-    files = {'img': img}
-    response = requests.post(rec_server_url, files=files)
-    # response = requests.post(det_server_url, files=files)
-
-print(response.text)

texteller/constants.py

@@ -21,3 +21,13 @@ MIN_RESIZE_RATIO = 0.75
 # Minimum height and width for input image for TexTeller
 MIN_HEIGHT = 12
 MIN_WIDTH = 30
+
+LATEX_DET_MODEL_URL = (
+    "https://huggingface.co/TonyLee1256/texteller_det/resolve/main/rtdetr_r50vd_6x_coco.onnx"
+)
+TEXT_REC_MODEL_URL = (
+    "https://huggingface.co/OleehyO/paddleocrv4.onnx/resolve/main/ch_PP-OCRv4_server_rec.onnx"
+)
+TEXT_DET_MODEL_URL = (
+    "https://huggingface.co/OleehyO/paddleocrv4.onnx/resolve/main/ch_PP-OCRv4_det.onnx"
+)

texteller/globals.py

@@ -0,0 +1,41 @@
+import logging
+from pathlib import Path
+
+
+class Globals:
+    """
+    Singleton class for managing global variables with predefined and dynamic attributes.
+
+    Usage Example:
+        >>> # 1. Access predefined variable (with default value)
+        >>> print(Globals().repo_name)  # Output: OleehyO/TexTeller
+
+        >>> # 2. Modify predefined variable
+        >>> Globals().repo_name = "NewRepo/NewProject"
+        >>> print(Globals().repo_name)  # Output: NewRepo/NewProject
+
+        >>> # 3. Dynamically add new variable
+        >>> Globals().new_var = "hello"
+        >>> print(Globals().new_var)  # Output: hello
+
+        >>> # 4. View all variables
+        >>> print(Globals())  # Output: <Globals: {'repo_name': ..., 'new_var': ...}>
+    """
+
+    _instance = None
+    _initialized = False
+
+    def __new__(cls):
+        if cls._instance is None:
+            cls._instance = super().__new__(cls)
+        return cls._instance
+
+    def __init__(self):
+        if not self._initialized:
+            self.repo_name = "OleehyO/TexTeller"
+            self.logging_level = logging.INFO
+            self.cache_dir = Path("~/.cache/texteller").expanduser().resolve()
+            self.__class__._initialized = True
+
+    def __repr__(self):
+        return f"<Globals: {self.__dict__}>"

texteller/infer_det.py

@@ -1,96 +0,0 @@
-import os
-import argparse
-import glob
-import subprocess
-
-import onnxruntime
-from pathlib import Path
-
-from models.det_model.inference import PredictConfig, predict_image
-
-
-parser = argparse.ArgumentParser(description=__doc__)
-parser.add_argument(
-    "--infer_cfg", type=str, help="infer_cfg.yml", default="./models/det_model/model/infer_cfg.yml"
-)
-parser.add_argument(
-    '--onnx_file',
-    type=str,
-    help="onnx model file path",
-    default="./models/det_model/model/rtdetr_r50vd_6x_coco.onnx",
-)
-parser.add_argument("--image_dir", type=str, default='./testImgs')
-parser.add_argument("--image_file", type=str)
-parser.add_argument("--imgsave_dir", type=str, default="./detect_results")
-parser.add_argument(
-    '--use_gpu', action='store_true', help='Whether to use GPU for inference', default=True
-)
-
-
-def get_test_images(infer_dir, infer_img):
-    """
-    Get image path list in TEST mode
-    """
-    assert (
-        infer_img is not None or infer_dir is not None
-    ), "--image_file or --image_dir should be set"
-    assert infer_img is None or os.path.isfile(infer_img), "{} is not a file".format(infer_img)
-    assert infer_dir is None or os.path.isdir(infer_dir), "{} is not a directory".format(infer_dir)
-
-    # infer_img has a higher priority
-    if infer_img and os.path.isfile(infer_img):
-        return [infer_img]
-
-    images = set()
-    infer_dir = os.path.abspath(infer_dir)
-    assert os.path.isdir(infer_dir), "infer_dir {} is not a directory".format(infer_dir)
-    exts = ['jpg', 'jpeg', 'png', 'bmp']
-    exts += [ext.upper() for ext in exts]
-    for ext in exts:
-        images.update(glob.glob('{}/*.{}'.format(infer_dir, ext)))
-    images = list(images)
-
-    assert len(images) > 0, "no image found in {}".format(infer_dir)
-    print("Found {} inference images in total.".format(len(images)))
-
-    return images
-
-
-def download_file(url, filename):
-    print(f"Downloading {filename}...")
-    subprocess.run(["wget", "-q", "--show-progress", "-O", filename, url], check=True)
-    print("Download complete.")
-
-
-if __name__ == '__main__':
-    cur_path = os.getcwd()
-    script_dirpath = Path(__file__).resolve().parent
-    os.chdir(script_dirpath)
-
-    FLAGS = parser.parse_args()
-
-    if not os.path.exists(FLAGS.infer_cfg):
-        infer_cfg_url = "https://huggingface.co/TonyLee1256/texteller_det/resolve/main/infer_cfg.yml?download=true"
-        download_file(infer_cfg_url, FLAGS.infer_cfg)
-
-    if not os.path.exists(FLAGS.onnx_file):
-        onnx_file_url = "https://huggingface.co/TonyLee1256/texteller_det/resolve/main/rtdetr_r50vd_6x_coco.onnx?download=true"
-        download_file(onnx_file_url, FLAGS.onnx_file)
-
-    # load image list
-    img_list = get_test_images(FLAGS.image_dir, FLAGS.image_file)
-
-    if FLAGS.use_gpu:
-        predictor = onnxruntime.InferenceSession(
-            FLAGS.onnx_file, providers=['CUDAExecutionProvider']
-        )
-    else:
-        predictor = onnxruntime.InferenceSession(
-            FLAGS.onnx_file, providers=['CPUExecutionProvider']
-        )
-    # load infer config
-    infer_config = PredictConfig(FLAGS.infer_cfg)
-
-    predict_image(FLAGS.imgsave_dir, infer_config, predictor, img_list)
-
-    os.chdir(cur_path)

texteller/inference.py

@@ -1,81 +0,0 @@
-import os
-import argparse
-import cv2 as cv
-
-from pathlib import Path
-from onnxruntime import InferenceSession
-from models.thrid_party.paddleocr.infer import predict_det, predict_rec
-from models.thrid_party.paddleocr.infer import utility
-
-from models.utils import mix_inference
-from models.ocr_model.utils.to_katex import to_katex
-from models.ocr_model.utils.inference import inference as latex_inference
-
-from models.ocr_model.model.TexTeller import TexTeller
-from models.det_model.inference import PredictConfig
-
-
-if __name__ == '__main__':
-    os.chdir(Path(__file__).resolve().parent)
-    parser = argparse.ArgumentParser()
-    parser.add_argument('-img', type=str, required=True, help='path to the input image')
-    parser.add_argument(
-        '--inference-mode',
-        type=str,
-        default='cpu',
-        help='Inference mode, select one of cpu, cuda, or mps',
-    )
-    parser.add_argument(
-        '--num-beam', type=int, default=1, help='number of beam search for decoding'
-    )
-    parser.add_argument('-mix', action='store_true', help='use mix mode')
-
-    args = parser.parse_args()
-
-    # You can use your own checkpoint and tokenizer path.
-    print('Loading model and tokenizer...')
-    latex_rec_model = TexTeller.from_pretrained()
-    tokenizer = TexTeller.get_tokenizer()
-    print('Model and tokenizer loaded.')
-
-    img_path = args.img
-    img = cv.imread(img_path)
-    print('Inference...')
-    if not args.mix:
-        res = latex_inference(latex_rec_model, tokenizer, [img], args.inference_mode, args.num_beam)
-        res = to_katex(res[0])
-        print(res)
-    else:
-        infer_config = PredictConfig("./models/det_model/model/infer_cfg.yml")
-        latex_det_model = InferenceSession("./models/det_model/model/rtdetr_r50vd_6x_coco.onnx")
-
-        use_gpu = args.inference_mode == 'cuda'
-        SIZE_LIMIT = 20 * 1024 * 1024
-        det_model_dir = "./models/thrid_party/paddleocr/checkpoints/det/default_model.onnx"
-        rec_model_dir = "./models/thrid_party/paddleocr/checkpoints/rec/default_model.onnx"
-        # The CPU inference of the detection model will be faster than the GPU inference (in onnxruntime)
-        det_use_gpu = False
-        rec_use_gpu = use_gpu and not (os.path.getsize(rec_model_dir) < SIZE_LIMIT)
-
-        paddleocr_args = utility.parse_args()
-        paddleocr_args.use_onnx = True
-        paddleocr_args.det_model_dir = det_model_dir
-        paddleocr_args.rec_model_dir = rec_model_dir
-
-        paddleocr_args.use_gpu = det_use_gpu
-        detector = predict_det.TextDetector(paddleocr_args)
-        paddleocr_args.use_gpu = rec_use_gpu
-        recognizer = predict_rec.TextRecognizer(paddleocr_args)
-
-        lang_ocr_models = [detector, recognizer]
-        latex_rec_models = [latex_rec_model, tokenizer]
-        res = mix_inference(
-            img_path,
-            infer_config,
-            latex_det_model,
-            lang_ocr_models,
-            latex_rec_models,
-            args.inference_mode,
-            args.num_beam,
-        )
-        print(res)

texteller/logger.py

@@ -0,0 +1,96 @@
+import inspect
+import logging
+import os
+from datetime import datetime
+from logging import Logger
+
+import colorama
+from colorama import Fore, Style
+
+from texteller.globals import Globals
+
+# Initialize colorama for colored console output
+colorama.init(autoreset=True)
+
+
+TEMPLATE = "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+
+
+class ColoredFormatter(logging.Formatter):
+    """Custom formatter to add colors based on log level."""
+
+    FORMATS = {  # noqa: E501
+        logging.DEBUG: Fore.LIGHTBLACK_EX + TEMPLATE + Style.RESET_ALL,
+        logging.INFO: Fore.WHITE + TEMPLATE + Style.RESET_ALL,
+        logging.WARNING: Fore.YELLOW + TEMPLATE + Style.RESET_ALL,
+        logging.ERROR: Fore.RED + TEMPLATE + Style.RESET_ALL,
+        logging.CRITICAL: Fore.RED + Style.BRIGHT + TEMPLATE + Style.RESET_ALL,
+    }  # noqa: E501
+
+    def format(self, record):
+        log_fmt = self.FORMATS.get(record.levelno, self.FORMATS[logging.INFO])
+        formatter = logging.Formatter(log_fmt, datefmt="%Y-%m-%d %H:%M:%S")
+        return formatter.format(record)
+
+
+def get_logger(name: str | None = None, use_file_handler: bool = False) -> Logger:
+    """
+    Creates and configures a logger with the caller's module name (if provided) or the first two modules.
+    If the module name is too long, it takes the first two modules.
+
+    Args:
+        name (str, optional): Custom logger name. If None, derives from caller's module.
+        use_file_handler (bool, optional): Whether to use a file handler. Defaults to False.
+
+    Returns:
+        Logger: Configured logger with colored console output and file handler.
+    """
+    # If name is not provided, derive it from the caller's module
+    if name is None:
+        # Get the caller's stack frame
+        frame = inspect.stack()[1]
+        module = inspect.getmodule(frame[0])
+        if module and module.__name__:
+            module_name = module.__name__
+            # Split module name and take first two components if too long
+            parts = module_name.split(".")
+            if len(parts) > 2:
+                name = ".".join(parts[:2])
+            else:
+                name = module_name
+        else:
+            name = "root"
+
+    # Create or get logger
+    logger = logging.getLogger(name)
+
+    # Prevent duplicate handlers
+    if logger.handlers:
+        return logger
+
+    # Set logger level
+    logger.setLevel(Globals().logging_level)
+
+    # Create console handler with colored formatter
+    console_handler = logging.StreamHandler()
+    console_handler.setLevel(Globals().logging_level)
+    console_formatter = ColoredFormatter()
+    console_handler.setFormatter(console_formatter)
+    logger.addHandler(console_handler)
+
+    # Create file handler
+    if use_file_handler:
+        log_dir = "logs"
+        os.makedirs(log_dir, exist_ok=True)
+        log_file = os.path.join(log_dir, f"{datetime.now().strftime('%Y%m%d')}.log")
+        file_handler = logging.FileHandler(log_file)
+        file_handler.setLevel(Globals().logging_level)
+        # File formatter (no colors)
+        file_formatter = logging.Formatter(TEMPLATE, datefmt="%Y-%m-%d %H:%M:%S")
+        file_handler.setFormatter(file_formatter)
+        logger.addHandler(file_handler)
+
+    # Prevent logger from propagating to root logger
+    logger.propagate = False
+
+    return logger

texteller/models/__init__.py

@@ -0,0 +1,3 @@
+from .texteller import TexTeller
+
+__all__ = ['TexTeller']

texteller/models/det_model/inference.py

@@ -1,226 +0,0 @@
-import os
-import time
-import yaml
-import numpy as np
-import cv2
-
-from tqdm import tqdm
-from typing import List
-from .preprocess import Compose
-from .Bbox import Bbox
-
-
-# Global dictionary
-SUPPORT_MODELS = {
-    'YOLO',
-    'PPYOLOE',
-    'RCNN',
-    'SSD',
-    'Face',
-    'FCOS',
-    'SOLOv2',
-    'TTFNet',
-    'S2ANet',
-    'JDE',
-    'FairMOT',
-    'DeepSORT',
-    'GFL',
-    'PicoDet',
-    'CenterNet',
-    'TOOD',
-    'RetinaNet',
-    'StrongBaseline',
-    'STGCN',
-    'YOLOX',
-    'HRNet',
-    'DETR',
-}
-
-
-class PredictConfig(object):
-    """set config of preprocess, postprocess and visualize
-    Args:
-        infer_config (str): path of infer_cfg.yml
-    """
-
-    def __init__(self, infer_config):
-        # parsing Yaml config for Preprocess
-        with open(infer_config) as f:
-            yml_conf = yaml.safe_load(f)
-        self.check_model(yml_conf)
-        self.arch = yml_conf['arch']
-        self.preprocess_infos = yml_conf['Preprocess']
-        self.min_subgraph_size = yml_conf['min_subgraph_size']
-        self.label_list = yml_conf['label_list']
-        self.use_dynamic_shape = yml_conf['use_dynamic_shape']
-        self.draw_threshold = yml_conf.get("draw_threshold", 0.5)
-        self.mask = yml_conf.get("mask", False)
-        self.tracker = yml_conf.get("tracker", None)
-        self.nms = yml_conf.get("NMS", None)
-        self.fpn_stride = yml_conf.get("fpn_stride", None)
-
-        color_pool = [(0, 255, 0), (255, 0, 0), (0, 0, 255), (255, 255, 0), (0, 255, 255)]
-        self.colors = {
-            label: color_pool[i % len(color_pool)] for i, label in enumerate(self.label_list)
-        }
-
-        if self.arch == 'RCNN' and yml_conf.get('export_onnx', False):
-            print('The RCNN export model is used for ONNX and it only supports batch_size = 1')
-        self.print_config()
-
-    def check_model(self, yml_conf):
-        """
-        Raises:
-            ValueError: loaded model not in supported model type
-        """
-        for support_model in SUPPORT_MODELS:
-            if support_model in yml_conf['arch']:
-                return True
-        raise ValueError("Unsupported arch: {}, expect {}".format(yml_conf['arch'], SUPPORT_MODELS))
-
-    def print_config(self):
-        print('-----------  Model Configuration -----------')
-        print('%s: %s' % ('Model Arch', self.arch))
-        print('%s: ' % ('Transform Order'))
-        for op_info in self.preprocess_infos:
-            print('--%s: %s' % ('transform op', op_info['type']))
-        print('--------------------------------------------')
-
-
-def draw_bbox(image, outputs, infer_config):
-    for output in outputs:
-        cls_id, score, xmin, ymin, xmax, ymax = output
-        if score > infer_config.draw_threshold:
-            label = infer_config.label_list[int(cls_id)]
-            color = infer_config.colors[label]
-            cv2.rectangle(image, (int(xmin), int(ymin)), (int(xmax), int(ymax)), color, 2)
-            cv2.putText(
-                image,
-                "{}: {:.2f}".format(label, score),
-                (int(xmin), int(ymin - 5)),
-                cv2.FONT_HERSHEY_SIMPLEX,
-                0.5,
-                color,
-                2,
-            )
-    return image
-
-
-def predict_image(imgsave_dir, infer_config, predictor, img_list):
-    # load preprocess transforms
-    transforms = Compose(infer_config.preprocess_infos)
-    errImgList = []
-
-    # Check and create subimg_save_dir if not exist
-    subimg_save_dir = os.path.join(imgsave_dir, 'subimages')
-    os.makedirs(subimg_save_dir, exist_ok=True)
-
-    first_image_skipped = False
-    total_time = 0
-    num_images = 0
-    # predict image
-    for img_path in tqdm(img_list):
-        img = cv2.imread(img_path)
-        if img is None:
-            print(f"Warning: Could not read image {img_path}. Skipping...")
-            errImgList.append(img_path)
-            continue
-
-        inputs = transforms(img_path)
-        inputs_name = [var.name for var in predictor.get_inputs()]
-        inputs = {k: inputs[k][None,] for k in inputs_name}
-
-        # Start timing
-        start_time = time.time()
-
-        outputs = predictor.run(output_names=None, input_feed=inputs)
-
-        # Stop timing
-        end_time = time.time()
-        inference_time = end_time - start_time
-        if not first_image_skipped:
-            first_image_skipped = True
-        else:
-            total_time += inference_time
-            num_images += 1
-        print(
-            f"ONNXRuntime predict time for {os.path.basename(img_path)}: {inference_time:.4f} seconds"
-        )
-
-        print("ONNXRuntime predict: ")
-        if infer_config.arch in ["HRNet"]:
-            print(np.array(outputs[0]))
-        else:
-            bboxes = np.array(outputs[0])
-            for bbox in bboxes:
-                if bbox[0] > -1 and bbox[1] > infer_config.draw_threshold:
-                    print(f"{int(bbox[0])} {bbox[1]} " f"{bbox[2]} {bbox[3]} {bbox[4]} {bbox[5]}")
-
-        # Save the subimages (crop from the original image)
-        subimg_counter = 1
-        for output in np.array(outputs[0]):
-            cls_id, score, xmin, ymin, xmax, ymax = output
-            if score > infer_config.draw_threshold:
-                label = infer_config.label_list[int(cls_id)]
-                subimg = img[int(max(ymin, 0)) : int(ymax), int(max(xmin, 0)) : int(xmax)]
-                if len(subimg) == 0:
-                    continue
-
-                subimg_filename = f"{os.path.splitext(os.path.basename(img_path))[0]}_{label}_{xmin:.2f}_{ymin:.2f}_{xmax:.2f}_{ymax:.2f}.jpg"
-                subimg_path = os.path.join(subimg_save_dir, subimg_filename)
-                cv2.imwrite(subimg_path, subimg)
-                subimg_counter += 1
-
-        # Draw bounding boxes and save the image with bounding boxes
-        img_with_mask = img.copy()
-        for output in np.array(outputs[0]):
-            cls_id, score, xmin, ymin, xmax, ymax = output
-            if score > infer_config.draw_threshold:
-                cv2.rectangle(
-                    img_with_mask,
-                    (int(xmin), int(ymin)),
-                    (int(xmax), int(ymax)),
-                    (255, 255, 255),
-                    -1,
-                )  # 盖白
-
-        img_with_bbox = draw_bbox(img, np.array(outputs[0]), infer_config)
-
-        output_dir = imgsave_dir
-        os.makedirs(output_dir, exist_ok=True)
-        draw_box_dir = os.path.join(output_dir, 'draw_box')
-        mask_white_dir = os.path.join(output_dir, 'mask_white')
-        os.makedirs(draw_box_dir, exist_ok=True)
-        os.makedirs(mask_white_dir, exist_ok=True)
-
-        output_file_mask = os.path.join(mask_white_dir, os.path.basename(img_path))
-        output_file_bbox = os.path.join(draw_box_dir, os.path.basename(img_path))
-        cv2.imwrite(output_file_mask, img_with_mask)
-        cv2.imwrite(output_file_bbox, img_with_bbox)
-
-    avg_time_per_image = total_time / num_images if num_images > 0 else 0
-    print(f"Total inference time for {num_images} images: {total_time:.4f} seconds")
-    print(f"Average time per image: {avg_time_per_image:.4f} seconds")
-    print("ErrorImgs:")
-    print(errImgList)
-
-
-def predict(img_path: str, predictor, infer_config) -> List[Bbox]:
-    transforms = Compose(infer_config.preprocess_infos)
-    inputs = transforms(img_path)
-    inputs_name = [var.name for var in predictor.get_inputs()]
-    inputs = {k: inputs[k][None,] for k in inputs_name}
-
-    outputs = predictor.run(output_names=None, input_feed=inputs)[0]
-    res = []
-    for output in outputs:
-        cls_name = infer_config.label_list[int(output[0])]
-        score = output[1]
-        xmin = int(max(output[2], 0))
-        ymin = int(max(output[3], 0))
-        xmax = int(output[4])
-        ymax = int(output[5])
-        if score > infer_config.draw_threshold:
-            res.append(Bbox(xmin, ymin, ymax - ymin, xmax - xmin, cls_name, score))
-
-    return res

texteller/models/det_model/model/infer_cfg.yml

@@ -1,27 +0,0 @@
-mode: paddle
-draw_threshold: 0.5
-metric: COCO
-use_dynamic_shape: false
-arch: DETR
-min_subgraph_size: 3
-Preprocess:
-- interp: 2
-  keep_ratio: false
-  target_size:
-  - 1600
-  - 1600
-  type: Resize
-- mean:
-  - 0.0
-  - 0.0
-  - 0.0
-  norm_type: none
-  std:
-  - 1.0
-  - 1.0
-  - 1.0
-  type: NormalizeImage
-- type: Permute
-label_list:
-- isolated
-- embedding

texteller/models/det_model/preprocess.py

@@ -1,485 +0,0 @@
-import numpy as np
-import cv2
-import copy
-
-
-def decode_image(img_path):
-    if isinstance(img_path, str):
-        with open(img_path, 'rb') as f:
-            im_read = f.read()
-        data = np.frombuffer(im_read, dtype='uint8')
-    else:
-        assert isinstance(img_path, np.ndarray)
-        data = img_path
-
-    im = cv2.imdecode(data, 1)  # BGR mode, but need RGB mode
-    im = cv2.cvtColor(im, cv2.COLOR_BGR2RGB)
-    img_info = {
-        "im_shape": np.array(im.shape[:2], dtype=np.float32),
-        "scale_factor": np.array([1.0, 1.0], dtype=np.float32),
-    }
-    return im, img_info
-
-
-class Resize(object):
-    """resize image by target_size and max_size
-    Args:
-        target_size (int): the target size of image
-        keep_ratio (bool): whether keep_ratio or not, default true
-        interp (int): method of resize
-    """
-
-    def __init__(self, target_size, keep_ratio=True, interp=cv2.INTER_LINEAR):
-        if isinstance(target_size, int):
-            target_size = [target_size, target_size]
-        self.target_size = target_size
-        self.keep_ratio = keep_ratio
-        self.interp = interp
-
-    def __call__(self, im, im_info):
-        """
-        Args:
-            im (np.ndarray): image (np.ndarray)
-            im_info (dict): info of image
-        Returns:
-            im (np.ndarray):  processed image (np.ndarray)
-            im_info (dict): info of processed image
-        """
-        assert len(self.target_size) == 2
-        assert self.target_size[0] > 0 and self.target_size[1] > 0
-        im_channel = im.shape[2]
-        im_scale_y, im_scale_x = self.generate_scale(im)
-        im = cv2.resize(im, None, None, fx=im_scale_x, fy=im_scale_y, interpolation=self.interp)
-        im_info['im_shape'] = np.array(im.shape[:2]).astype('float32')
-        im_info['scale_factor'] = np.array([im_scale_y, im_scale_x]).astype('float32')
-        return im, im_info
-
-    def generate_scale(self, im):
-        """
-        Args:
-            im (np.ndarray): image (np.ndarray)
-        Returns:
-            im_scale_x: the resize ratio of X
-            im_scale_y: the resize ratio of Y
-        """
-        origin_shape = im.shape[:2]
-        im_c = im.shape[2]
-        if self.keep_ratio:
-            im_size_min = np.min(origin_shape)
-            im_size_max = np.max(origin_shape)
-            target_size_min = np.min(self.target_size)
-            target_size_max = np.max(self.target_size)
-            im_scale = float(target_size_min) / float(im_size_min)
-            if np.round(im_scale * im_size_max) > target_size_max:
-                im_scale = float(target_size_max) / float(im_size_max)
-            im_scale_x = im_scale
-            im_scale_y = im_scale
-        else:
-            resize_h, resize_w = self.target_size
-            im_scale_y = resize_h / float(origin_shape[0])
-            im_scale_x = resize_w / float(origin_shape[1])
-        return im_scale_y, im_scale_x
-
-
-class NormalizeImage(object):
-    """normalize image
-    Args:
-        mean (list): im - mean
-        std (list): im / std
-        is_scale (bool): whether need im / 255
-        norm_type (str): type in ['mean_std', 'none']
-    """
-
-    def __init__(self, mean, std, is_scale=True, norm_type='mean_std'):
-        self.mean = mean
-        self.std = std
-        self.is_scale = is_scale
-        self.norm_type = norm_type
-
-    def __call__(self, im, im_info):
-        """
-        Args:
-            im (np.ndarray): image (np.ndarray)
-            im_info (dict): info of image
-        Returns:
-            im (np.ndarray):  processed image (np.ndarray)
-            im_info (dict): info of processed image
-        """
-        im = im.astype(np.float32, copy=False)
-        if self.is_scale:
-            scale = 1.0 / 255.0
-            im *= scale
-
-        if self.norm_type == 'mean_std':
-            mean = np.array(self.mean)[np.newaxis, np.newaxis, :]
-            std = np.array(self.std)[np.newaxis, np.newaxis, :]
-            im -= mean
-            im /= std
-        return im, im_info
-
-
-class Permute(object):
-    """permute image
-    Args:
-        to_bgr (bool): whether convert RGB to BGR
-        channel_first (bool): whether convert HWC to CHW
-    """
-
-    def __init__(
-        self,
-    ):
-        super(Permute, self).__init__()
-
-    def __call__(self, im, im_info):
-        """
-        Args:
-            im (np.ndarray): image (np.ndarray)
-            im_info (dict): info of image
-        Returns:
-            im (np.ndarray):  processed image (np.ndarray)
-            im_info (dict): info of processed image
-        """
-        im = im.transpose((2, 0, 1)).copy()
-        return im, im_info
-
-
-class PadStride(object):
-    """padding image for model with FPN, instead PadBatch(pad_to_stride) in original config
-    Args:
-        stride (bool): model with FPN need image shape % stride == 0
-    """
-
-    def __init__(self, stride=0):
-        self.coarsest_stride = stride
-
-    def __call__(self, im, im_info):
-        """
-        Args:
-            im (np.ndarray): image (np.ndarray)
-            im_info (dict): info of image
-        Returns:
-            im (np.ndarray):  processed image (np.ndarray)
-            im_info (dict): info of processed image
-        """
-        coarsest_stride = self.coarsest_stride
-        if coarsest_stride <= 0:
-            return im, im_info
-        im_c, im_h, im_w = im.shape
-        pad_h = int(np.ceil(float(im_h) / coarsest_stride) * coarsest_stride)
-        pad_w = int(np.ceil(float(im_w) / coarsest_stride) * coarsest_stride)
-        padding_im = np.zeros((im_c, pad_h, pad_w), dtype=np.float32)
-        padding_im[:, :im_h, :im_w] = im
-        return padding_im, im_info
-
-
-class LetterBoxResize(object):
-    def __init__(self, target_size):
-        """
-        Resize image to target size, convert normalized xywh to pixel xyxy
-        format ([x_center, y_center, width, height] -> [x0, y0, x1, y1]).
-        Args:
-            target_size (int|list): image target size.
-        """
-        super(LetterBoxResize, self).__init__()
-        if isinstance(target_size, int):
-            target_size = [target_size, target_size]
-        self.target_size = target_size
-
-    def letterbox(self, img, height, width, color=(127.5, 127.5, 127.5)):
-        # letterbox: resize a rectangular image to a padded rectangular
-        shape = img.shape[:2]  # [height, width]
-        ratio_h = float(height) / shape[0]
-        ratio_w = float(width) / shape[1]
-        ratio = min(ratio_h, ratio_w)
-        new_shape = (round(shape[1] * ratio), round(shape[0] * ratio))  # [width, height]
-        padw = (width - new_shape[0]) / 2
-        padh = (height - new_shape[1]) / 2
-        top, bottom = round(padh - 0.1), round(padh + 0.1)
-        left, right = round(padw - 0.1), round(padw + 0.1)
-
-        img = cv2.resize(img, new_shape, interpolation=cv2.INTER_AREA)  # resized, no border
-        img = cv2.copyMakeBorder(
-            img, top, bottom, left, right, cv2.BORDER_CONSTANT, value=color
-        )  # padded rectangular
-        return img, ratio, padw, padh
-
-    def __call__(self, im, im_info):
-        """
-        Args:
-            im (np.ndarray): image (np.ndarray)
-            im_info (dict): info of image
-        Returns:
-            im (np.ndarray):  processed image (np.ndarray)
-            im_info (dict): info of processed image
-        """
-        assert len(self.target_size) == 2
-        assert self.target_size[0] > 0 and self.target_size[1] > 0
-        height, width = self.target_size
-        h, w = im.shape[:2]
-        im, ratio, padw, padh = self.letterbox(im, height=height, width=width)
-
-        new_shape = [round(h * ratio), round(w * ratio)]
-        im_info['im_shape'] = np.array(new_shape, dtype=np.float32)
-        im_info['scale_factor'] = np.array([ratio, ratio], dtype=np.float32)
-        return im, im_info
-
-
-class Pad(object):
-    def __init__(self, size, fill_value=[114.0, 114.0, 114.0]):
-        """
-        Pad image to a specified size.
-        Args:
-            size (list[int]): image target size
-            fill_value (list[float]): rgb value of pad area, default (114.0, 114.0, 114.0)
-        """
-        super(Pad, self).__init__()
-        if isinstance(size, int):
-            size = [size, size]
-        self.size = size
-        self.fill_value = fill_value
-
-    def __call__(self, im, im_info):
-        im_h, im_w = im.shape[:2]
-        h, w = self.size
-        if h == im_h and w == im_w:
-            im = im.astype(np.float32)
-            return im, im_info
-
-        canvas = np.ones((h, w, 3), dtype=np.float32)
-        canvas *= np.array(self.fill_value, dtype=np.float32)
-        canvas[0:im_h, 0:im_w, :] = im.astype(np.float32)
-        im = canvas
-        return im, im_info
-
-
-def rotate_point(pt, angle_rad):
-    """Rotate a point by an angle.
-
-    Args:
-        pt (list[float]): 2 dimensional point to be rotated
-        angle_rad (float): rotation angle by radian
-
-    Returns:
-        list[float]: Rotated point.
-    """
-    assert len(pt) == 2
-    sn, cs = np.sin(angle_rad), np.cos(angle_rad)
-    new_x = pt[0] * cs - pt[1] * sn
-    new_y = pt[0] * sn + pt[1] * cs
-    rotated_pt = [new_x, new_y]
-
-    return rotated_pt
-
-
-def _get_3rd_point(a, b):
-    """To calculate the affine matrix, three pairs of points are required. This
-    function is used to get the 3rd point, given 2D points a & b.
-
-    The 3rd point is defined by rotating vector `a - b` by 90 degrees
-    anticlockwise, using b as the rotation center.
-
-    Args:
-        a (np.ndarray): point(x,y)
-        b (np.ndarray): point(x,y)
-
-    Returns:
-        np.ndarray: The 3rd point.
-    """
-    assert len(a) == 2
-    assert len(b) == 2
-    direction = a - b
-    third_pt = b + np.array([-direction[1], direction[0]], dtype=np.float32)
-
-    return third_pt
-
-
-def get_affine_transform(center, input_size, rot, output_size, shift=(0.0, 0.0), inv=False):
-    """Get the affine transform matrix, given the center/scale/rot/output_size.
-
-    Args:
-        center (np.ndarray[2, ]): Center of the bounding box (x, y).
-        scale (np.ndarray[2, ]): Scale of the bounding box
-            wrt [width, height].
-        rot (float): Rotation angle (degree).
-        output_size (np.ndarray[2, ]): Size of the destination heatmaps.
-        shift (0-100%): Shift translation ratio wrt the width/height.
-            Default (0., 0.).
-        inv (bool): Option to inverse the affine transform direction.
-            (inv=False: src->dst or inv=True: dst->src)
-
-    Returns:
-        np.ndarray: The transform matrix.
-    """
-    assert len(center) == 2
-    assert len(output_size) == 2
-    assert len(shift) == 2
-    if not isinstance(input_size, (np.ndarray, list)):
-        input_size = np.array([input_size, input_size], dtype=np.float32)
-    scale_tmp = input_size
-
-    shift = np.array(shift)
-    src_w = scale_tmp[0]
-    dst_w = output_size[0]
-    dst_h = output_size[1]
-
-    rot_rad = np.pi * rot / 180
-    src_dir = rotate_point([0.0, src_w * -0.5], rot_rad)
-    dst_dir = np.array([0.0, dst_w * -0.5])
-
-    src = np.zeros((3, 2), dtype=np.float32)
-    src[0, :] = center + scale_tmp * shift
-    src[1, :] = center + src_dir + scale_tmp * shift
-    src[2, :] = _get_3rd_point(src[0, :], src[1, :])
-
-    dst = np.zeros((3, 2), dtype=np.float32)
-    dst[0, :] = [dst_w * 0.5, dst_h * 0.5]
-    dst[1, :] = np.array([dst_w * 0.5, dst_h * 0.5]) + dst_dir
-    dst[2, :] = _get_3rd_point(dst[0, :], dst[1, :])
-
-    if inv:
-        trans = cv2.getAffineTransform(np.float32(dst), np.float32(src))
-    else:
-        trans = cv2.getAffineTransform(np.float32(src), np.float32(dst))
-
-    return trans
-
-
-class WarpAffine(object):
-    """Warp affine the image"""
-
-    def __init__(self, keep_res=False, pad=31, input_h=512, input_w=512, scale=0.4, shift=0.1):
-        self.keep_res = keep_res
-        self.pad = pad
-        self.input_h = input_h
-        self.input_w = input_w
-        self.scale = scale
-        self.shift = shift
-
-    def __call__(self, im, im_info):
-        """
-        Args:
-            im (np.ndarray): image (np.ndarray)
-            im_info (dict): info of image
-        Returns:
-            im (np.ndarray):  processed image (np.ndarray)
-            im_info (dict): info of processed image
-        """
-        img = cv2.cvtColor(im, cv2.COLOR_RGB2BGR)
-
-        h, w = img.shape[:2]
-
-        if self.keep_res:
-            input_h = (h | self.pad) + 1
-            input_w = (w | self.pad) + 1
-            s = np.array([input_w, input_h], dtype=np.float32)
-            c = np.array([w // 2, h // 2], dtype=np.float32)
-
-        else:
-            s = max(h, w) * 1.0
-            input_h, input_w = self.input_h, self.input_w
-            c = np.array([w / 2.0, h / 2.0], dtype=np.float32)
-
-        trans_input = get_affine_transform(c, s, 0, [input_w, input_h])
-        img = cv2.resize(img, (w, h))
-        inp = cv2.warpAffine(img, trans_input, (input_w, input_h), flags=cv2.INTER_LINEAR)
-        return inp, im_info
-
-
-# keypoint preprocess
-def get_warp_matrix(theta, size_input, size_dst, size_target):
-    """This code is based on
-        https://github.com/open-mmlab/mmpose/blob/master/mmpose/core/post_processing/post_transforms.py
-
-        Calculate the transformation matrix under the constraint of unbiased.
-    Paper ref: Huang et al. The Devil is in the Details: Delving into Unbiased
-    Data Processing for Human Pose Estimation (CVPR 2020).
-
-    Args:
-        theta (float): Rotation angle in degrees.
-        size_input (np.ndarray): Size of input image [w, h].
-        size_dst (np.ndarray): Size of output image [w, h].
-        size_target (np.ndarray): Size of ROI in input plane [w, h].
-
-    Returns:
-        matrix (np.ndarray): A matrix for transformation.
-    """
-    theta = np.deg2rad(theta)
-    matrix = np.zeros((2, 3), dtype=np.float32)
-    scale_x = size_dst[0] / size_target[0]
-    scale_y = size_dst[1] / size_target[1]
-    matrix[0, 0] = np.cos(theta) * scale_x
-    matrix[0, 1] = -np.sin(theta) * scale_x
-    matrix[0, 2] = scale_x * (
-        -0.5 * size_input[0] * np.cos(theta)
-        + 0.5 * size_input[1] * np.sin(theta)
-        + 0.5 * size_target[0]
-    )
-    matrix[1, 0] = np.sin(theta) * scale_y
-    matrix[1, 1] = np.cos(theta) * scale_y
-    matrix[1, 2] = scale_y * (
-        -0.5 * size_input[0] * np.sin(theta)
-        - 0.5 * size_input[1] * np.cos(theta)
-        + 0.5 * size_target[1]
-    )
-    return matrix
-
-
-class TopDownEvalAffine(object):
-    """apply affine transform to image and coords
-
-    Args:
-        trainsize (list): [w, h], the standard size used to train
-        use_udp (bool): whether to use Unbiased Data Processing.
-        records(dict): the dict contained the image and coords
-
-    Returns:
-        records (dict): contain the image and coords after tranformed
-
-    """
-
-    def __init__(self, trainsize, use_udp=False):
-        self.trainsize = trainsize
-        self.use_udp = use_udp
-
-    def __call__(self, image, im_info):
-        rot = 0
-        imshape = im_info['im_shape'][::-1]
-        center = im_info['center'] if 'center' in im_info else imshape / 2.0
-        scale = im_info['scale'] if 'scale' in im_info else imshape
-        if self.use_udp:
-            trans = get_warp_matrix(
-                rot, center * 2.0, [self.trainsize[0] - 1.0, self.trainsize[1] - 1.0], scale
-            )
-            image = cv2.warpAffine(
-                image,
-                trans,
-                (int(self.trainsize[0]), int(self.trainsize[1])),
-                flags=cv2.INTER_LINEAR,
-            )
-        else:
-            trans = get_affine_transform(center, scale, rot, self.trainsize)
-            image = cv2.warpAffine(
-                image,
-                trans,
-                (int(self.trainsize[0]), int(self.trainsize[1])),
-                flags=cv2.INTER_LINEAR,
-            )
-
-        return image, im_info
-
-
-class Compose:
-    def __init__(self, transforms):
-        self.transforms = []
-        for op_info in transforms:
-            new_op_info = op_info.copy()
-            op_type = new_op_info.pop('type')
-            self.transforms.append(eval(op_type)(**new_op_info))
-
-    def __call__(self, img_path):
-        img, im_info = decode_image(img_path)
-        for t in self.transforms:
-            img, im_info = t(img, im_info)
-        inputs = copy.deepcopy(im_info)
-        inputs['image'] = img
-        return inputs

texteller/models/ocr_model/model/TexTeller.py

@@ -1,43 +0,0 @@
-from pathlib import Path
-
-from ...globals import VOCAB_SIZE, FIXED_IMG_SIZE, IMG_CHANNELS, MAX_TOKEN_SIZE
-
-from transformers import RobertaTokenizerFast, VisionEncoderDecoderModel, VisionEncoderDecoderConfig
-
-
-class TexTeller(VisionEncoderDecoderModel):
-    REPO_NAME = 'OleehyO/TexTeller'
-
-    def __init__(self):
-        config = VisionEncoderDecoderConfig.from_pretrained(
-            Path(__file__).resolve().parent / "config.json"
-        )
-        config.encoder.image_size = FIXED_IMG_SIZE
-        config.encoder.num_channels = IMG_CHANNELS
-        config.decoder.vocab_size = VOCAB_SIZE
-        config.decoder.max_position_embeddings = MAX_TOKEN_SIZE
-
-        super().__init__(config=config)
-
-    @classmethod
-    def from_pretrained(cls, model_path: str = None, use_onnx=False, onnx_provider=None):
-        if model_path is None or model_path == 'default':
-            if not use_onnx:
-                return VisionEncoderDecoderModel.from_pretrained(cls.REPO_NAME)
-            else:
-                from optimum.onnxruntime import ORTModelForVision2Seq
-
-                use_gpu = True if onnx_provider == 'cuda' else False
-                return ORTModelForVision2Seq.from_pretrained(
-                    cls.REPO_NAME,
-                    provider="CUDAExecutionProvider" if use_gpu else "CPUExecutionProvider",
-                )
-        model_path = Path(model_path).resolve()
-        return VisionEncoderDecoderModel.from_pretrained(str(model_path))
-
-    @classmethod
-    def get_tokenizer(cls, tokenizer_path: str = None) -> RobertaTokenizerFast:
-        if tokenizer_path is None or tokenizer_path == 'default':
-            return RobertaTokenizerFast.from_pretrained(cls.REPO_NAME)
-        tokenizer_path = Path(tokenizer_path).resolve()
-        return RobertaTokenizerFast.from_pretrained(str(tokenizer_path))

texteller/models/ocr_model/model/config.json

@@ -1,168 +0,0 @@
-{
-  "_name_or_path": "OleehyO/TexTeller",
-  "architectures": [
-    "VisionEncoderDecoderModel"
-  ],
-  "decoder": {
-    "_name_or_path": "",
-    "activation_dropout": 0.0,
-    "activation_function": "gelu",
-    "add_cross_attention": true,
-    "architectures": null,
-    "attention_dropout": 0.0,
-    "bad_words_ids": null,
-    "begin_suppress_tokens": null,
-    "bos_token_id": 0,
-    "chunk_size_feed_forward": 0,
-    "classifier_dropout": 0.0,
-    "cross_attention_hidden_size": 768,
-    "d_model": 1024,
-    "decoder_attention_heads": 16,
-    "decoder_ffn_dim": 4096,
-    "decoder_layerdrop": 0.0,
-    "decoder_layers": 12,
-    "decoder_start_token_id": 2,
-    "diversity_penalty": 0.0,
-    "do_sample": false,
-    "dropout": 0.1,
-    "early_stopping": false,
-    "encoder_no_repeat_ngram_size": 0,
-    "eos_token_id": 2,
-    "exponential_decay_length_penalty": null,
-    "finetuning_task": null,
-    "forced_bos_token_id": null,
-    "forced_eos_token_id": null,
-    "id2label": {
-      "0": "LABEL_0",
-      "1": "LABEL_1"
-    },
-    "init_std": 0.02,
-    "is_decoder": true,
-    "is_encoder_decoder": false,
-    "label2id": {
-      "LABEL_0": 0,
-      "LABEL_1": 1
-    },
-    "layernorm_embedding": true,
-    "length_penalty": 1.0,
-    "max_length": 20,
-    "max_position_embeddings": 1024,
-    "min_length": 0,
-    "model_type": "trocr",
-    "no_repeat_ngram_size": 0,
-    "num_beam_groups": 1,
-    "num_beams": 1,
-    "num_return_sequences": 1,
-    "output_attentions": false,
-    "output_hidden_states": false,
-    "output_scores": false,
-    "pad_token_id": 1,
-    "prefix": null,
-    "problem_type": null,
-    "pruned_heads": {},
-    "remove_invalid_values": false,
-    "repetition_penalty": 1.0,
-    "return_dict": true,
-    "return_dict_in_generate": false,
-    "scale_embedding": false,
-    "sep_token_id": null,
-    "suppress_tokens": null,
-    "task_specific_params": null,
-    "temperature": 1.0,
-    "tf_legacy_loss": false,
-    "tie_encoder_decoder": false,
-    "tie_word_embeddings": true,
-    "tokenizer_class": null,
-    "top_k": 50,
-    "top_p": 1.0,
-    "torch_dtype": null,
-    "torchscript": false,
-    "typical_p": 1.0,
-    "use_bfloat16": false,
-    "use_cache": false,
-    "use_learned_position_embeddings": true,
-    "vocab_size": 15000
-  },
-  "encoder": {
-    "_name_or_path": "",
-    "add_cross_attention": false,
-    "architectures": null,
-    "attention_probs_dropout_prob": 0.0,
-    "bad_words_ids": null,
-    "begin_suppress_tokens": null,
-    "bos_token_id": null,
-    "chunk_size_feed_forward": 0,
-    "cross_attention_hidden_size": null,
-    "decoder_start_token_id": null,
-    "diversity_penalty": 0.0,
-    "do_sample": false,
-    "early_stopping": false,
-    "encoder_no_repeat_ngram_size": 0,
-    "encoder_stride": 16,
-    "eos_token_id": null,
-    "exponential_decay_length_penalty": null,
-    "finetuning_task": null,
-    "forced_bos_token_id": null,
-    "forced_eos_token_id": null,
-    "hidden_act": "gelu",
-    "hidden_dropout_prob": 0.0,
-    "hidden_size": 768,
-    "id2label": {
-      "0": "LABEL_0",
-      "1": "LABEL_1"
-    },
-    "image_size": 448,
-    "initializer_range": 0.02,
-    "intermediate_size": 3072,
-    "is_decoder": false,
-    "is_encoder_decoder": false,
-    "label2id": {
-      "LABEL_0": 0,
-      "LABEL_1": 1
-    },
-    "layer_norm_eps": 1e-12,
-    "length_penalty": 1.0,
-    "max_length": 20,
-    "min_length": 0,
-    "model_type": "vit",
-    "no_repeat_ngram_size": 0,
-    "num_attention_heads": 12,
-    "num_beam_groups": 1,
-    "num_beams": 1,
-    "num_channels": 1,
-    "num_hidden_layers": 12,
-    "num_return_sequences": 1,
-    "output_attentions": false,
-    "output_hidden_states": false,
-    "output_scores": false,
-    "pad_token_id": null,
-    "patch_size": 16,
-    "prefix": null,
-    "problem_type": null,
-    "pruned_heads": {},
-    "qkv_bias": false,
-    "remove_invalid_values": false,
-    "repetition_penalty": 1.0,
-    "return_dict": true,
-    "return_dict_in_generate": false,
-    "sep_token_id": null,
-    "suppress_tokens": null,
-    "task_specific_params": null,
-    "temperature": 1.0,
-    "tf_legacy_loss": false,
-    "tie_encoder_decoder": false,
-    "tie_word_embeddings": true,
-    "tokenizer_class": null,
-    "top_k": 50,
-    "top_p": 1.0,
-    "torch_dtype": null,
-    "torchscript": false,
-    "typical_p": 1.0,
-    "use_bfloat16": false
-  },
-  "is_encoder_decoder": true,
-  "model_type": "vision-encoder-decoder",
-  "tie_word_embeddings": false,
-  "transformers_version": "4.41.2",
-  "use_cache": true
-}

texteller/models/ocr_model/train/dataset/train/metadata.jsonl

@@ -1,35 +0,0 @@
-{"file_name": "0.png", "latex_formula": "\\[\\mathbb{C}^{4}\\stackrel{{\\pi_{1}}}{{\\longleftarrow}}\\mathcal{ F}\\stackrel{{\\pi_{2}}}{{\\rightarrow}}\\mathcal{PT},\\]"}
-{"file_name": "1.png", "latex_formula": "\\[W^{*}_{Z}(x_{1},x_{2})=W_{f\\lrcorner Z}(y_{1},y_{2})=\\mathcal{P}\\exp\\left( \\int_{\\gamma}A_{\\mu}dx^{\\mu}\\right).\\]"}
-{"file_name": "2.png", "latex_formula": "\\[G=W^{*}_{Z}(q,p)=\\tilde{H}H^{-1}\\]"}
-{"file_name": "3.png", "latex_formula": "\\[H=W^{*}_{Z}(p,x),\\ \\ \\tilde{H}=W^{*}_{Z}(q,x).\\]"}
-{"file_name": "4.png", "latex_formula": "\\[v\\cdot f^{*}A|_{x}=(f\\lrcorner Z)_{*}v\\cdot A|_{f\\lrcorner Z(x)},\\quad x\\in Z, \\ v\\in T_{x}Z.\\]"}
-{"file_name": "5.png", "latex_formula": "\\[(f\\lrcorner Z)_{*}v\\cdot A|_{f\\lrcorner Z(x)}=v^{\\alpha\\dot{\\alpha}}\\Big{(} \\frac{\\partial y^{\\beta\\dot{\\beta}}}{\\partial x^{\\alpha\\dot{\\alpha}}}A_{\\beta \\dot{\\beta}}\\Big{)}\\Big{|}_{f\\lrcorner Z(x)},\\ x\\in Z,\\ v\\in T_{x}Z,\\]"}
-{"file_name": "6.png", "latex_formula": "\\[\\{T_{i},T_{j}\\}=\\{\\tilde{T}^{i},\\tilde{T}^{j}\\}=0,\\ \\ \\{T_{i},\\tilde{T}^{j}\\}=2i \\delta^{j}_{i}D,\\]"}
-{"file_name": "7.png", "latex_formula": "\\[(\\partial_{s},q_{i},\\tilde{q}^{k})\\rightarrow(D,M^{j}_{i}T_{j},\\tilde{M}^{k}_ {l}\\tilde{T}^{l}),\\]"}
-{"file_name": "8.png", "latex_formula": "\\[M^{i}_{j}\\tilde{M}^{j}_{k}=\\delta^{i}_{k}.\\]"}
-{"file_name": "9.png", "latex_formula": "\\[Q_{i\\alpha}=q_{i\\alpha}+\\omega_{i\\alpha},\\ \\tilde{Q}^{i}_{\\dot{\\alpha}}=q^{i}_{ \\dot{\\alpha}}+\\tilde{\\omega}^{i}_{\\dot{\\alpha}},\\ D_{\\alpha\\dot{\\alpha}}= \\partial_{\\alpha\\dot{\\alpha}}+A_{\\alpha\\dot{\\alpha}}.\\]"}
-{"file_name": "10.png", "latex_formula": "\\[\\hat{f}(g,\\theta^{i\\alpha},\\tilde{\\theta}^{\\dot{\\alpha}}_{j})=(f(g),[V^{-1}]^ {\\alpha}_{\\beta}\\theta^{i\\beta},[\\tilde{V}^{-1}]^{\\dot{\\alpha}}_{\\dot{\\beta}} \\tilde{\\theta}^{\\dot{\\beta}}_{j}),\\ g\\in{\\cal G},\\]"}
-{"file_name": "11.png", "latex_formula": "\\[v^{\\beta\\dot{\\beta}}V^{\\alpha}_{\\beta}\\tilde{V}^{\\dot{\\alpha}}_{\\dot{\\beta}} =((f\\lrcorner L_{0})_{*}v)^{\\alpha\\dot{\\alpha}},\\]"}
-{"file_name": "12.png", "latex_formula": "\\[\\omega_{i\\alpha}=\\tilde{\\theta}^{\\dot{\\alpha}}_{i}h_{\\alpha\\dot{\\alpha}}(x^{ \\beta\\dot{\\beta}},\\tau^{\\beta\\dot{\\beta}}),\\ \\ \\tilde{\\omega}^{i}_{\\alpha}=\\theta^{i\\alpha}\\tilde{h}_{\\alpha\\dot{\\alpha}}(x^{ \\beta\\dot{\\beta}},\\tau^{\\beta\\dot{\\beta}}),\\]"}
-{"file_name": "13.png", "latex_formula": "\\[\\begin{split}&\\lambda^{\\alpha}\\hat{f}^{*}\\omega_{i\\alpha}(z)= \\tilde{\\theta}^{\\dot{\\beta}}_{i}\\lambda^{\\alpha}\\left(V^{\\beta}_{\\alpha}h_{ \\beta\\dot{\\beta}}(x^{\\prime},\\tau^{\\prime})\\right),\\\\ &\\tilde{\\lambda}^{\\dot{\\alpha}}\\hat{f}^{*}\\tilde{\\omega}^{i}_{ \\dot{\\alpha}}(z)=\\theta^{i\\beta}\\tilde{\\lambda}^{\\dot{\\alpha}}\\left(\\tilde{V}^ {\\dot{\\beta}}_{\\dot{\\alpha}}\\tilde{h}_{\\beta\\dot{\\beta}}(x^{\\prime},\\tau^{ \\prime})\\right),\\end{split}\\]"}
-{"file_name": "14.png", "latex_formula": "\\[A_{\\alpha\\dot{\\alpha}}=A_{\\alpha\\dot{\\alpha}}(x^{\\beta\\dot{\\beta}},\\tau^{ \\beta\\dot{\\beta}})\\]"}
-{"file_name": "15.png", "latex_formula": "\\[D=\\lambda^{\\alpha}\\tilde{\\lambda}^{\\dot{\\alpha}}D_{\\alpha\\dot{\\alpha}}\\]"}
-{"file_name": "16.png", "latex_formula": "\\[D=\\lambda^{\\alpha}\\tilde{\\lambda}^{\\dot{\\alpha}}\\partial_{\\alpha\\dot{\\alpha}}\\]"}
-{"file_name": "17.png", "latex_formula": "\\[[v_{1}\\cdot D^{*},v_{2}\\cdot D^{*}]=0\\]"}
-{"file_name": "18.png", "latex_formula": "\\[\\Phi_{A}=(\\omega_{i\\alpha},\\tilde{\\omega}^{i}_{\\dot{\\alpha}},A_{\\alpha\\dot{ \\alpha}})\\]"}
-{"file_name": "19.png", "latex_formula": "\\[\\hat{f}:{\\cal F}^{6|4N}\\rightarrow{\\cal F}^{6|4N}\\]"}
-{"file_name": "20.png", "latex_formula": "\\[\\sigma=(s,\\xi^{i},\\tilde{\\xi}_{j})\\in\\mathbb{C}^{1|2N}\\]"}
-{"file_name": "21.png", "latex_formula": "\\[\\tau^{\\alpha\\dot{\\alpha}}(h_{\\alpha\\dot{\\alpha}}+\\tilde{h}_{\\alpha\\dot{\\alpha} })=0\\]"}
-{"file_name": "22.png", "latex_formula": "\\[\\tau^{\\alpha\\dot{\\alpha}}\\rightarrow[V^{-1}]^{\\alpha}_{\\beta}[\\tilde{V}^{-1}]^{ \\dot{\\alpha}}_{\\dot{\\beta}}\\tau^{\\beta\\dot{\\beta}}\\]"}
-{"file_name": "23.png", "latex_formula": "\\[\\tau^{\\beta\\dot{\\beta}}=\\sum_{i}\\theta^{i\\beta}\\tilde{\\theta}^{\\dot{\\beta}}_{i}\\]"}
-{"file_name": "24.png", "latex_formula": "\\[\\theta^{i\\alpha}\\omega_{i\\alpha}+\\tilde{\\theta}^{i}_{\\dot{\\alpha}}\\tilde{ \\omega}^{\\dot{\\alpha}}_{i}=0\\]"}
-{"file_name": "25.png", "latex_formula": "\\[\\tilde{T}^{i}=\\tilde{\\lambda}^{\\dot{\\alpha}}\\tilde{Q}^{i}_{\\dot{\\alpha}}\\]"}
-{"file_name": "26.png", "latex_formula": "\\[\\tilde{T}^{i}=\\tilde{\\lambda}^{\\dot{\\alpha}}\\tilde{q}^{i}_{\\dot{\\alpha}}\\]"}
-{"file_name": "27.png", "latex_formula": "\\[\\tilde{\\lambda}^{\\dot{\\alpha}}f^{*}A_{\\alpha\\dot{\\alpha}}=H^{-1}\\tilde{ \\lambda}^{\\dot{\\alpha}}\\partial_{\\alpha\\dot{\\alpha}}H\\]"}
-{"file_name": "28.png", "latex_formula": "\\[\\tilde{q}^{i}=\\partial_{\\tilde{\\xi}_{i}}+i\\xi^{i}\\partial_{s}\\]"}
-{"file_name": "29.png", "latex_formula": "\\[\\tilde{q}^{i}_{\\dot{\\alpha}}=\\frac{\\partial}{\\partial\\tilde{\\theta}^{\\dot{ \\alpha}}_{i}}+i\\theta^{i\\alpha}\\frac{\\partial}{\\partial x^{\\alpha\\dot{\\alpha}}}\\]"}
-{"file_name": "30.png", "latex_formula": "\\[f\\lrcorner L(z)=\\pi_{1}\\circ f(z,\\lambda,\\tilde{\\lambda})\\ \\forall z\\in L\\]"}
-{"file_name": "31.png", "latex_formula": "\\[q_{i\\alpha}=\\frac{\\partial}{\\partial\\theta^{i\\alpha}}+i\\tilde{\\theta}^{\\dot{ \\alpha}}_{i}\\frac{\\partial}{\\partial x^{\\alpha\\dot{\\alpha}}}\\]"}
-{"file_name": "32.png", "latex_formula": "\\[q_{i}=\\partial_{\\xi^{i}}+i\\tilde{\\xi}_{i}\\partial_{s}\\]"}
-{"file_name": "33.png", "latex_formula": "\\[v^{\\alpha\\dot{\\alpha}}=\\lambda^{\\alpha}\\tilde{\\lambda}^{\\dot{\\alpha}}\\]"}
-{"file_name": "34.png", "latex_formula": "\\[z^{A}=(x^{\\alpha\\dot{\\alpha}},\\theta^{i\\alpha},\\tilde{\\theta}^{\\dot{\\alpha}}_{ j})\\]"}

texteller/models/ocr_model/train/train.py

@@ -1,114 +0,0 @@
-import os
-
-from functools import partial
-from pathlib import Path
-
-from datasets import load_dataset
-from transformers import (
-    Trainer,
-    TrainingArguments,
-    Seq2SeqTrainer,
-    Seq2SeqTrainingArguments,
-    GenerationConfig,
-)
-
-from .training_args import CONFIG
-from ..model.TexTeller import TexTeller
-from ..utils.functional import (
-    tokenize_fn,
-    collate_fn,
-    img_train_transform,
-    img_inf_transform,
-    filter_fn,
-)
-from ..utils.metrics import bleu_metric
-from ...globals import MAX_TOKEN_SIZE, MIN_WIDTH, MIN_HEIGHT
-
-
-def train(model, tokenizer, train_dataset, eval_dataset, collate_fn_with_tokenizer):
-    training_args = TrainingArguments(**CONFIG)
-    trainer = Trainer(
-        model,
-        training_args,
-        train_dataset=train_dataset,
-        eval_dataset=eval_dataset,
-        tokenizer=tokenizer,
-        data_collator=collate_fn_with_tokenizer,
-    )
-
-    trainer.train(resume_from_checkpoint=None)
-
-
-def evaluate(model, tokenizer, eval_dataset, collate_fn):
-    eval_config = CONFIG.copy()
-    eval_config['predict_with_generate'] = True
-    generate_config = GenerationConfig(
-        max_new_tokens=MAX_TOKEN_SIZE,
-        num_beams=1,
-        do_sample=False,
-        pad_token_id=tokenizer.pad_token_id,
-        eos_token_id=tokenizer.eos_token_id,
-        bos_token_id=tokenizer.bos_token_id,
-    )
-    eval_config['generation_config'] = generate_config
-    seq2seq_config = Seq2SeqTrainingArguments(**eval_config)
-
-    trainer = Seq2SeqTrainer(
-        model,
-        seq2seq_config,
-        eval_dataset=eval_dataset,
-        tokenizer=tokenizer,
-        data_collator=collate_fn,
-        compute_metrics=partial(bleu_metric, tokenizer=tokenizer),
-    )
-
-    eval_res = trainer.evaluate()
-    print(eval_res)
-
-
-if __name__ == '__main__':
-    script_dirpath = Path(__file__).resolve().parent
-    os.chdir(script_dirpath)
-
-    # dataset = load_dataset(str(Path('./dataset/loader.py').resolve()))['train']
-    dataset = load_dataset("imagefolder", data_dir=str(script_dirpath / 'dataset'))['train']
-    dataset = dataset.filter(
-        lambda x: x['image'].height > MIN_HEIGHT and x['image'].width > MIN_WIDTH
-    )
-    dataset = dataset.shuffle(seed=42)
-    dataset = dataset.flatten_indices()
-
-    tokenizer = TexTeller.get_tokenizer()
-    # If you want use your own tokenizer, please modify the path to your tokenizer
-    # +tokenizer = TexTeller.get_tokenizer('/path/to/your/tokenizer')
-    filter_fn_with_tokenizer = partial(filter_fn, tokenizer=tokenizer)
-    dataset = dataset.filter(filter_fn_with_tokenizer, num_proc=8)
-
-    map_fn = partial(tokenize_fn, tokenizer=tokenizer)
-    tokenized_dataset = dataset.map(
-        map_fn, batched=True, remove_columns=dataset.column_names, num_proc=8
-    )
-
-    # Split dataset into train and eval, ratio 9:1
-    split_dataset = tokenized_dataset.train_test_split(test_size=0.1, seed=42)
-    train_dataset, eval_dataset = split_dataset['train'], split_dataset['test']
-    train_dataset = train_dataset.with_transform(img_train_transform)
-    eval_dataset = eval_dataset.with_transform(img_inf_transform)
-    collate_fn_with_tokenizer = partial(collate_fn, tokenizer=tokenizer)
-
-    # Train from scratch
-    model = TexTeller()
-    # or train from TexTeller pre-trained model: model = TexTeller.from_pretrained()
-
-    # If you want to train from pre-trained model, please modify the path to your pre-trained checkpoint
-    # +e.g.
-    # +model = TexTeller.from_pretrained(
-    # +    '/path/to/your/model_checkpoint'
-    # +)
-
-    enable_train = True
-    enable_evaluate = False
-    if enable_train:
-        train(model, tokenizer, train_dataset, eval_dataset, collate_fn_with_tokenizer)
-    if enable_evaluate and len(eval_dataset) > 0:
-        evaluate(model, tokenizer, eval_dataset, collate_fn_with_tokenizer)

texteller/models/ocr_model/train/training_args.py

@@ -1,31 +0,0 @@
-CONFIG = {
-    "seed": 42,  # Random seed for reproducibility
-    "use_cpu": False,  # Whether to use CPU (it's easier to debug with CPU when starting to test the code)
-    "learning_rate": 5e-5,  # Learning rate
-    "num_train_epochs": 10,  # Total number of training epochs
-    "per_device_train_batch_size": 4,  # Batch size per GPU for training
-    "per_device_eval_batch_size": 8,  # Batch size per GPU for evaluation
-    "output_dir": "train_result",  # Output directory
-    "overwrite_output_dir": False,  # If the output directory exists, do not delete its content
-    "report_to": ["tensorboard"],  # Report logs to TensorBoard
-    "save_strategy": "steps",  # Strategy to save checkpoints
-    "save_steps": 500,  # Interval of steps to save checkpoints, can be int or a float (0~1), when float it represents the ratio of total training steps (e.g., can set to 1.0 / 2000)
-    "save_total_limit": 5,  # Maximum number of models to save. The oldest models will be deleted if this number is exceeded
-    "logging_strategy": "steps",  # Log every certain number of steps
-    "logging_steps": 500,  # Number of steps between each log
-    "logging_nan_inf_filter": False,  # Record logs for loss=nan or inf
-    "optim": "adamw_torch",  # Optimizer
-    "lr_scheduler_type": "cosine",  # Learning rate scheduler
-    "warmup_ratio": 0.1,  # Ratio of warmup steps in total training steps (e.g., for 1000 steps, the first 100 steps gradually increase lr from 0 to the set lr)
-    "max_grad_norm": 1.0,  # For gradient clipping, ensure the norm of the gradients does not exceed 1.0 (default 1.0)
-    "fp16": False,  # Whether to use 16-bit floating point for training (generally not recommended, as loss can easily explode)
-    "bf16": False,  # Whether to use Brain Floating Point (bfloat16) for training (recommended if architecture supports it)
-    "gradient_accumulation_steps": 1,  # Gradient accumulation steps, consider this parameter to achieve large batch size effects when batch size cannot be large
-    "jit_mode_eval": False,  # Whether to use PyTorch jit trace during eval (can speed up the model, but the model must be static, otherwise will throw errors)
-    "torch_compile": False,  # Whether to use torch.compile to compile the model (for better training and inference performance)
-    "dataloader_pin_memory": True,  # Can speed up data transfer between CPU and GPU
-    "dataloader_num_workers": 1,  # Default is not to use multiprocessing for data loading, usually set to 4*number of GPUs used
-    "evaluation_strategy": "steps",  # Evaluation strategy, can be "steps" or "epoch"
-    "eval_steps": 500,  # If evaluation_strategy="step"
-    "remove_unused_columns": False,  # Don't change this unless you really know what you are doing.
-}

texteller/models/ocr_model/utils/functional.py

@@ -1,60 +0,0 @@
-import torch
-
-from transformers import DataCollatorForLanguageModeling
-from typing import List, Dict, Any
-from .transforms import train_transform, inference_transform
-from ...globals import MIN_HEIGHT, MIN_WIDTH, MAX_TOKEN_SIZE
-
-
-def left_move(x: torch.Tensor, pad_val):
-    assert len(x.shape) == 2, 'x should be 2-dimensional'
-    lefted_x = torch.ones_like(x)
-    lefted_x[:, :-1] = x[:, 1:]
-    lefted_x[:, -1] = pad_val
-    return lefted_x
-
-
-def tokenize_fn(samples: Dict[str, List[Any]], tokenizer=None) -> Dict[str, List[Any]]:
-    assert tokenizer is not None, 'tokenizer should not be None'
-    tokenized_formula = tokenizer(samples['latex_formula'], return_special_tokens_mask=True)
-    tokenized_formula['pixel_values'] = samples['image']
-    return tokenized_formula
-
-
-def collate_fn(samples: List[Dict[str, Any]], tokenizer=None) -> Dict[str, List[Any]]:
-    assert tokenizer is not None, 'tokenizer should not be None'
-    pixel_values = [dic.pop('pixel_values') for dic in samples]
-
-    clm_collator = DataCollatorForLanguageModeling(tokenizer=tokenizer, mlm=False)
-
-    batch = clm_collator(samples)
-    batch['pixel_values'] = pixel_values
-    batch['decoder_input_ids'] = batch.pop('input_ids')
-    batch['decoder_attention_mask'] = batch.pop('attention_mask')
-
-    # 左移labels和decoder_attention_mask
-    batch['labels'] = left_move(batch['labels'], -100)
-
-    # 把list of Image转成一个tensor with (B, C, H, W)
-    batch['pixel_values'] = torch.stack(batch['pixel_values'], dim=0)
-    return batch
-
-
-def img_train_transform(samples: Dict[str, List[Any]]) -> Dict[str, List[Any]]:
-    processed_img = train_transform(samples['pixel_values'])
-    samples['pixel_values'] = processed_img
-    return samples
-
-
-def img_inf_transform(samples: Dict[str, List[Any]]) -> Dict[str, List[Any]]:
-    processed_img = inference_transform(samples['pixel_values'])
-    samples['pixel_values'] = processed_img
-    return samples
-
-
-def filter_fn(sample, tokenizer=None) -> bool:
-    return (
-        sample['image'].height > MIN_HEIGHT
-        and sample['image'].width > MIN_WIDTH
-        and len(tokenizer(sample['latex_formula'])['input_ids']) < MAX_TOKEN_SIZE - 10
-    )

texteller/models/ocr_model/utils/helpers.py

@@ -1,26 +0,0 @@
-import cv2
-import numpy as np
-from typing import List
-
-
-def convert2rgb(image_paths: List[str]) -> List[np.ndarray]:
-    processed_images = []
-    for path in image_paths:
-        image = cv2.imread(path, cv2.IMREAD_UNCHANGED)
-        if image is None:
-            print(f"Image at {path} could not be read.")
-            continue
-        if image.dtype == np.uint16:
-            print(f'Converting {path} to 8-bit, image may be lossy.')
-            image = cv2.convertScaleAbs(image, alpha=(255.0 / 65535.0))
-
-        channels = 1 if len(image.shape) == 2 else image.shape[2]
-        if channels == 4:
-            image = cv2.cvtColor(image, cv2.COLOR_BGRA2RGB)
-        elif channels == 1:
-            image = cv2.cvtColor(image, cv2.COLOR_GRAY2RGB)
-        elif channels == 3:
-            image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
-        processed_images.append(image)
-
-    return processed_images

texteller/models/ocr_model/utils/metrics.py

@@ -1,25 +0,0 @@
-import evaluate
-import numpy as np
-import os
-
-from pathlib import Path
-from typing import Dict
-from transformers import EvalPrediction, RobertaTokenizer
-
-
-def bleu_metric(eval_preds: EvalPrediction, tokenizer: RobertaTokenizer) -> Dict:
-    cur_dir = Path(os.getcwd())
-    os.chdir(Path(__file__).resolve().parent)
-    metric = evaluate.load(
-        'google_bleu'
-    )  # Will download the metric from huggingface if not already downloaded
-    os.chdir(cur_dir)
-
-    logits, labels = eval_preds.predictions, eval_preds.label_ids
-    preds = logits
-
-    labels = np.where(labels == -100, 1, labels)
-
-    preds = tokenizer.batch_decode(preds, skip_special_tokens=True)
-    labels = tokenizer.batch_decode(labels, skip_special_tokens=True)
-    return metric.compute(predictions=preds, references=labels)

texteller/models/ocr_model/utils/ocr_aug.py

@@ -1,152 +0,0 @@
-from augraphy import *
-import random
-
-
-def ocr_augmentation_pipeline():
-    pre_phase = []
-
-    ink_phase = [
-        InkColorSwap(
-            ink_swap_color="random",
-            ink_swap_sequence_number_range=(5, 10),
-            ink_swap_min_width_range=(2, 3),
-            ink_swap_max_width_range=(100, 120),
-            ink_swap_min_height_range=(2, 3),
-            ink_swap_max_height_range=(100, 120),
-            ink_swap_min_area_range=(10, 20),
-            ink_swap_max_area_range=(400, 500),
-            # p=0.2
-            p=0.4,
-        ),
-        LinesDegradation(
-            line_roi=(0.0, 0.0, 1.0, 1.0),
-            line_gradient_range=(32, 255),
-            line_gradient_direction=(0, 2),
-            line_split_probability=(0.2, 0.4),
-            line_replacement_value=(250, 255),
-            line_min_length=(30, 40),
-            line_long_to_short_ratio=(5, 7),
-            line_replacement_probability=(0.4, 0.5),
-            line_replacement_thickness=(1, 3),
-            # p=0.2
-            p=0.4,
-        ),
-        #  ============================
-        OneOf(
-            [
-                Dithering(
-                    dither="floyd-steinberg",
-                    order=(3, 5),
-                ),
-                InkBleed(
-                    intensity_range=(0.1, 0.2),
-                    kernel_size=random.choice([(7, 7), (5, 5), (3, 3)]),
-                    severity=(0.4, 0.6),
-                ),
-            ],
-            # p=0.2
-            p=0.4,
-        ),
-        #  ============================
-        #  ============================
-        InkShifter(
-            text_shift_scale_range=(18, 27),
-            text_shift_factor_range=(1, 4),
-            text_fade_range=(0, 2),
-            blur_kernel_size=(5, 5),
-            blur_sigma=0,
-            noise_type="perlin",
-            # p=0.2
-            p=0.4,
-        ),
-        #  ============================
-    ]
-
-    paper_phase = [
-        NoiseTexturize(  # tested
-            sigma_range=(3, 10),
-            turbulence_range=(2, 5),
-            texture_width_range=(300, 500),
-            texture_height_range=(300, 500),
-            # p=0.2
-            p=0.4,
-        ),
-        BrightnessTexturize(  # tested
-            texturize_range=(0.9, 0.99),
-            deviation=0.03,
-            # p=0.2
-            p=0.4,
-        ),
-    ]
-
-    post_phase = [
-        ColorShift(  # tested
-            color_shift_offset_x_range=(3, 5),
-            color_shift_offset_y_range=(3, 5),
-            color_shift_iterations=(2, 3),
-            color_shift_brightness_range=(0.9, 1.1),
-            color_shift_gaussian_kernel_range=(3, 3),
-            # p=0.2
-            p=0.4,
-        ),
-        DirtyDrum(  # tested
-            line_width_range=(1, 6),
-            line_concentration=random.uniform(0.05, 0.15),
-            direction=random.randint(0, 2),
-            noise_intensity=random.uniform(0.6, 0.95),
-            noise_value=(64, 224),
-            ksize=random.choice([(3, 3), (5, 5), (7, 7)]),
-            sigmaX=0,
-            # p=0.2
-            p=0.4,
-        ),
-        # =====================================
-        OneOf(
-            [
-                LightingGradient(
-                    light_position=None,
-                    direction=None,
-                    max_brightness=255,
-                    min_brightness=0,
-                    mode="gaussian",
-                    linear_decay_rate=None,
-                    transparency=None,
-                ),
-                Brightness(
-                    brightness_range=(0.9, 1.1),
-                    min_brightness=0,
-                    min_brightness_value=(120, 150),
-                ),
-                Gamma(
-                    gamma_range=(0.9, 1.1),
-                ),
-            ],
-            # p=0.2
-            p=0.4,
-        ),
-        # =====================================
-        # =====================================
-        OneOf(
-            [
-                SubtleNoise(
-                    subtle_range=random.randint(5, 10),
-                ),
-                Jpeg(
-                    quality_range=(70, 95),
-                ),
-            ],
-            # p=0.2
-            p=0.4,
-        ),
-        # =====================================
-    ]
-
-    pipeline = AugraphyPipeline(
-        ink_phase=ink_phase,
-        paper_phase=paper_phase,
-        post_phase=post_phase,
-        pre_phase=pre_phase,
-        log=False,
-    )
-
-    return pipeline

texteller/models/ocr_model/utils/transforms.py

@@ -1,177 +0,0 @@
-import torch
-import random
-import numpy as np
-import cv2
-
-from torchvision.transforms import v2
-from typing import List, Union
-from PIL import Image
-from collections import Counter
-
-from ...globals import (
-    IMG_CHANNELS,
-    FIXED_IMG_SIZE,
-    IMAGE_MEAN,
-    IMAGE_STD,
-    MAX_RESIZE_RATIO,
-    MIN_RESIZE_RATIO,
-)
-from .ocr_aug import ocr_augmentation_pipeline
-
-# train_pipeline = default_augraphy_pipeline(scan_only=True)
-train_pipeline = ocr_augmentation_pipeline()
-
-general_transform_pipeline = v2.Compose(
-    [
-        v2.ToImage(),
-        v2.ToDtype(torch.uint8, scale=True),  # optional, most input are already uint8 at this point
-        v2.Grayscale(),
-        v2.Resize(
-            size=FIXED_IMG_SIZE - 1,
-            interpolation=v2.InterpolationMode.BICUBIC,
-            max_size=FIXED_IMG_SIZE,
-            antialias=True,
-        ),
-        v2.ToDtype(torch.float32, scale=True),  # Normalize expects float input
-        v2.Normalize(mean=[IMAGE_MEAN], std=[IMAGE_STD]),
-        # v2.ToPILImage()
-    ]
-)
-
-
-def trim_white_border(image: np.ndarray):
-    if len(image.shape) != 3 or image.shape[2] != 3:
-        raise ValueError("Image is not in RGB format or channel is not in third dimension")
-
-    if image.dtype != np.uint8:
-        raise ValueError(f"Image should stored in uint8")
-
-    corners = [tuple(image[0, 0]), tuple(image[0, -1]), tuple(image[-1, 0]), tuple(image[-1, -1])]
-    bg_color = Counter(corners).most_common(1)[0][0]
-    bg_color_np = np.array(bg_color, dtype=np.uint8)
-
-    h, w = image.shape[:2]
-    bg = np.full((h, w, 3), bg_color_np, dtype=np.uint8)
-
-    diff = cv2.absdiff(image, bg)
-    mask = cv2.cvtColor(diff, cv2.COLOR_BGR2GRAY)
-
-    threshold = 15
-    _, diff = cv2.threshold(mask, threshold, 255, cv2.THRESH_BINARY)
-
-    x, y, w, h = cv2.boundingRect(diff)
-
-    trimmed_image = image[y : y + h, x : x + w]
-
-    return trimmed_image
-
-
-def add_white_border(image: np.ndarray, max_size: int) -> np.ndarray:
-    randi = [random.randint(0, max_size) for _ in range(4)]
-    pad_height_size = randi[1] + randi[3]
-    pad_width_size = randi[0] + randi[2]
-    if pad_height_size + image.shape[0] < 30:
-        compensate_height = int((30 - (pad_height_size + image.shape[0])) * 0.5) + 1
-        randi[1] += compensate_height
-        randi[3] += compensate_height
-    if pad_width_size + image.shape[1] < 30:
-        compensate_width = int((30 - (pad_width_size + image.shape[1])) * 0.5) + 1
-        randi[0] += compensate_width
-        randi[2] += compensate_width
-    return v2.functional.pad(
-        torch.from_numpy(image).permute(2, 0, 1),
-        padding=randi,
-        padding_mode='constant',
-        fill=(255, 255, 255),
-    )
-
-
-def padding(images: List[torch.Tensor], required_size: int) -> List[torch.Tensor]:
-    images = [
-        v2.functional.pad(
-            img, padding=[0, 0, required_size - img.shape[2], required_size - img.shape[1]]
-        )
-        for img in images
-    ]
-    return images
-
-
-def random_resize(images: List[np.ndarray], minr: float, maxr: float) -> List[np.ndarray]:
-    if len(images[0].shape) != 3 or images[0].shape[2] != 3:
-        raise ValueError("Image is not in RGB format or channel is not in third dimension")
-
-    ratios = [random.uniform(minr, maxr) for _ in range(len(images))]
-    return [
-        cv2.resize(
-            img, (int(img.shape[1] * r), int(img.shape[0] * r)), interpolation=cv2.INTER_LANCZOS4
-        )  # 抗锯齿
-        for img, r in zip(images, ratios)
-    ]
-
-
-def rotate(image: np.ndarray, min_angle: int, max_angle: int) -> np.ndarray:
-    # Get the center of the image to define the point of rotation
-    image_center = tuple(np.array(image.shape[1::-1]) / 2)
-
-    # Generate a random angle within the specified range
-    angle = random.randint(min_angle, max_angle)
-
-    # Get the rotation matrix for rotating the image around its center
-    rotation_mat = cv2.getRotationMatrix2D(image_center, angle, 1.0)
-
-    # Determine the size of the rotated image
-    cos = np.abs(rotation_mat[0, 0])
-    sin = np.abs(rotation_mat[0, 1])
-    new_width = int((image.shape[0] * sin) + (image.shape[1] * cos))
-    new_height = int((image.shape[0] * cos) + (image.shape[1] * sin))
-
-    # Adjust the rotation matrix to take into account translation
-    rotation_mat[0, 2] += (new_width / 2) - image_center[0]
-    rotation_mat[1, 2] += (new_height / 2) - image_center[1]
-
-    # Rotate the image with the specified border color (white in this case)
-    rotated_image = cv2.warpAffine(
-        image, rotation_mat, (new_width, new_height), borderValue=(255, 255, 255)
-    )
-
-    return rotated_image
-
-
-def ocr_aug(image: np.ndarray) -> np.ndarray:
-    if random.random() < 0.2:
-        image = rotate(image, -5, 5)
-    image = add_white_border(image, max_size=25).permute(1, 2, 0).numpy()
-    image = train_pipeline(image)
-    return image
-
-
-def train_transform(images: List[Image.Image]) -> List[torch.Tensor]:
-    assert IMG_CHANNELS == 1, "Only support grayscale images for now"
-
-    images = [np.array(img.convert('RGB')) for img in images]
-    # random resize first
-    images = random_resize(images, MIN_RESIZE_RATIO, MAX_RESIZE_RATIO)
-    images = [trim_white_border(image) for image in images]
-
-    # OCR augmentation
-    images = [ocr_aug(image) for image in images]
-
-    # general transform pipeline
-    images = [general_transform_pipeline(image) for image in images]
-    # padding to fixed size
-    images = padding(images, FIXED_IMG_SIZE)
-    return images
-
-
-def inference_transform(images: List[Union[np.ndarray, Image.Image]]) -> List[torch.Tensor]:
-    assert IMG_CHANNELS == 1, "Only support grayscale images for now"
-    images = [
-        np.array(img.convert('RGB')) if isinstance(img, Image.Image) else img for img in images
-    ]
-    images = [trim_white_border(image) for image in images]
-    # general transform pipeline
-    images = [general_transform_pipeline(image) for image in images]  # imgs: List[PIL.Image.Image]
-    # padding to fixed size
-    images = padding(images, FIXED_IMG_SIZE)
-
-    return images

texteller/models/texteller.py

@@ -0,0 +1,48 @@
+from pathlib import Path
+
+from transformers import RobertaTokenizerFast, VisionEncoderDecoderConfig, VisionEncoderDecoderModel
+
+from texteller.constants import (
+    FIXED_IMG_SIZE,
+    IMG_CHANNELS,
+    MAX_TOKEN_SIZE,
+    VOCAB_SIZE,
+)
+from texteller.globals import Globals
+from texteller.types import TexTellerModel
+from texteller.utils import cuda_available
+
+
+class TexTeller(VisionEncoderDecoderModel):
+    def __init__(self):
+        config = VisionEncoderDecoderConfig.from_pretrained(Globals().repo_name)
+        config.encoder.image_size = FIXED_IMG_SIZE
+        config.encoder.num_channels = IMG_CHANNELS
+        config.decoder.vocab_size = VOCAB_SIZE
+        config.decoder.max_position_embeddings = MAX_TOKEN_SIZE
+
+        super().__init__(config=config)
+
+    @classmethod
+    def from_pretrained(cls, model_dir: str | None = None, use_onnx=False) -> TexTellerModel:
+        if model_dir is None or model_dir == Globals().repo_name:
+            if not use_onnx:
+                return VisionEncoderDecoderModel.from_pretrained(Globals().repo_name)
+            else:
+                from optimum.onnxruntime import ORTModelForVision2Seq
+
+                return ORTModelForVision2Seq.from_pretrained(
+                    Globals().repo_name,
+                    provider="CUDAExecutionProvider"
+                    if cuda_available()
+                    else "CPUExecutionProvider",
+                )
+        model_dir = Path(model_dir).resolve()
+        return VisionEncoderDecoderModel.from_pretrained(str(model_dir))
+
+    @classmethod
+    def get_tokenizer(cls, tokenizer_dir: str = None) -> RobertaTokenizerFast:
+        if tokenizer_dir is None or tokenizer_dir == Globals().repo_name:
+            return RobertaTokenizerFast.from_pretrained(Globals().repo_name)
+        tokenizer_dir = Path(tokenizer_dir).resolve()
+        return RobertaTokenizerFast.from_pretrained(str(tokenizer_dir))

texteller/models/tokenizer/train.py

@@ -1,24 +0,0 @@
-import os
-from pathlib import Path
-from datasets import load_dataset
-from ..ocr_model.model.TexTeller import TexTeller
-from ..globals import VOCAB_SIZE
-
-
-if __name__ == '__main__':
-    script_dirpath = Path(__file__).resolve().parent
-    os.chdir(script_dirpath)
-
-    tokenizer = TexTeller.get_tokenizer()
-
-    # Don't forget to config your dataset path in loader.py
-    dataset = load_dataset('../ocr_model/train/dataset/loader.py')['train']
-
-    new_tokenizer = tokenizer.train_new_from_iterator(
-        text_iterator=dataset['latex_formula'],
-        # If you want to use a different vocab size, **change VOCAB_SIZE from globals.py**
-        vocab_size=VOCAB_SIZE,
-    )
-
-    # Save the new tokenizer for later training and inference
-    new_tokenizer.save_pretrained('./your_dir_name')

texteller/models/utils/__init__.py

@@ -1 +0,0 @@
-from .mix_inference import mix_inference

texteller/models/utils/mix_inference.py

@@ -1,261 +0,0 @@
-import re
-import heapq
-import cv2
-import time
-import numpy as np
-
-from collections import Counter
-from typing import List
-from PIL import Image
-
-from ..det_model.inference import predict as latex_det_predict
-from ..det_model.Bbox import Bbox, draw_bboxes
-
-from ..ocr_model.utils.inference import inference as latex_rec_predict
-from ..ocr_model.utils.to_katex import to_katex, change_all
-
-MAXV = 999999999
-
-
-def mask_img(img, bboxes: List[Bbox], bg_color: np.ndarray) -> np.ndarray:
-    mask_img = img.copy()
-    for bbox in bboxes:
-        mask_img[bbox.p.y : bbox.p.y + bbox.h, bbox.p.x : bbox.p.x + bbox.w] = bg_color
-    return mask_img
-
-
-def bbox_merge(sorted_bboxes: List[Bbox]) -> List[Bbox]:
-    if len(sorted_bboxes) == 0:
-        return []
-    bboxes = sorted_bboxes.copy()
-    guard = Bbox(MAXV, bboxes[-1].p.y, -1, -1, label="guard")
-    bboxes.append(guard)
-    res = []
-    prev = bboxes[0]
-    for curr in bboxes:
-        if prev.ur_point.x <= curr.p.x or not prev.same_row(curr):
-            res.append(prev)
-            prev = curr
-        else:
-            prev.w = max(prev.w, curr.ur_point.x - prev.p.x)
-    return res
-
-
-def split_conflict(ocr_bboxes: List[Bbox], latex_bboxes: List[Bbox]) -> List[Bbox]:
-    if latex_bboxes == []:
-        return ocr_bboxes
-    if ocr_bboxes == [] or len(ocr_bboxes) == 1:
-        return ocr_bboxes
-
-    bboxes = sorted(ocr_bboxes + latex_bboxes)
-
-    # log results
-    for idx, bbox in enumerate(bboxes):
-        bbox.content = str(idx)
-    draw_bboxes(Image.fromarray(img), bboxes, name="before_split_confict.png")
-
-    assert len(bboxes) > 1
-
-    heapq.heapify(bboxes)
-    res = []
-    candidate = heapq.heappop(bboxes)
-    curr = heapq.heappop(bboxes)
-    idx = 0
-    while len(bboxes) > 0:
-        idx += 1
-        assert candidate.p.x <= curr.p.x or not candidate.same_row(curr)
-
-        if candidate.ur_point.x <= curr.p.x or not candidate.same_row(curr):
-            res.append(candidate)
-            candidate = curr
-            curr = heapq.heappop(bboxes)
-        elif candidate.ur_point.x < curr.ur_point.x:
-            assert not (candidate.label != "text" and curr.label != "text")
-            if candidate.label == "text" and curr.label == "text":
-                candidate.w = curr.ur_point.x - candidate.p.x
-                curr = heapq.heappop(bboxes)
-            elif candidate.label != curr.label:
-                if candidate.label == "text":
-                    candidate.w = curr.p.x - candidate.p.x
-                    res.append(candidate)
-                    candidate = curr
-                    curr = heapq.heappop(bboxes)
-                else:
-                    curr.w = curr.ur_point.x - candidate.ur_point.x
-                    curr.p.x = candidate.ur_point.x
-                    heapq.heappush(bboxes, curr)
-                    curr = heapq.heappop(bboxes)
-
-        elif candidate.ur_point.x >= curr.ur_point.x:
-            assert not (candidate.label != "text" and curr.label != "text")
-
-            if candidate.label == "text":
-                assert curr.label != "text"
-                heapq.heappush(
-                    bboxes,
-                    Bbox(
-                        curr.ur_point.x,
-                        candidate.p.y,
-                        candidate.h,
-                        candidate.ur_point.x - curr.ur_point.x,
-                        label="text",
-                        confidence=candidate.confidence,
-                        content=None,
-                    ),
-                )
-                candidate.w = curr.p.x - candidate.p.x
-                res.append(candidate)
-                candidate = curr
-                curr = heapq.heappop(bboxes)
-            else:
-                assert curr.label == "text"
-                curr = heapq.heappop(bboxes)
-        else:
-            assert False
-    res.append(candidate)
-    res.append(curr)
-
-    # log results
-    for idx, bbox in enumerate(res):
-        bbox.content = str(idx)
-    draw_bboxes(Image.fromarray(img), res, name="after_split_confict.png")
-
-    return res
-
-
-def slice_from_image(img: np.ndarray, ocr_bboxes: List[Bbox]) -> List[np.ndarray]:
-    sliced_imgs = []
-    for bbox in ocr_bboxes:
-        x, y = int(bbox.p.x), int(bbox.p.y)
-        w, h = int(bbox.w), int(bbox.h)
-        sliced_img = img[y : y + h, x : x + w]
-        sliced_imgs.append(sliced_img)
-    return sliced_imgs
-
-
-def mix_inference(
-    img_path: str,
-    infer_config,
-    latex_det_model,
-    lang_ocr_models,
-    latex_rec_models,
-    accelerator="cpu",
-    num_beams=1,
-) -> str:
-    '''
-    Input a mixed image of formula text and output str (in markdown syntax)
-    '''
-    global img
-    img = cv2.imread(img_path)
-    corners = [tuple(img[0, 0]), tuple(img[0, -1]), tuple(img[-1, 0]), tuple(img[-1, -1])]
-    bg_color = np.array(Counter(corners).most_common(1)[0][0])
-
-    start_time = time.time()
-    latex_bboxes = latex_det_predict(img_path, latex_det_model, infer_config)
-    end_time = time.time()
-    print(f"latex_det_model time: {end_time - start_time:.2f}s")
-    latex_bboxes = sorted(latex_bboxes)
-    # log results
-    draw_bboxes(Image.fromarray(img), latex_bboxes, name="latex_bboxes(unmerged).png")
-    latex_bboxes = bbox_merge(latex_bboxes)
-    # log results
-    draw_bboxes(Image.fromarray(img), latex_bboxes, name="latex_bboxes(merged).png")
-    masked_img = mask_img(img, latex_bboxes, bg_color)
-
-    det_model, rec_model = lang_ocr_models
-    start_time = time.time()
-    det_prediction, _ = det_model(masked_img)
-    end_time = time.time()
-    print(f"ocr_det_model time: {end_time - start_time:.2f}s")
-    ocr_bboxes = [
-        Bbox(
-            p[0][0],
-            p[0][1],
-            p[3][1] - p[0][1],
-            p[1][0] - p[0][0],
-            label="text",
-            confidence=None,
-            content=None,
-        )
-        for p in det_prediction
-    ]
-    # log results
-    draw_bboxes(Image.fromarray(img), ocr_bboxes, name="ocr_bboxes(unmerged).png")
-
-    ocr_bboxes = sorted(ocr_bboxes)
-    ocr_bboxes = bbox_merge(ocr_bboxes)
-    # log results
-    draw_bboxes(Image.fromarray(img), ocr_bboxes, name="ocr_bboxes(merged).png")
-    ocr_bboxes = split_conflict(ocr_bboxes, latex_bboxes)
-    ocr_bboxes = list(filter(lambda x: x.label == "text", ocr_bboxes))
-
-    sliced_imgs: List[np.ndarray] = slice_from_image(img, ocr_bboxes)
-    start_time = time.time()
-    rec_predictions, _ = rec_model(sliced_imgs)
-    end_time = time.time()
-    print(f"ocr_rec_model time: {end_time - start_time:.2f}s")
-
-    assert len(rec_predictions) == len(ocr_bboxes)
-    for content, bbox in zip(rec_predictions, ocr_bboxes):
-        bbox.content = content[0]
-
-    latex_imgs = []
-    for bbox in latex_bboxes:
-        latex_imgs.append(img[bbox.p.y : bbox.p.y + bbox.h, bbox.p.x : bbox.p.x + bbox.w])
-    start_time = time.time()
-    latex_rec_res = latex_rec_predict(
-        *latex_rec_models, latex_imgs, accelerator, num_beams, max_tokens=800
-    )
-    end_time = time.time()
-    print(f"latex_rec_model time: {end_time - start_time:.2f}s")
-
-    for bbox, content in zip(latex_bboxes, latex_rec_res):
-        bbox.content = to_katex(content)
-        if bbox.label == "embedding":
-            bbox.content = " $" + bbox.content + "$ "
-        elif bbox.label == "isolated":
-            bbox.content = '\n\n' + r"$$" + bbox.content + r"$$" + '\n\n'
-
-    bboxes = sorted(ocr_bboxes + latex_bboxes)
-    if bboxes == []:
-        return ""
-
-    md = ""
-    prev = Bbox(bboxes[0].p.x, bboxes[0].p.y, -1, -1, label="guard")
-    for curr in bboxes:
-        # Add the formula number back to the isolated formula
-        if prev.label == "isolated" and curr.label == "text" and prev.same_row(curr):
-            curr.content = curr.content.strip()
-            if curr.content.startswith('(') and curr.content.endswith(')'):
-                curr.content = curr.content[1:-1]
-
-            if re.search(r'\\tag\{.*\}$', md[:-4]) is not None:
-                # in case of multiple tag
-                md = md[:-5] + f', {curr.content}' + '}' + md[-4:]
-            else:
-                md = md[:-4] + f'\\tag{{{curr.content}}}' + md[-4:]
-            continue
-
-        if not prev.same_row(curr):
-            md += " "
-
-        if curr.label == "embedding":
-            # remove the bold effect from inline formulas
-            curr.content = change_all(curr.content, r'\bm', r' ', r'{', r'}', r'', r' ')
-            curr.content = change_all(curr.content, r'\boldsymbol', r' ', r'{', r'}', r'', r' ')
-            curr.content = change_all(curr.content, r'\textit', r' ', r'{', r'}', r'', r' ')
-            curr.content = change_all(curr.content, r'\textbf', r' ', r'{', r'}', r'', r' ')
-            curr.content = change_all(curr.content, r'\textbf', r' ', r'{', r'}', r'', r' ')
-            curr.content = change_all(curr.content, r'\mathbf', r' ', r'{', r'}', r'', r' ')
-
-            # change split environment into aligned
-            curr.content = curr.content.replace(r'\begin{split}', r'\begin{aligned}')
-            curr.content = curr.content.replace(r'\end{split}', r'\end{aligned}')
-
-            # remove extra spaces (keeping only one)
-            curr.content = re.sub(r' +', ' ', curr.content)
-            assert curr.content.startswith(' $') and curr.content.endswith('$ ')
-            curr.content = ' $' + curr.content[2:-2].strip() + '$ '
-        md += curr.content
-        prev = curr
-    return md.strip()

texteller/paddleocr/CTCLabelDecode.py

@@ -81,7 +81,7 @@ class BaseRecLabelDecode(object):
         word_list = []
         word_col_list = []
         state_list = []
-        valid_col = np.where(selection == True)[0]
+        valid_col = np.where(selection)[0]
 
         for c_i, char in enumerate(text):
             if "\u4e00" <= char <= "\u9fff":

texteller/paddleocr/predict_det.py

@@ -12,25 +12,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import os
-import sys
-
-__dir__ = os.path.dirname(os.path.abspath(__file__))
-sys.path.append(__dir__)
-sys.path.insert(0, os.path.abspath(os.path.join(__dir__, "../..")))
 
 os.environ["FLAGS_allocator_strategy"] = "auto_growth"
 
-import sys
 import time
 
-import cv2
 import numpy as np
 
-# import tools.infer.utility as utility
-import utility
-from DBPostProcess import DBPostProcess
-from operators import DetResizeForTest, KeepKeys, NormalizeImage, ToCHWImage
-from utility import get_logger
+from .DBPostProcess import DBPostProcess
+from .operators import DetResizeForTest, KeepKeys, NormalizeImage, ToCHWImage
+from .utility import create_predictor, get_logger
 
 
 def transform(data, ops=None):
@@ -82,7 +73,7 @@ class TextDetector(object):
             self.input_tensor,
             self.output_tensors,
             self.config,
-        ) = utility.create_predictor(args, "det", logger)
+        ) = create_predictor(args, "det", logger)
 
         assert self.use_onnx
         if self.use_onnx:

texteller/server.py

@@ -1,155 +0,0 @@
-import sys
-import argparse
-import tempfile
-import time
-import numpy as np
-import cv2
-
-from pathlib import Path
-from starlette.requests import Request
-from ray import serve
-from ray.serve.handle import DeploymentHandle
-from onnxruntime import InferenceSession
-
-from texteller.models.ocr_model.utils.inference import inference as rec_inference
-from texteller.models.det_model.inference import predict as det_inference
-from texteller.models.ocr_model.model.TexTeller import TexTeller
-from texteller.models.det_model.inference import PredictConfig
-from texteller.models.ocr_model.utils.to_katex import to_katex
-
-
-PYTHON_VERSION = str(sys.version_info.major) + '.' + str(sys.version_info.minor)
-LIBPATH = Path(sys.executable).parent.parent / 'lib' / ('python' + PYTHON_VERSION) / 'site-packages'
-CUDNNPATH = LIBPATH / 'nvidia' / 'cudnn' / 'lib'
-
-parser = argparse.ArgumentParser()
-parser.add_argument('-ckpt', '--checkpoint_dir', type=str)
-parser.add_argument('-tknz', '--tokenizer_dir', type=str)
-parser.add_argument('-port', '--server_port', type=int, default=8000)
-parser.add_argument('--num_replicas', type=int, default=1)
-parser.add_argument('--ncpu_per_replica', type=float, default=1.0)
-parser.add_argument('--ngpu_per_replica', type=float, default=0.0)
-
-parser.add_argument('--inference-mode', type=str, default='cpu')
-parser.add_argument('--num_beams', type=int, default=1)
-parser.add_argument('-onnx', action='store_true', help='using onnx runtime')
-
-args = parser.parse_args()
-if args.ngpu_per_replica > 0 and not args.inference_mode == 'cuda':
-    raise ValueError("--inference-mode must be cuda or mps if ngpu_per_replica > 0")
-
-
-@serve.deployment(
-    num_replicas=args.num_replicas,
-    ray_actor_options={
-        "num_cpus": args.ncpu_per_replica,
-        "num_gpus": args.ngpu_per_replica * 1.0 / 2,
-    },
-)
-class TexTellerRecServer:
-    def __init__(
-        self,
-        checkpoint_path: str,
-        tokenizer_path: str,
-        inf_mode: str = 'cpu',
-        use_onnx: bool = False,
-        num_beams: int = 1,
-    ) -> None:
-        self.model = TexTeller.from_pretrained(
-            checkpoint_path, use_onnx=use_onnx, onnx_provider=inf_mode
-        )
-        self.tokenizer = TexTeller.get_tokenizer(tokenizer_path)
-        self.inf_mode = inf_mode
-        self.num_beams = num_beams
-
-        if not use_onnx:
-            self.model = self.model.to(inf_mode) if inf_mode != 'cpu' else self.model
-
-    def predict(self, image_nparray) -> str:
-        return to_katex(
-            rec_inference(
-                self.model,
-                self.tokenizer,
-                [image_nparray],
-                accelerator=self.inf_mode,
-                num_beams=self.num_beams,
-            )[0]
-        )
-
-
-@serve.deployment(
-    num_replicas=args.num_replicas,
-    ray_actor_options={
-        "num_cpus": args.ncpu_per_replica,
-        "num_gpus": args.ngpu_per_replica * 1.0 / 2,
-        "runtime_env": {"env_vars": {"LD_LIBRARY_PATH": f"{str(CUDNNPATH)}/:$LD_LIBRARY_PATH"}},
-    },
-)
-class TexTellerDetServer:
-    def __init__(self, inf_mode='cpu'):
-        self.infer_config = PredictConfig("./models/det_model/model/infer_cfg.yml")
-        self.latex_det_model = InferenceSession(
-            "./models/det_model/model/rtdetr_r50vd_6x_coco.onnx",
-            providers=['CUDAExecutionProvider'] if inf_mode == 'cuda' else ['CPUExecutionProvider'],
-        )
-
-    async def predict(self, image_nparray) -> str:
-        with tempfile.TemporaryDirectory() as temp_dir:
-            img_path = f"{temp_dir}/temp_image.jpg"
-            cv2.imwrite(img_path, image_nparray)
-
-            latex_bboxes = det_inference(img_path, self.latex_det_model, self.infer_config)
-            return latex_bboxes
-
-
-@serve.deployment()
-class Ingress:
-    def __init__(self, det_server: DeploymentHandle, rec_server: DeploymentHandle) -> None:
-        self.det_server = det_server
-        self.texteller_server = rec_server
-
-    async def __call__(self, request: Request) -> str:
-        request_path = request.url.path
-        form = await request.form()
-        img_rb = await form['img'].read()
-
-        img_nparray = np.frombuffer(img_rb, np.uint8)
-        img_nparray = cv2.imdecode(img_nparray, cv2.IMREAD_COLOR)
-        img_nparray = cv2.cvtColor(img_nparray, cv2.COLOR_BGR2RGB)
-
-        if request_path.startswith("/fdet"):
-            if self.det_server is None:
-                return "[ERROR] rtdetr_r50vd_6x_coco.onnx not found."
-            pred = await self.det_server.predict.remote(img_nparray)
-            return pred
-
-        elif request_path.startswith("/frec"):
-            pred = await self.texteller_server.predict.remote(img_nparray)
-            return pred
-
-        else:
-            return "[ERROR] Invalid request path"
-
-
-if __name__ == '__main__':
-    ckpt_dir = args.checkpoint_dir
-    tknz_dir = args.tokenizer_dir
-
-    serve.start(http_options={"host": "0.0.0.0", "port": args.server_port})
-    rec_server = TexTellerRecServer.bind(
-        ckpt_dir,
-        tknz_dir,
-        inf_mode=args.inference_mode,
-        use_onnx=args.onnx,
-        num_beams=args.num_beams,
-    )
-    det_server = None
-    if Path('./models/det_model/model/rtdetr_r50vd_6x_coco.onnx').exists():
-        det_server = TexTellerDetServer.bind(args.inference_mode)
-    ingress = Ingress.bind(det_server, rec_server)
-
-    # ingress_handle = serve.run(ingress, route_prefix="/predict")
-    ingress_handle = serve.run(ingress, route_prefix="/")
-
-    while True:
-        time.sleep(1)

texteller/start_web.bat

@@ -1,9 +0,0 @@
-@echo off
-SETLOCAL ENABLEEXTENSIONS
-
-set CHECKPOINT_DIR=default
-set TOKENIZER_DIR=default
-
-streamlit run web.py
-
-ENDLOCAL

texteller/start_web.sh

@@ -1,7 +0,0 @@
-#!/usr/bin/env bash
-set -exu
-
-export CHECKPOINT_DIR="default"
-export TOKENIZER_DIR="default"
-
-streamlit run web.py

texteller/train_config.yaml

@@ -1,14 +0,0 @@
-compute_environment: LOCAL_MACHINE
-debug: false
-distributed_type: MULTI_GPU
-gpu_ids: all
-num_processes: 1
-machine_rank: 0
-main_training_function: main
-num_machines: 1
-rdzv_backend: static
-same_network: true
-tpu_env: []
-tpu_use_cluster: false
-tpu_use_sudo: false
-use_cpu: false

texteller/types/__init__.py

@@ -0,0 +1,12 @@
+from typing import TypeAlias
+
+from optimum.onnxruntime import ORTModelForVision2Seq
+from transformers import VisionEncoderDecoderModel
+
+from .bbox import Bbox
+
+
+TexTellerModel: TypeAlias = VisionEncoderDecoderModel | ORTModelForVision2Seq
+
+
+__all__ = ["Bbox", "TexTellerModel"]

texteller/types/bbox.py

@@ -1,10 +1,3 @@
-import os
-
-from PIL import Image, ImageDraw
-from typing import List
-from pathlib import Path
-
-
 class Point:
     def __init__(self, x: int, y: int):
         self.x = int(x)
@@ -51,9 +44,9 @@ class Bbox:
         return 1.0 * abs(self.p.y - other.p.y) / max(self.h, other.h) < self.THREADHOLD
 
     def __lt__(self, other) -> bool:
-        '''
+        """
         from top to bottom, from left to right
-        '''
+        """
         if not self.same_row(other):
             return self.p.y < other.p.y
         else:
@@ -61,29 +54,3 @@ class Bbox:
 
     def __repr__(self) -> str:
         return f"Bbox(upper_left_point={self.p}, h={self.h}, w={self.w}), label={self.label}, confident={self.confidence}, content={self.content})"
-
-
-def draw_bboxes(img: Image.Image, bboxes: List[Bbox], name="annotated_image.png"):
-    curr_work_dir = Path(os.getcwd())
-    log_dir = curr_work_dir / "logs"
-    log_dir.mkdir(exist_ok=True)
-    drawer = ImageDraw.Draw(img)
-    for bbox in bboxes:
-        # Calculate the coordinates for the rectangle to be drawn
-        left = bbox.p.x
-        top = bbox.p.y
-        right = bbox.p.x + bbox.w
-        bottom = bbox.p.y + bbox.h
-
-        # Draw the rectangle on the image
-        drawer.rectangle([left, top, right, bottom], outline="green", width=1)
-
-        # Optionally, add text label if it exists
-        if bbox.label:
-            drawer.text((left, top), bbox.label, fill="blue")
-
-        if bbox.content:
-            drawer.text((left, bottom - 10), bbox.content[:10], fill="red")
-
-    # Save the image with drawn rectangles
-    img.save(log_dir / name)

texteller/utils/__init__.py

@@ -0,0 +1,26 @@
+from .device import get_device, cuda_available, mps_available, str2device
+from .image import readimgs, transform
+from .latex import change_all, remove_style, add_newlines
+from .path import mkdir, resolve_path
+from .misc import lines_dedent
+from .bbox import mask_img, bbox_merge, split_conflict, slice_from_image, draw_bboxes
+
+__all__ = [
+    "get_device",
+    "cuda_available",
+    "mps_available",
+    "str2device",
+    "readimgs",
+    "transform",
+    "change_all",
+    "remove_style",
+    "add_newlines",
+    "mkdir",
+    "resolve_path",
+    "lines_dedent",
+    "mask_img",
+    "bbox_merge",
+    "split_conflict",
+    "slice_from_image",
+    "draw_bboxes",
+]

texteller/utils/bbox.py

@@ -0,0 +1,142 @@
+import heapq
+import os
+from pathlib import Path
+
+import numpy as np
+from PIL import Image, ImageDraw
+
+from texteller.types import Bbox
+
+_MAXV = 999999999
+
+
+def mask_img(img, bboxes: list[Bbox], bg_color: np.ndarray) -> np.ndarray:
+    mask_img = img.copy()
+    for bbox in bboxes:
+        mask_img[bbox.p.y : bbox.p.y + bbox.h, bbox.p.x : bbox.p.x + bbox.w] = bg_color
+    return mask_img
+
+
+def bbox_merge(sorted_bboxes: list[Bbox]) -> list[Bbox]:
+    if len(sorted_bboxes) == 0:
+        return []
+    bboxes = sorted_bboxes.copy()
+    guard = Bbox(_MAXV, bboxes[-1].p.y, -1, -1, label="guard")
+    bboxes.append(guard)
+    res = []
+    prev = bboxes[0]
+    for curr in bboxes:
+        if prev.ur_point.x <= curr.p.x or not prev.same_row(curr):
+            res.append(prev)
+            prev = curr
+        else:
+            prev.w = max(prev.w, curr.ur_point.x - prev.p.x)
+    return res
+
+
+def split_conflict(ocr_bboxes: list[Bbox], latex_bboxes: list[Bbox]) -> list[Bbox]:
+    if latex_bboxes == []:
+        return ocr_bboxes
+    if ocr_bboxes == [] or len(ocr_bboxes) == 1:
+        return ocr_bboxes
+
+    bboxes = sorted(ocr_bboxes + latex_bboxes)
+
+    assert len(bboxes) > 1
+
+    heapq.heapify(bboxes)
+    res = []
+    candidate = heapq.heappop(bboxes)
+    curr = heapq.heappop(bboxes)
+    idx = 0
+    while len(bboxes) > 0:
+        idx += 1
+        assert candidate.p.x <= curr.p.x or not candidate.same_row(curr)
+
+        if candidate.ur_point.x <= curr.p.x or not candidate.same_row(curr):
+            res.append(candidate)
+            candidate = curr
+            curr = heapq.heappop(bboxes)
+        elif candidate.ur_point.x < curr.ur_point.x:
+            assert not (candidate.label != "text" and curr.label != "text")
+            if candidate.label == "text" and curr.label == "text":
+                candidate.w = curr.ur_point.x - candidate.p.x
+                curr = heapq.heappop(bboxes)
+            elif candidate.label != curr.label:
+                if candidate.label == "text":
+                    candidate.w = curr.p.x - candidate.p.x
+                    res.append(candidate)
+                    candidate = curr
+                    curr = heapq.heappop(bboxes)
+                else:
+                    curr.w = curr.ur_point.x - candidate.ur_point.x
+                    curr.p.x = candidate.ur_point.x
+                    heapq.heappush(bboxes, curr)
+                    curr = heapq.heappop(bboxes)
+
+        elif candidate.ur_point.x >= curr.ur_point.x:
+            assert not (candidate.label != "text" and curr.label != "text")
+
+            if candidate.label == "text":
+                assert curr.label != "text"
+                heapq.heappush(
+                    bboxes,
+                    Bbox(
+                        curr.ur_point.x,
+                        candidate.p.y,
+                        candidate.h,
+                        candidate.ur_point.x - curr.ur_point.x,
+                        label="text",
+                        confidence=candidate.confidence,
+                        content=None,
+                    ),
+                )
+                candidate.w = curr.p.x - candidate.p.x
+                res.append(candidate)
+                candidate = curr
+                curr = heapq.heappop(bboxes)
+            else:
+                assert curr.label == "text"
+                curr = heapq.heappop(bboxes)
+        else:
+            assert False
+    res.append(candidate)
+    res.append(curr)
+
+    return res
+
+
+def slice_from_image(img: np.ndarray, ocr_bboxes: list[Bbox]) -> list[np.ndarray]:
+    sliced_imgs = []
+    for bbox in ocr_bboxes:
+        x, y = int(bbox.p.x), int(bbox.p.y)
+        w, h = int(bbox.w), int(bbox.h)
+        sliced_img = img[y : y + h, x : x + w]
+        sliced_imgs.append(sliced_img)
+    return sliced_imgs
+
+
+def draw_bboxes(img: Image.Image, bboxes: list[Bbox], name="annotated_image.png"):
+    curr_work_dir = Path(os.getcwd())
+    log_dir = curr_work_dir / "logs"
+    log_dir.mkdir(exist_ok=True)
+    drawer = ImageDraw.Draw(img)
+    for bbox in bboxes:
+        # Calculate the coordinates for the rectangle to be drawn
+        left = bbox.p.x
+        top = bbox.p.y
+        right = bbox.p.x + bbox.w
+        bottom = bbox.p.y + bbox.h
+
+        # Draw the rectangle on the image
+        drawer.rectangle([left, top, right, bottom], outline="green", width=1)
+
+        # Optionally, add text label if it exists
+        if bbox.label:
+            drawer.text((left, top), bbox.label, fill="blue")
+
+        if bbox.content:
+            drawer.text((left, bottom - 10), bbox.content[:10], fill="red")
+
+    # Save the image with drawn rectangles
+    img.save(log_dir / name)

texteller/utils/device.py

@@ -0,0 +1,41 @@
+from typing import Literal
+
+import torch
+
+
+def str2device(device_str: Literal["cpu", "cuda", "mps"]) -> torch.device:
+    if device_str == "cpu":
+        return torch.device("cpu")
+    elif device_str == "cuda":
+        return torch.device("cuda")
+    elif device_str == "mps":
+        return torch.device("mps")
+    else:
+        raise ValueError(f"Invalid device: {device_str}")
+
+
+def get_device(device_index: int = None) -> torch.device:
+    """
+    Automatically detect the best available device for inference.
+
+    Args:
+        device_index: The index of GPU device to use if multiple are available.
+                      Defaults to None, which uses the first available GPU.
+
+    Returns:
+        torch.device: Selected device for model inference.
+    """
+    if cuda_available():
+        return str2device("cuda")
+    elif mps_available():
+        return str2device("mps")
+    else:
+        return str2device("cpu")
+
+
+def cuda_available() -> bool:
+    return torch.cuda.is_available()
+
+
+def mps_available() -> bool:
+    return torch.backends.mps.is_available()

texteller/utils/image.py

@@ -0,0 +1,121 @@
+from collections import Counter
+from typing import List, Union
+
+import cv2
+import numpy as np
+import torch
+from PIL import Image
+from torchvision.transforms import v2
+
+from texteller.constants import (
+    FIXED_IMG_SIZE,
+    IMG_CHANNELS,
+    IMAGE_MEAN,
+    IMAGE_STD,
+)
+from texteller.logger import get_logger
+
+
+_logger = get_logger()
+
+
+def readimgs(image_paths: list[str]) -> list[np.ndarray]:
+    """
+    Read and preprocess a list of images from their file paths.
+
+    This function reads each image from the provided paths, handles different
+    bit depths (converting 16-bit to 8-bit if necessary), and normalizes color
+    channels to RGB format regardless of the original color space (BGR, BGRA,
+    or grayscale).
+
+    Args:
+        image_paths (list[str]): A list of file paths to the images to be read.
+
+    Returns:
+        list[np.ndarray]: A list of NumPy arrays containing the preprocessed images
+                         in RGB format. Images that could not be read are skipped.
+    """
+    processed_images = []
+    for path in image_paths:
+        image = cv2.imread(path, cv2.IMREAD_UNCHANGED)
+        if image is None:
+            raise ValueError(f"Image at {path} could not be read.")
+        if image.dtype == np.uint16:
+            _logger.warning(f'Converting {path} to 8-bit, image may be lossy.')
+            image = cv2.convertScaleAbs(image, alpha=(255.0 / 65535.0))
+
+        channels = 1 if len(image.shape) == 2 else image.shape[2]
+        if channels == 4:
+            image = cv2.cvtColor(image, cv2.COLOR_BGRA2RGB)
+        elif channels == 1:
+            image = cv2.cvtColor(image, cv2.COLOR_GRAY2RGB)
+        elif channels == 3:
+            image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
+        processed_images.append(image)
+
+    return processed_images
+
+
+def trim_white_border(image: np.ndarray) -> np.ndarray:
+    if len(image.shape) != 3 or image.shape[2] != 3:
+        raise ValueError("Image is not in RGB format or channel is not in third dimension")
+
+    if image.dtype != np.uint8:
+        raise ValueError(f"Image should stored in uint8")
+
+    corners = [tuple(image[0, 0]), tuple(image[0, -1]), tuple(image[-1, 0]), tuple(image[-1, -1])]
+    bg_color = Counter(corners).most_common(1)[0][0]
+    bg_color_np = np.array(bg_color, dtype=np.uint8)
+
+    h, w = image.shape[:2]
+    bg = np.full((h, w, 3), bg_color_np, dtype=np.uint8)
+
+    diff = cv2.absdiff(image, bg)
+    mask = cv2.cvtColor(diff, cv2.COLOR_BGR2GRAY)
+
+    threshold = 15
+    _, diff = cv2.threshold(mask, threshold, 255, cv2.THRESH_BINARY)
+
+    x, y, w, h = cv2.boundingRect(diff)
+
+    trimmed_image = image[y : y + h, x : x + w]
+
+    return trimmed_image
+
+
+def padding(images: List[torch.Tensor], required_size: int) -> List[torch.Tensor]:
+    images = [
+        v2.functional.pad(
+            img, padding=[0, 0, required_size - img.shape[2], required_size - img.shape[1]]
+        )
+        for img in images
+    ]
+    return images
+
+
+def transform(images: List[Union[np.ndarray, Image.Image]]) -> List[torch.Tensor]:
+    general_transform_pipeline = v2.Compose(
+        [
+            v2.ToImage(),
+            v2.ToDtype(torch.uint8, scale=True),
+            v2.Grayscale(),
+            v2.Resize(
+                size=FIXED_IMG_SIZE - 1,
+                interpolation=v2.InterpolationMode.BICUBIC,
+                max_size=FIXED_IMG_SIZE,
+                antialias=True,
+            ),
+            v2.ToDtype(torch.float32, scale=True),  # Normalize expects float input
+            v2.Normalize(mean=[IMAGE_MEAN], std=[IMAGE_STD]),
+        ]
+    )
+
+    assert IMG_CHANNELS == 1, "Only support grayscale images for now"
+    images = [
+        np.array(img.convert('RGB')) if isinstance(img, Image.Image) else img for img in images
+    ]
+    images = [trim_white_border(image) for image in images]
+    images = [general_transform_pipeline(image) for image in images]
+    images = padding(images, FIXED_IMG_SIZE)
+
+    return images

texteller/utils/latex.py

@@ -0,0 +1,128 @@
+import re
+
+
+def _change(input_str, old_inst, new_inst, old_surr_l, old_surr_r, new_surr_l, new_surr_r):
+    result = ""
+    i = 0
+    n = len(input_str)
+
+    while i < n:
+        if input_str[i : i + len(old_inst)] == old_inst:
+            # check if the old_inst is followed by old_surr_l
+            start = i + len(old_inst)
+        else:
+            result += input_str[i]
+            i += 1
+            continue
+
+        if start < n and input_str[start] == old_surr_l:
+            # found an old_inst followed by old_surr_l, now look for the matching old_surr_r
+            count = 1
+            j = start + 1
+            escaped = False
+            while j < n and count > 0:
+                if input_str[j] == '\\' and not escaped:
+                    escaped = True
+                    j += 1
+                    continue
+                if input_str[j] == old_surr_r and not escaped:
+                    count -= 1
+                    if count == 0:
+                        break
+                elif input_str[j] == old_surr_l and not escaped:
+                    count += 1
+                escaped = False
+                j += 1
+
+            if count == 0:
+                assert j < n
+                assert input_str[start] == old_surr_l
+                assert input_str[j] == old_surr_r
+                inner_content = input_str[start + 1 : j]
+                # Replace the content with new pattern
+                result += new_inst + new_surr_l + inner_content + new_surr_r
+                i = j + 1
+                continue
+            else:
+                assert count >= 1
+                assert j == n
+                print("Warning: unbalanced surrogate pair in input string")
+                result += new_inst + new_surr_l
+                i = start + 1
+                continue
+        else:
+            result += input_str[i:start]
+            i = start
+
+    if old_inst != new_inst and (old_inst + old_surr_l) in result:
+        return _change(result, old_inst, new_inst, old_surr_l, old_surr_r, new_surr_l, new_surr_r)
+    else:
+        return result
+
+
+def _find_substring_positions(string, substring):
+    positions = [match.start() for match in re.finditer(re.escape(substring), string)]
+    return positions
+
+
+def change_all(input_str, old_inst, new_inst, old_surr_l, old_surr_r, new_surr_l, new_surr_r):
+    pos = _find_substring_positions(input_str, old_inst + old_surr_l)
+    res = list(input_str)
+    for p in pos[::-1]:
+        res[p:] = list(
+            _change(
+                ''.join(res[p:]), old_inst, new_inst, old_surr_l, old_surr_r, new_surr_l, new_surr_r
+            )
+        )
+    res = ''.join(res)
+    return res
+
+
+def remove_style(input_str: str) -> str:
+    input_str = change_all(input_str, r"\bm", r" ", r"{", r"}", r"", r" ")
+    input_str = change_all(input_str, r"\boldsymbol", r" ", r"{", r"}", r"", r" ")
+    input_str = change_all(input_str, r"\textit", r" ", r"{", r"}", r"", r" ")
+    input_str = change_all(input_str, r"\textbf", r" ", r"{", r"}", r"", r" ")
+    input_str = change_all(input_str, r"\textbf", r" ", r"{", r"}", r"", r" ")
+    input_str = change_all(input_str, r"\mathbf", r" ", r"{", r"}", r"", r" ")
+    output_str = input_str.strip()
+    return output_str
+
+
+def add_newlines(latex_str: str) -> str:
+    """
+    Adds newlines to a LaTeX string based on specific patterns, ensuring no
+    duplicate newlines are added around begin/end environments.
+    - After \\ (if not already followed by newline)
+    - Before \\begin{...} (if not already preceded by newline)
+    - After \\begin{...} (if not already followed by newline)
+    - Before \\end{...} (if not already preceded by newline)
+    - After \\end{...} (if not already followed by newline)
+
+    Args:
+        latex_str: The input LaTeX string.
+
+    Returns:
+        The LaTeX string with added newlines, avoiding duplicates.
+    """
+    processed_str = latex_str
+
+    # 1. Replace whitespace around \begin{...} with \n...\n
+    # \s* matches zero or more whitespace characters (space, tab, newline)
+    # Captures the \begin{...} part in group 1 (\g<1>)
+    processed_str = re.sub(r"\s*(\\begin\{[^}]*\})\s*", r"\n\g<1>\n", processed_str)
+
+    # 2. Replace whitespace around \end{...} with \n...\n
+    # Same logic as for \begin
+    processed_str = re.sub(r"\s*(\\end\{[^}]*\})\s*", r"\n\g<1>\n", processed_str)
+
+    # 3. Add newline after \\ (if not already followed by newline)
+    processed_str = re.sub(r"\\\\(?!\n| )|\\\\ ", r"\\\\\n", processed_str)
+
+    # 4. Cleanup: Collapse multiple consecutive newlines into a single newline.
+    # This handles cases where the replacements above might have created \n\n.
+    processed_str = re.sub(r'\n{2,}', '\n', processed_str)
+
+    # Remove leading/trailing whitespace (including potential single newlines
+    # at the very start/end resulting from the replacements) from the entire result.
+    return processed_str.strip()

texteller/utils/misc.py

@@ -0,0 +1,5 @@
+from textwrap import dedent
+
+
+def lines_dedent(s: str) -> str:
+    return dedent(s).strip()

texteller/utils/path.py

@@ -0,0 +1,52 @@
+from pathlib import Path
+from typing import Literal
+
+from texteller.logger import get_logger
+
+_logger = get_logger(__name__)
+
+
+def resolve_path(path: str | Path) -> str:
+    if isinstance(path, str):
+        path = Path(path)
+    return str(path.expanduser().resolve())
+
+
+def touch(path: str | Path) -> None:
+    if isinstance(path, str):
+        path = Path(path)
+    path.touch(exist_ok=True)
+
+
+def mkdir(path: str | Path) -> None:
+    if isinstance(path, str):
+        path = Path(path)
+    path.mkdir(parents=True, exist_ok=True)
+
+
+def rmfile(path: str | Path) -> None:
+    if isinstance(path, str):
+        path = Path(path)
+    path.unlink(missing_ok=False)
+
+
+def rmdir(path: str | Path, mode: Literal["empty", "recursive"] = "empty") -> None:
+    """Remove a directory.
+
+    Args:
+        path: Path to directory to remove
+        mode: "empty" to only remove empty directories, "all" to recursively remove all contents
+    """
+    if isinstance(path, str):
+        path = Path(path)
+
+    if mode == "empty":
+        path.rmdir()
+        _logger.info(f"Removed empty directory: {path}")
+    elif mode == "recursive":
+        import shutil
+
+        shutil.rmtree(path)
+        _logger.info(f"Recursively removed directory and all contents: {path}")
+    else:
+        raise ValueError(f"Invalid mode: {mode}. Must be 'empty' or 'all'")