80 lines
2.9 KiB
Markdown
80 lines
2.9 KiB
Markdown
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---
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title: OCR Accuracy
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description: Understanding TexPixel recognition accuracy and how to get the best results
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slug: ocr-accuracy
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date: 2026-03-25
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tags: [accuracy, tips]
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order: 5
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---
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# OCR Accuracy
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TexPixel achieves industry-leading accuracy on mathematical formula recognition — but accuracy isn't uniform across all input types. This guide explains what affects accuracy and how to maximize it.
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## Accuracy by Formula Type
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| Formula Type | Typical Accuracy |
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|---|---|
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| Printed formulas (textbooks, papers) | 95–99% |
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| Clean handwritten formulas | 88–95% |
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| Scanned documents (300 DPI+) | 93–98% |
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| Photos of whiteboards | 82–92% |
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| Low-resolution images (< 72 DPI) | 60–80% |
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These are approximate ranges. Individual results depend heavily on image quality.
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## Factors That Affect Accuracy
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### Image Quality
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The single biggest factor. A blurry, low-resolution, or poorly lit image will always produce worse results than a clean scan.
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- **Resolution** — 150 DPI or higher is recommended. 300 DPI is ideal for documents.
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- **Contrast** — dark ink on a white background gives the clearest signal to the model.
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- **Sharpness** — avoid motion blur or out-of-focus shots.
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### Formula Complexity
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Simple single-line equations are recognized with near-perfect accuracy. More complex structures may have occasional errors:
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- Multi-line equation systems
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- Large matrices (6×6 or larger)
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- Heavily nested fractions (3+ levels deep)
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- Non-standard notation or custom symbols
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### Handwriting Style
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Printed (typed) formulas outperform handwritten ones, but TexPixel handles handwriting well when:
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- Letters are clearly formed and not connected (print style, not cursive)
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- Variables are written in distinct sizes (clearly different x and × for example)
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- Spacing between symbols is consistent
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### What Reduces Accuracy
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- **Rotated images** — formulas at an angle are harder to parse
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- **Overlapping elements** — crossed-out work, annotations, or arrows near symbols
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- **Pencil on paper** — low contrast; try increasing image brightness/contrast before uploading
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- **Multiple formulas in one image** — crop to the specific formula you need
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- **Decorative fonts** — calligraphic or stylized mathematical writing
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## Improving Results
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If you're getting errors, try these steps in order:
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1. **Increase image resolution** — scan at 300 DPI instead of 150 DPI
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2. **Improve contrast** — use a photo editor to increase brightness and contrast
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3. **Crop tightly** — remove surrounding text and whitespace
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4. **Straighten the image** — correct rotation before uploading
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5. **Re-photograph** — better lighting, closer distance, sharper focus
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## Reporting Errors
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Found a formula type that TexPixel consistently gets wrong? Let us know — accuracy feedback directly improves the model over time.
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Contact us at: [support@texpixel.com](mailto:support@texpixel.com)
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---
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[Upload a formula and test accuracy →](/app)
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