PNG OCR Fixture Matrix
Pick PNG fixtures for clean receipt scans, grayscale OCR preprocessing, and image-based extraction smoke tests.
Hoe je deze matrix gebruikt
- Covers clean scan-style PNGs and noisier grayscale OCR inputs.
- Useful for OCR preprocessing, thresholding, and receipt/document parsing workflows.
- Anchored to the image extraction pack and workflow hub.
Open primaire bibliotheek
Deze matrix is gekoppeld aan de PNG-bibliotheekpagina en het manifest.
Fixture-rijen
| Variant | Profile | Testfocus | File | Size | Download |
|---|---|---|---|---|---|
|
Receipt Scan PNG
Good first OCR smoke test for grayscale scan ingestion.
|
Clean scan | Receipt OCR baseline | png_receipt_scan_sample.png |
4.4 KB | Download |
|
OCR-Noise PNG
Targets preprocessing, thresholding, and low-quality scan handling.
|
Noisy scan | Denoising and OCR robustness | png_ocr_noise_sample.png |
42.0 KB | Download |
|
1000x600 PNG
Useful as a non-document control image when comparing OCR routing behavior.
|
Generic image baseline | Simple raster acceptance | png_1000x600_sample_file_21KB.png |
20.1 KB | Download |
Gerelateerde packs
Image Extraction Fixture Pack
Bundle of real PNG, JPEG, TIFF, and scan-style PDF fixtures for OCR, scan ingestion, and document-photo extraction workflows.
image_extraction_fixture_pack.zip · 382.3 KB
Gerelateerde workflows
Image Extraction Fixtures
PNG, JPEG, TIFF, and scan-style PDF fixtures for OCR, document-photo capture, scan preprocessing, and image-based extraction workflows.
Open WorkflowGerelateerde strategische pagina's
Best Format Guides
Use-Case Recommendations
How to Convert
How to Convert PNG to TIFF
How to Convert PNG to WEBP
How to Convert TIFF to PNG
How to Convert WEBP to PNG
Comparisons