PNG OCR Fixture Matrix

Pick PNG fixtures for clean receipt scans, grayscale OCR preprocessing, and image-based extraction smoke tests.

Comment utiliser cette matrice

  • 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.

Ouvrir la bibliotheque principale

Cette matrice est rattachee a la bibliotheque PNG et a son manifeste.

Ouvrir la bibliotheque PNG Ouvrir le manifeste JSON

Lignes de fixtures

Variante Profil Objectif de test Fichier Taille Telecharger
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 Telecharger
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 Telecharger
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 Telecharger

Packs lies

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

Telecharger le pack Ouvrir la page du pack

Flux lies

Image Extraction Fixtures

PNG, JPEG, TIFF, and scan-style PDF fixtures for OCR, document-photo capture, scan preprocessing, and image-based extraction workflows.

Ouvrir le flux

Pages de strategie liees

Guides du meilleur format

Best Image Format for Web Performance Best Image Format for Print Workflows

Recommandations par cas d'usage

Best Format for Transparent UI Assets

Comment convertir

How to Convert PNG to TIFF How to Convert PNG to WEBP How to Convert TIFF to PNG How to Convert WEBP to PNG

Comparaisons

PNG vs WebP TIFF vs PNG