PNG OCR Fixture Matrix

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

Como usar esta matriz

  • 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.

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Esta matriz esta ancorada na pagina da biblioteca PNG e em seu manifesto.

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Linhas de fixtures

Variante Perfil Foco do teste Arquivo Tamanho Baixar
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 Baixar
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 Baixar
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 Baixar

Pacotes relacionados

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

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Fluxos relacionados

Image Extraction Fixtures

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

Abrir fluxo

Paginas de estrategia relacionadas

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

Guias por caso de uso

Best Format for Transparent UI Assets

Guias de conversao

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

Comparacoes lado a lado

PNG vs WebP TIFF vs PNG