PNG OCR Fixture Matrix

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

So verwenden Sie diese Matrix

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.

Primaerbibliothek oeffnen

Diese Matrix ist an die PNG-Bibliothek und deren Manifest gebunden.

PNG-Bibliothek oeffnen Manifest JSON oeffnen

Fixture-Zeilen

Variante	Profil	Testfokus	Datei	Groesse	Herunterladen
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	Herunterladen
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	Herunterladen
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	Herunterladen

Verwandte Pakete

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

Paket herunterladen Paketseite oeffnen

Verwandte Workflows

Image Extraction Fixtures

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

Workflow oeffnen

Verwandte Strategie-Seiten

Beste-Format-Guides

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

Use-Case-Guides

Best Format for Transparent UI Assets

Konvertierungs-Guides

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

Direkte Vergleiche

PNG vs WebP TIFF vs PNG