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jedarden ff82fdce90 feat(pdftract-5xyjv): implement 3x3 median-filter denoising for OCR preprocessing 
- Add median_denoise() function using imageproc::filter::median_filter
- 3x3 kernel (radius 1,1) removes salt-and-pepper noise while preserving edges
- Comprehensive tests: noise removal, edge preservation, binary output
- Export median_denoise from ocr::preprocessing module

Closes: pdftract-5xyjv
2026-05-24 16:09:08 -04:00
..
pdftract-cer-diff docs(pdftract-aawrz): add LICENSE-MIT and LICENSE-APACHE files 2026-05-23 10:36:28 -04:00
pdftract-cli feat(pdftract-64p5): implement classify CLI subcommand and --auto flag 2026-05-24 15:16:56 -04:00
pdftract-core feat(pdftract-5xyjv): implement 3x3 median-filter denoising for OCR preprocessing 2026-05-24 16:09:08 -04:00
pdftract-libpdftract feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
pdftract-py feat(pdftract-2nu0s): implement Python SDK contract conformance 2026-05-24 08:55:11 -04:00