Commit Graph

3 Commits

Author SHA1 Message Date
Jirka Borovec f7b63f149a
perf(cv2): simplify fallback operations (#2441)
- Remove unused compatibility operations and use focused Pillow and NumPy paths to reduce maintained fallback code.
- Preserve numerical decisions and hot-path performance with exact regression coverage and bounded algorithms.
- Preserve INTER_LINEAR uint8 reductions within one LSB while retaining the resize performance budget and numeric RGBA handling.
- Restore repeated-endpoint contour anchors and bound cross-platform chamfer coefficient drift in regression tests.

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Co-authored-by: Codex <codex@openai.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
2026-07-17 17:31:57 +02:00
Jirka Borovec 68e63f9e39
refactor(cv2): replace Hershey text with Pillow (#2440)
Text fallback now renders through Pillow with the DejaVu Sans face
resolved via matplotlib font_manager, replacing the Hershey stroke-font
reader; getTextSize metrics derive from the same font and differ from
OpenCV within the documented visual-divergence tier.

Remove the packaged Hershey glyph data (hershey_fonts.json, provenance,
license) and its _cv2/data package-data entry.

Delete unused fallbacks: _geometry _fill_poly and _point_in_polygon
(live fillPoly is the Pillow one in _drawing) and _common _unavailable.

Replace test_hershey with Pillow-oriented test_text, drop test_common,
and point test_contours/test_geometry at _drawing._fill_poly. Document
the fallback text-backend change in the changelog.

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Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>
2026-07-17 10:22:32 +02:00
Jirka Borovec 7096ee911c
feat(cv2): add geometry fallbacks (#2432)
- Added geometry fallbacks for OpenCV-dependent operations, including connected-component processing.
- Fixed contour hierarchy detection for concave shapes by reliably selecting an interior point.
- Improved contour hierarchy remapping performance for large contour sets.

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Co-authored-by: Codex <codex@openai.com>
Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>
2026-07-16 00:54:57 +02:00