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Chris Tsang
1c3f9fb16e
good_min_area = 0 disabled visioncortex's thread-like rejection (which was gated on good_min_area > 0). Reintroduce it in our repo as a finish-phase step: Segmentation::filter_thin drops regions whose perimeter >= area (average thickness under ~2px), using the same Shape::image_boundary_list metric so the heuristic matches. It's toggleable on a cached segmentation (Config::filter_thin, on by default), unlike the clustering-time version. Exposed via CLI --keep-thin, Python filter_thin, and Node filterThin. Adds RegionMask::perimeter/is_thin and a reuse test toggling it on one cached segmentation. Clean-image goldens are unaffected (large regions aren't thin).