Filter speckle noise from the segmentation dropout-fill

The rescue floored alpha with BiRefNet's soft mask verbatim, which sprinkled ~800 isolated <10px specks (burrs) across the matte from the mask's scattered low-confidence noise. Drop rescued connected components below a min area, keeping only the connected wisp structures. On TestImage2 the rescued components fall from 900 (818 isolated specks) to 91 and the added pixels from 5124 to 1886 -- the genuine wisp strands stay, the burrs go. smoke still passes. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-30 23:29:14 +08:00
parent b0a634dfd4
commit 26b0bc8388
3 changed files with 8 additions and 0 deletions
@@ -48,6 +48,7 @@ class AlphaPostSettings:
    seg_fill_alpha_max: float = 0.10
    seg_fill_seg_min: float = 0.10
    seg_fill_strength: float = 0.70
+    seg_fill_min_area_ratio: float = 0.00002  # drop rescued specks below this area


@dataclass(frozen=True)