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The case with only one small island is not covered #561

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The case with only one small island is not covered #561

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2 changes: 1 addition & 1 deletion sam2/utils/amg.py
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Original file line number Diff line number Diff line change
Expand Up @@ -281,7 +281,7 @@ def remove_small_regions(
n_labels, regions, stats, _ = cv2.connectedComponentsWithStats(working_mask, 8)
sizes = stats[:, -1][1:] # Row 0 is background label
small_regions = [i + 1 for i, s in enumerate(sizes) if s < area_thresh]
if len(small_regions) == 0:
if len(small_regions) <= 1:
return mask, False
fill_labels = [0] + small_regions
if not correct_holes:
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