Increase threshold to 50% of the garbage msk to lies on water

app.py

@@ -469,7 +469,7 @@ def _pipeline(uid,img_path):
         box_mask = movable_mask[y1:y2, x1:x2]              # ← switch to movable_mask
         if box_mask.size == 0:
             continue
-        if np.count_nonzero(box_mask) / box_mask.size >= 0.2:
+        if np.count_nonzero(box_mask) / box_mask.size >= 0.5:
             centres.append([int((x1 + x2) / 2), int((y1 + y2) / 2)])
     # add chunk centres and deduplicate
     centres.extend(chunk_centres)