Fix mask array type for C++ backend

app.py

@@ -427,16 +427,16 @@ def gradio_estimate(
             editor_mask = np.array(editor_mask)
             if editor_mask.ndim == 3 and editor_mask.shape[2] >= 4:
                 alpha = editor_mask[:, :, 3]
-                mask = (alpha > 0).astype(np.uint8) * 255
+                mask = (alpha > 0).astype(bool)
             elif editor_mask.ndim == 3:
                 gray = cv2.cvtColor(editor_mask, cv2.COLOR_RGB2GRAY)
-                mask = (gray > 0).astype(np.uint8) * 255
+                mask = (gray > 0).astype(bool)
             elif editor_mask.ndim == 2:
-                mask = (editor_mask > 0).astype(np.uint8) * 255
+                mask = (editor_mask > 0).astype(bool)
             else:
                 return "Error: Unsupported editor mask format", query_image, None
 
-            debug_mask = mask
+            debug_mask = (mask.astype(np.uint8) * 255)
 
         # Estimate pose
         result = pose_estimator.estimate_pose(