Improve detection parsing with safe conversions and error handling

gptoss_wrapper.py

@@ -521,16 +521,33 @@ class GPTOSSWrapper:
 
                 print(f"Grounding DINO found {len(boxes)} detections")
 
-                for box, score, label_idx in zip(boxes, scores, labels):
-                    if score >= threshold:
-                        x1, y1, x2, y2 = box.tolist()
-                        label = text_queries[label_idx] if label_idx < len(text_queries) else "unknown"
+                for i, (box, score, label_info) in enumerate(zip(boxes, scores, labels)):
+                    try:
+                        # Convert score to float safely
+                        score_val = float(score.item() if hasattr(score, 'item') else score)
+
+                        if score_val >= threshold:
+                            # Convert box coordinates safely
+                            if hasattr(box, 'tolist'):
+                                x1, y1, x2, y2 = box.tolist()
+                            else:
+                                x1, y1, x2, y2 = box
+
+                            # Handle label safely
+                            if isinstance(label_info, (int, float)):
+                                label_idx = int(label_info)
+                                label = text_queries[label_idx] if label_idx < len(text_queries) else "unknown"
+                            else:
+                                label = str(label_info)
 
-                        detections.append({
-                            "label": label,
-                            "confidence": float(score),
-                            "bbox": [int(x1), int(y1), int(x2), int(y2)]
-                        })
+                            detections.append({
+                                "label": label,
+                                "confidence": score_val,
+                                "bbox": [int(x1), int(y1), int(x2), int(y2)]
+                            })
+                    except Exception as e:
+                        print(f"Error processing detection {i}: {e}")
+                        continue
 
             return {"detections": detections}