Fix: IndexError in ByteTracker

utils/tracker.py

@@ -445,15 +445,14 @@ class ByteTracker:
 
         # 4. Init new tracks from unmatched high score detections
         # Note: Unmatched low score detections are ignored (noise)
-        detections = [detections[i] for i in u_detection]
-        for inew in u_detection:
-            track = detections[inew]
+        unmatched_dets = [detections[i] for i in u_detection]
+        for track in unmatched_dets:
             if track.score < self.track_thresh:
                 continue
-                
+
             track.activate(self.kalman_filter, self.frame_id)
             activated_stracks.append(track)
-            self._sync_data(track, track) # Sync self
+            self._sync_data(track, track)  # Sync self
 
         # 5. Update state
         self.tracked_stracks = [t for t in self.tracked_stracks if t.state == 2]