reverted one change

bytetracker/byte_tracker.py

@@ -141,6 +141,13 @@ def tlwh_to_xyah(tlwh):
     def to_xyah(self):
         return self.tlwh_to_xyah(self.tlwh)
 
+    @staticmethod
+    # @jit(nopython=True)
+    def tlbr_to_tlwh(tlbr):
+        ret = np.asarray(tlbr).copy()
+        ret[2:] -= ret[:2]
+        return ret
+
     @staticmethod
     # @jit(nopython=True)
     def tlwh_to_tlbr(tlwh):
@@ -169,6 +176,14 @@ def __init__(self, track_thresh=0.45, track_buffer=25, match_thresh=0.8, frame_r
         self.max_time_lost = self.buffer_size
         self.kalman_filter = KalmanFilter()
 
+    def reset(self):
+        self.tracked_stracks = []  # type: list[STrack]
+        self.lost_stracks = []  # type: list[STrack]
+        self.removed_stracks = []  # type: list[STrack]
+        self.frame_id = 0
+        self.kalman_filter = KalmanFilter()
+        BaseTrack._count = 0
+
     def update(self, dets, frame_id):
         self.frame_id = frame_id
         activated_starcks = []