Reference for ultralytics/trackers/byte_tracker.py
Note
Full source code for this file is available at https://github.com/ultralytics/ultralytics/blob/main/ultralytics/trackers/byte_tracker.py. Help us fix any issues you see by submitting a Pull Request 🛠️. Thank you 🙏!
ultralytics.trackers.byte_tracker.STrack
Bases: BaseTrack
Source code in ultralytics/trackers/byte_tracker.py
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tlbr
property
Convert bounding box to format (min x, min y, max x, max y)
, i.e.,
(top left, bottom right)
.
tlwh
property
Get current position in bounding box format (top left x, top left y,
width, height)
.
__init__(tlwh, score, cls)
wait activate.
Source code in ultralytics/trackers/byte_tracker.py
__repr__()
Return a string representation of the BYTETracker object with start and end frames and track ID.
activate(kalman_filter, frame_id)
Start a new tracklet.
Source code in ultralytics/trackers/byte_tracker.py
convert_coords(tlwh)
Convert a bounding box's top-left-width-height format to its x-y-angle-height equivalent.
multi_gmc(stracks, H=np.eye(2, 3))
staticmethod
Update state tracks positions and covariances using a homography matrix.
Source code in ultralytics/trackers/byte_tracker.py
multi_predict(stracks)
staticmethod
Perform multi-object predictive tracking using Kalman filter for given stracks.
Source code in ultralytics/trackers/byte_tracker.py
predict()
Predicts mean and covariance using Kalman filter.
Source code in ultralytics/trackers/byte_tracker.py
re_activate(new_track, frame_id, new_id=False)
Reactivates a previously lost track with a new detection.
Source code in ultralytics/trackers/byte_tracker.py
tlbr_to_tlwh(tlbr)
staticmethod
Converts top-left bottom-right format to top-left width height format.
tlwh_to_tlbr(tlwh)
staticmethod
tlwh_to_xyah(tlwh)
staticmethod
Convert bounding box to format (center x, center y, aspect ratio,
height)
, where the aspect ratio is width / height
.
Source code in ultralytics/trackers/byte_tracker.py
update(new_track, frame_id)
Update a matched track :type new_track: STrack :type frame_id: int :return:
Source code in ultralytics/trackers/byte_tracker.py
ultralytics.trackers.byte_tracker.BYTETracker
Source code in ultralytics/trackers/byte_tracker.py
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__init__(args, frame_rate=30)
Initialize a YOLOv8 object to track objects with given arguments and frame rate.
Source code in ultralytics/trackers/byte_tracker.py
get_dists(tracks, detections)
Calculates the distance between tracks and detections using IOU and fuses scores.
Source code in ultralytics/trackers/byte_tracker.py
get_kalmanfilter()
init_track(dets, scores, cls, img=None)
Initialize object tracking with detections and scores using STrack algorithm.
Source code in ultralytics/trackers/byte_tracker.py
joint_stracks(tlista, tlistb)
staticmethod
Combine two lists of stracks into a single one.
Source code in ultralytics/trackers/byte_tracker.py
multi_predict(tracks)
remove_duplicate_stracks(stracksa, stracksb)
staticmethod
Remove duplicate stracks with non-maximum IOU distance.
Source code in ultralytics/trackers/byte_tracker.py
reset_id()
sub_stracks(tlista, tlistb)
staticmethod
DEPRECATED CODE in https://github.com/ultralytics/ultralytics/pull/1890/ stracks = {t.track_id: t for t in tlista} for t in tlistb: tid = t.track_id if stracks.get(tid, 0): del stracks[tid] return list(stracks.values())
Source code in ultralytics/trackers/byte_tracker.py
update(results, img=None)
Updates object tracker with new detections and returns tracked object bounding boxes.
Source code in ultralytics/trackers/byte_tracker.py
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