update() with a real textured frame and CMC enabled runs without error.

CMC enabled but frame=None must not raise and must track normally.

box_iou results stay within [0, 1] (modulo EPS) for random boxes.

ValueError from download_dataset is caught and returns 1.

box_iou returns the expected pairwise IoU matrix for assorted box layouts.

box_ioa returns the expected intersection-over-area matrix.

Aggregated HOTA skews toward the higher-TP sequence.

Best parameters are written to the output JSON file on success.

H with (2,2) shape must raise when the translation column is accessed.

xcycsr_to_xyxy converts a 1-D (cx, cy, scale, aspect) box back to xyxy.

A 1-row 2-D xcycsr input keeps its 2-D shape after conversion.

An empty (0, 4) xcycsr batch returns an empty (0, 4) xyxy batch.

A negative-scale xcycsr decodes with NaN entries (sqrt of negative).

A zero aspect-ratio xcycsr decodes to a non-finite (NaN/Inf) box.

Zero-scale xcycsr decodes with NaN y-coords; x-center is preserved.

xywh_to_xyxy converts a single 1-D (cx, cy, w, h) box to xyxy.

xywh_to_xyxy converts a 2-D batch of (cx, cy, w, h) boxes element-wise.

After 90° rotation, the post-CMC XYXY state must remain a valid box.

CMC.apply_batch and per-track apply_cmc must agree for any 2x2 R on XYXY state.

xyxy_to_xcycsr converts a 1-D xyxy box to (cx, cy, scale, aspect).

A 1-row 2-D xyxy input keeps its 2-D shape after conversion.

An empty (0, 4) xyxy batch returns an empty (0, 4) xcycsr batch.

A zero-height box yields a finite xcycsr (no NaN/Inf) with scale=0.

xyxy_to_xywh converts a single 1-D xyxy box to (cx, cy, w, h).

xyxy_to_xywh converts a 2-D batch of xyxy boxes element-wise.

Velocity entries (state[4:8]) must transform via R only, not R+t.

A degenerate (point) box stays a point under any affine transform.

Convert to dictionary representation. Returns: Dictionary with all metric values.

Convert to dictionary representation. Returns: Dictionary with all metric values.

Run tracking on the uploaded video and return the output path.

All confirmed alive tracks with Kalman-predicted bounding boxes. Exposes every confirmed track (tracker_id != -1) that the tracker st

Deprecated alias for :attr:`tracks`. .. deprecated:: 2.5 Use :attr:`tracks` instead. Will be removed in v3.0.

Update the filter with a new observation. Args: bbox: Bounding box `[x1, y1, x2, y2]` or `None` when no observati

Update state estimate with measurement. If z is None, the state is not updated (prediction only). Args: z: Measurement v

Update tracklet state with a new bounding-box observation. Args: bbox: Bounding box `[x1, y1, x2, y2]`.

Update tracker state with new detections and return tracked objects. Performs Kalman filter prediction, two-stage association using direction

Update tracklet state with a new bounding-box observation. Args: bbox: Bounding box `[x1, y1, x2, y2]`.

Update tracklet with a new observation. In the BoT-SORT flow **only matched tracks** call ``update(bbox)`` with an actual bounding bo

Process a new frame and return the coordinate transformation. The returned transformation converts between: - Absolute coordinates: P

Write a frame to the video file. Initializes writer on first call. Returns: True if write succeeded or path is None, False on fai