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⚡️ Speed up method STrack.to_xyah by 25% #48

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⚡️ Speed up method STrack.to_xyah by 25% #48

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8 changes: 3 additions & 5 deletions supervision/tracker/byte_tracker/single_object_track.py
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Original file line number Diff line number Diff line change
Expand Up @@ -152,13 +152,11 @@ def tlwh_to_xyah(tlwh) -> npt.NDArray[np.float32]:
"""Convert bounding box to format `(center x, center y, aspect ratio,
height)`, where the aspect ratio is `width / height`.
"""
ret = np.asarray(tlwh).copy()
ret[:2] += ret[2:] / 2
ret[2] /= ret[3]
return ret
cx, cy, w, h = tlwh
return np.array([cx + w / 2, cy + h / 2, w / h, h], dtype=np.float32)

def to_xyah(self) -> npt.NDArray[np.float32]:
return self.tlwh_to_xyah(self.tlwh)
return self.tlwh_to_xyah(self._tlwh)

@staticmethod
def tlbr_to_tlwh(tlbr) -> npt.NDArray[np.float32]:
Expand Down