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Parameters
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----------
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bbox : ndarray
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A bounding box in format `(top left x, top left y, width, height)`.
|
candidates : ndarray
|
A matrix of candidate bounding boxes (one per row) in the same format
|
as `bbox`.
|
|
Returns
|
-------
|
ndarray
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The intersection over union in [0, 1] between the `bbox` and each
|
candidate. A higher score means a larger fraction of the `bbox` is
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occluded by the candidate.
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