mmocr.utils.rescale_bboxes

mmocr.utils.rescale_bboxes(bboxes, scale_factor, mode='mul')

Rescale bboxes according to scale_factor.

The behavior is different depending on the mode. When mode is ‘mul’, the coordinates will be multiplied by scale_factor, which is usually used in preprocessing transforms such as Resize(). The coordinates will be divided by scale_factor if mode is ‘div’. It can be used in postprocessors to recover the bboxes in the original image size.

Parameters

• bboxes (np.ndarray]) – Bounding bboxes in shape (N, 4)

• scale_factor (tuple(int, int)) – (w_scale, h_scale).

• model (str) – Rescale mode. Can be ‘mul’ or ‘div’. Defaults to ‘mul’.

• mode (str) –

Returns

Rescaled bboxes.

Return type

list[np.ndarray]