    def _clip_pad(tensor, pad_shape):
        """
        Clip boxes of the pad area.
        :param tensor: [n, c, H, W]
        :param pad_shape: [h, w]
        :return: [n, c, h, w]
        """
        H, W = tensor.shape[2:]
        h, w = pad_shape

        if h < H or w < W:
            tensor = tensor[:, :, :h, :w].copy()

        return tensor
Clip boxes of the pad area.
:param tensor: [n, c, H, W]
:param pad_shape: [h, w]
:return: [n, c, h, w]
tests/unittest/ops/test_proposal.py