utils.py 文件源码

def convert_to_square(bbox):
    """Convert bbox to square

    Parameters:
    ----------
    bbox: numpy array , shape n x 5
        input bbox

    Returns:
    -------
    square bbox
    """
    square_bbox = bbox.copy()

    h = bbox[:, 3] - bbox[:, 1] + 1
    w = bbox[:, 2] - bbox[:, 0] + 1
    max_side = np.maximum(h,w)
    square_bbox[:, 0] = bbox[:, 0] + w*0.5 - max_side*0.5
    square_bbox[:, 1] = bbox[:, 1] + h*0.5 - max_side*0.5
    square_bbox[:, 2] = square_bbox[:, 0] + max_side - 1
    square_bbox[:, 3] = square_bbox[:, 1] + max_side - 1
    return square_bbox