def _center_to_coco_bbox(bbox):
    """
    from center format
    to (tlx, tly, w, h)
    :param bbox:
    :return:
    """
    tlx = bbox[0] - bbox[2] / 2
    tly = bbox[1] - bbox[3] / 2
    return [(tlx), (tly), (bbox[2]), (bbox[3])]