def pos_s_2_bbox(pos, s):
    """
    from center_x,center_y,s to get bbox

    Parameters
    ----------
    pos , x, bbox
    s , int, bbox size

    Return:
        [x_min,y_min,x_max,y_max]
    """
    return [pos[0] - s / 2, pos[1] - s / 2, pos[0] + s / 2, pos[1] + s / 2]
