utils.py 文件源码

def diagonal(_, pos):
    """
    Given an object pixels' positions, return the diagonal length of its
    bound box
    :param _: pixel values (unused)
    :param pos: pixel position (1-D)
    :return: diagonal of bounding box
    """
    xs = np.array([i / SSIZE for i in pos])
    ys = np.array([i % SSIZE for i in pos])
    minx = np.amin(xs)
    miny = np.amin(ys)
    maxx = np.amax(xs)
    maxy = np.amax(ys)
    return compute_line(np.array([minx, miny]), np.array([maxx, maxy]))