这种情况效果比较好
GitHub - Image-Py/imagepy: Image process framework based on plugin like imagej, it is esay to glue with scipy.ndimage, scikit-image, opencv, simpleitk, mayavi...and any libraries based on numpy
这种情况不知道怎么调整?本意是想选出靠里面那条边缘,虽然里面那条的梯度没有外面那条高，但是视觉上能够明显分辨!
