拐角探测 notebook
Dilation and Erosion 膨胀和腐蚀 将白色区域,沿着边进行膨胀和缩小,
2018-08-10 17-03-28屏幕截图.png腐蚀+膨胀=开口 openIng
![2018-08-10 17-15-50屏幕截图.png](https://img.haomeiwen.com/i9755241/f8781596bf0d54c2.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
膨胀+腐蚀=闭口 closIng
2018-08-10 17-15-50屏幕截图.png
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