Both step edgedetection and ridge edge detection were discussed.

 
  • 基于无限对称指数滤波器(ISEF)的沈俊算子是阶跃边缘检测一阶最佳算子的定常系数特例,且易于递推实现和便于调整参数,因此,采用沈俊算子进行阶跃边缘的检测。
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