编程实现LoG或Sobel算子，并利用该算子提取给定图像中的边缘；全局最优阀值和自适应阀值分割的工作原理，编程实现阀值分割算法。 -Programming LoG or Sobel operator, and using the edge of the operator to extract a given image　global optimal threshold and adaptive threshold segmentation of the working principle of programming to achieve a threshold segmentation algorithm.