该源代码的功能是用matlab来实现链码提取，内含测试图片及所用的算法源代码。-The source code s function is to use matlab to achieve the chain code extraction, containing pictures and used for testing the algorithm source code.

matlab生成的源码，适合图像处理人员研究及其应用。不明白之处可一起讨论-matlab source code production chain

MATLAB源码：输入图像，对其进行检测边缘后，以N*2维向量的形式输出图像外轮廓的freeman 链码-MATLAB source: input image after it detects edges to form N* 2-dimensional vector output image outer contour freeman chain code