用canny算子提取图像边缘,作为一种基础的边缘提取，为后续的图像处理出铺垫-Using canny edge extraction

其功能是实现对图象用Canny算子提取图象边缘,其中包含原始结果以及C代码,-Its function is to realize the image Canny operator was used to extract image edges, which contains the original results and C code,