边沿检测与提取，轮廓跟踪 命令行编译过程如下 vcvars32 rc bmp.rc cl edge.c bmp.res user32.lib gdi32.lib 注意事项： 运行时，文件c:\test.bmp必须存在-Edge detection and extraction, contour tracing the course of the following command-line compiler vcvars32rc bmp.rccl edge.c