用Hough变换检测线段。这是一个命令行程序，以图像作为文件输入变量。编译时选择“#if1”或者“#if0”，可以使用标准和概率Hough变换两种方法-Detection of line segments with Hough transform. This is a command line program to the image as a file input variables. Compile-time options " # if1" or " # if0&