本程序实现对于CT图像的边缘提取算法，如Sobel，Robert，Priwitt，Laplacian，边缘跟踪算法，及射线法的边缘提取。-Implementation of this program for the CT image edge extraction algorithms such as Sobel, Robert, Priwitt, Laplacian, edge tracking algorithm, and the ray method of edge detection.