中文说明：Harris角点检测程序（内附示例图像），利用鼠标在图像上选择提取交点的区域，进行角点提取。程序语言简洁，利于初学者学习。
English Description：
Harris corner detection program (with sample image), using the mouse to select the area of intersection point on the image, corner extraction. The program language is simple and convenient for beginners to learn.