本源码是对图像进行拉普拉斯锐化（边缘检测），在图像预处理阶段，非常实用的边缘检测代码，更适合于初学者分析与学习-the source of images Laplacian sharpening (edge detection), the image preprocessing stage. very practical edge detection code, it is more suitable for beginners to learn and Analysis