数字图像处理的源码。包含图像边缘检测，图像高斯滤波，拉拉普拉斯变换，直方图均衡等。 可直接使用。 已通过测试。 -Source of digital image processing. Containing the image edge detection, image Gaussian filter, Lara Plath transformation, histogram equalization. Can be used directly. Has been tested.