1.图像直方图均衡化教程，实现对图像的对比度这增强处理，便于后续图像分割

2.对图像实现高斯高通滤波，并利用canny算法实现对边缘的提取-1 image histogram equalization tutorial to achieve the image contrast enhancement processing, easy to follow image segmentation

2 to achieve the image of Gauss high pass filter, and the use of Canny algorithm to achieve the edge of the extraction