图像处理经典滤波算法实现，包括中值滤波、卷积、Sobel、Canny、Pyramid、Hough变换、轮廓提取、直方图均衡化、小波变换等等可以试验算法效果，用着不错，分享下。-Image processing classical filtering algorithms, including the median filtering, convolution, Sobel, Canny, Pyramid, Hough transform, contour extraction, histogra