图像的形态学运算，包括腐蚀，膨胀，开运算和闭运算。图像的边缘提取，包括垂直提取水平提取和斜45度提取。求图像的傅里叶变换，获得图像的频域特性。对图像进行直方图均衡。对频域图像进行滤波。-Image morphology operation, including erosion, dilation, opening operation and closing operation. An edge extraction image, comprising extracting the vertica