可以实现至少八位图的灰度变换，均衡化，规格化，直方图显示，均值滤波，做大值滤波，中值滤波，添加椒盐噪音，脉冲噪音-Can be achieved at least eight gray-scale transformation, equalization, normalization, histogram display, mean filter, bigger and median filtering, median filtering, add salt and pepper noise,