matlab m文件运用5种不同的梯度增强法进行图像锐化和图像的高通滤波和掩模处理-matlab m files using five different gradient method for image enhancement and image sharpening high-pass filter and mask handling

图像灰度变换、图像的锐化、⑴直方图均衡化（histogram equalization），⑵直方图匹配（histogram matching），⑶邻域平均（neighborhood averaging），⑷局域增强（local enhancement）， ⑸中值滤波（median filtering）。源码-Image gray-scale transformation, image sharpening, ⑴ histogram equalization (histogram equaliza