用matlab对图像做平滑、锐化处理。对其增强，灰度处理，并获得直方图。-Matlab image smoothing, sharpening processing. Its enhanced gray scale processing, and histogram.

数字图像处理：使用matlab软件，对图像进行锐化、平滑、去噪-Digital Image Processing: Using matlab software for image sharpening, smoothing, de-noising, etc.