说明：  数字图像处理：分别实现图像的图象直方图统计、图象的线性变换、图象平滑消噪处理、图象锐化处理、中值滤波处理、伪彩色增强处理、勾边处理、彩色图象处理锐化处理
(Digital image processing: histogram of each image to achieve image statistics, image of linear transformation, image smoothing de-noising processing, image sharpening, median filtering and pseudo-color enhancement processing, Crochet processing, color Like dealing with sharpening)