能够打开图像文件绘制其直方图，并且实现各种处理 如 线性点运算，灰度拉伸，直方图均衡，直方图匹配等 笔者已经调通！-Be able to open the image file to draw its histogram, and achieve a variety of treatments such as linear point operations, gray stretch, histogram equalization, histogram matching。

实现对图片的灰度处理，canny检测，hough直线变换等预处理-Gray scale processing of the picture, canny detection, hough linear transform pretreatment