opencv 图像增强

    Mat src= imread( "D:\\OCR\\Debug\\Temp\\Rects\\wholeMat_00191_0_0.jpg");

    Mat dest;

    Mat kern = (Mat_<char>(,) << , - ,,

        -, , -,

        , -, );

    filter2D(src,dest,src.depth(),kern);

    imshow("src",src);

    imshow("dest",dest);

    imwrite("D:\\dest.jpg",dest);

    waitKey();

可以实现图像增强，处理过后图像大小增大30%