OpenCV实现彩色图片的补色与反色

#include "stdafx.h"
#include <algorithm> 
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
using namespace cv;

int _tmain(int argc, _TCHAR* argv[])
{
    Mat img = imread("cat.jpg");
    Mat dst1,dst2;
    img.copyTo(dst1);
    img.copyTo(dst2);
    int row = img.rows;
    int col = img.cols;
    for (int i = 0; i < row;++i)
    for (int j = 0; j < col; ++j){
        int b = img.at<Vec3b>(i, j)[0];//blue
        int g = img.at<Vec3b>(i, j)[1];//green
        int r = img.at<Vec3b>(i, j)[2];//red
        int maxrgb = max(max(r, g), b);
        int minrgb = min(min(r, g), b);
        dst1.at<Vec3b>(i, j)[0] = maxrgb + minrgb - b;
        dst1.at<Vec3b>(i, j)[1] = maxrgb + minrgb - g;
        dst1.at<Vec3b>(i, j)[2] = maxrgb + minrgb - r;
        dst2.at<Vec3b>(i, j)[0] = 255 - b;
        dst2.at<Vec3b>(i, j)[1] = 255 - g;
        dst2.at<Vec3b>(i, j)[2] = 255 - r;
    }
    imshow("原图" , img );
    imshow("补色", dst1);
    imshow("反色", dst2);
    waitKey();
    return 0;
}