opencv实现彩色图片的补色与反色

#include "stdafx.h"
#include  
#include 
#include 
#include 
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;
}