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#include <opencv2/core.hpp>

#include <opencv2/highgui.hpp>

#include <iostream>

int main(int argc, const char* argv[]){

cv::Mat img = cv::imread("imori.jpg", cv::IMREAD_COLOR);

int width = img.rows;

int height = img.cols;

cv::Mat img2 = img.clone();

//cv::Mat disp(cv::Size(height, width*2+10), CV_8UC3, cv::Scalar(0,0,0));

int i = 0, j = 0;

for(i=0; i<width/2; i++){

for(j=0; j<height/2; j++){

img.at<cv::Vec3b>(j, i)[0] = 0;

img.at<cv::Vec3b>(j, i)[1] = 400;

img.at<cv::Vec3b>(j, i)[2] = -200;

}

}

cv::Mat disp;

cv::Mat tmp[3];

tmp[0] = img;

tmp[1] = cv::Mat (cv::Size(10, height), CV_8UC3, cv::Scalar(0,0,0));

tmp[2] = img2;

cv::hconcat(tmp, 3, disp);

cv::imshow("sample", disp);

cv::waitKey(0);

cv::destroyAllWindows();

cv::imwrite("out.jpg", disp);

return 0;

}