#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
#include <stdio.h>
using namespace std
;
using namespace cv
;
int main()
{
Mat image
, mask
;
Rect
r1(100, 100, 250, 300);
Mat img1
, img2
, img3
, img4
;
image
= imread("*.jpg");
mask
= Mat
::zeros(image
.size(), CV_8UC1
);
mask(r1
).setTo(255);
img1
= image(r1
);
image
.copyTo(img2
, mask
);原始图image拷贝到目的图img2上
image
.copyTo(img3
);
img3
.setTo(0, mask
);
imshow("Image sequence", image
);
imshow("img1", img1
);
imshow("img2", img2
);
imshow("img3", img3
);
imshow("mask", mask
);
waitKey();
return 0;
}
原图(image)与掩膜(mask)进行与运算后得到了结果图（img2）:
