opencv---感兴趣区域（ROI）

#include "stdafx.h"
#include <opencv.hpp>
using namespace cv;


int _tmain(int argc, _TCHAR* argv[])
{
	Mat srcImage1 = imread("pens.bmp",IMREAD_UNCHANGED);
	if (!srcImage1.data)
	{
		printf("Load Image Failed.\n");
		return -1;
	}

	Mat srcImage2;
	srcImage2.create(Size(200,200),CV_8UC3);
	srcImage2 = Scalar(100,25,225);

	//定义Mat类型，并给其设置srcImage1的ROI区域
	Mat imageROI = srcImage1(Rect(100,150,srcImage2.cols,srcImage2.rows));

	Mat_<Vec3b>::iterator it1 = srcImage2.begin<Vec3b>();
	Mat_<Vec3b>::iterator it1end = srcImage2.end<Vec3b>();

	Mat_<Vec3b>::iterator it = imageROI.begin<Vec3b>();
	Mat_<Vec3b>::iterator itend = imageROI.end<Vec3b>();

	for (;it != itend,it1 != it1end;++it,++it1)
	{
		(*it)[0] = (*it1)[0];
		(*it)[1] = (*it1)[1];
		(*it)[2] = (*it1)[2];
	}

	namedWindow("测试窗口");
	imshow("测试窗口",srcImage1);


	waitKey(0);
	return 0;
}