VS2017 OpenCV "image":找不到标识符

scorpio_yan 2019-02-18 03:31:57

代码如下：编译提示 "image":找不到标识符
请教高手解答。

#include "pch.h"
#include <iostream>
#include<opencv2/core/core.hpp>
#include<opencv2/highgui/highgui.hpp>

using namespace cv;
using namespace std;

int main()
{
//读取两张图片
Mat girl = imread("girl.jpg");
Mat lena = imread("lena.jpg", 199);

//显示两张图片
namedWindow("girl");
imshow("girl", girl);

namedWindow("lena");
imshow("lena",lena);

//定义一个Mat类型，用于存放，图像的ROI
Mat imageROI;
//方法一
imageROI = image(Rect(800, 350, lena.cols, lena.rows));
//方法二
//imageROI = image(Range(350, 350 + lena.rows), Range(800, 800 + lena.cols));

waitKey();

return 0;
}

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