我有一个框架,并希望在specefic位置绘制一个矩形,矩形：
#include "opencv2/opencv.hpp"
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include<conio.h>
int main () {
cv::Mat frame = cv::imread("cmd.png");
cvRectangle(
&frame,cvPoint(5,10),cvPoint(20,30),cvScalar(255,255,255)
);
cv::imshow("test ",frame);
while (cv::waitKey() != 23) ;
return 1;
}
Unhandled exception at 0x000007fefd42caed in OpenCV_capture.exe: Microsoft C++ exception: cv::Exception at memory location 0x0018ead0..
知道为什么我会这样做,我该如何解决它
