im a beginner of opencv. plz help me
i've just installed opencv 3.3 ver and visual studio 17
whenever i run this code
include "cv.hpp"
include "iostream"
using namespace std; using namespace cv;
int main() {
Mat img;
img = imread("lena.png", 1);
if (img.empty())
return -1;
imshow("img", img);
waitKey();
return 0;
}
a gary window advent but disappear without displaying lena.png.
i read others' code. some write namedWindow. others don't
but their results are same.
what is problem?? code ?? or settings?