CODEWITHSUNDEEP
c++opencv
MatPas
MatPas

Reputation: 1

Picture and text on video capture

I would like to put an image on video and i'm wondering if it's possible in opencv without multithreading. I would like to avoid it because in my project i am operating on RPI 0W(that's whyi don't want multithreading) . i can't find anything about it on internet. I got some basic code in c++ . I'm new to open cv.

      int main(){
VideoCapture cap(0);
if (!cap.isOpened())
{
    cout << "error"<<endl;
    return -1;
}
Mat edges;
namedWindow("edges", 1);
Mat img = imread("logo.png");
   for (;;)
{
    Mat frame;
    cap >> frame; // get a new frame from camera
    imshow("edges", WINDOW_AUTOSIZE );
        imshow("edges", img);
    imshow("edges", frame);
    if (waitKey(30) >= 0) break;
 }
}

Upvotes: 0

Views: 169

Answers (1)

pankaj Kang
pankaj Kang

Reputation: 131

In OpenCV showing two things in the same window overwrites the previous one which I think is happening in your case. You can use OpenCV addWeighted() function or bitwise operations. OpenCV has good documentation on this. You can find it here

Upvotes: 1

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