trying to use usb webcam with opencv

[Bernstern]

Hello,

My team has been trying to use the Tower tracker program to little avail, but our hardest challenge is using our Microsoft webcam as the vision input. I checked out mjpeg streamer but couldn't understand it and have gotten no where with it. Any help would be greatly appreciated/

[Noviv]

My team isn't using the Tower Tracker program, so I can't help you with that, sorry.

But, if you are using OpenCV in C/C++, all you should have to do is declare a new VideoCapture and use the Mat that you get from the device. You can then play around with the Mat using OpenCV functions (just google what you want to do).

#include "opencv2/opencv.hpp"

int main() {
    VideoCapture cap(0);
    Mat frame;

    namedWindow("Webcam");

    while (true) {
        cap >> frame;

        //opencv functions go here

        imshow("Webcam", frame);
        if (waitKey(30) >= 0) {
            break;
        }
    }

    cap.release();
}

If you have another webcam on the computer/device you are running this program on, just increase 0 to 1, 2, etc until you get the right device.