在导入的视频上运行Camshift演示

Question

I'm trying to use the camshift algorithm to track the path of a colour invariant circle from a prerecorded video. I tried using the demo code found at https://github.com/Itseez/opencv/blob/master/samples/cpp/camshiftdemo.cpp but I'm trying to load a prerecorded video as my I keep getting an error asking me to insert a camera.

I modified the following line

VideoCapture cap;
Mat frame;

to

VideoCapture cap("C:/Users/samplefile.mov");

and then

cap.read(frame);

This method works for just importing a video but for the life of me, I can't get it to work with the demo. Am I doing it wrong?

PS Are there any other methods you could suggest to draw the bar path of a given circle in a video within a region of interest? My main motivation for using the camshift algorithm is the fact that a user can simply just choose an area to work with.

Answer 1

Solved it. There was an extra line

cap.open(camNum)

I missed this.