title: OpenCV capturing desktop screen live
body: <p>I'm using OpenCV for a c++ coding project. I'm having some difficulty with some of the limitations in OpenCV, I want to analyse a video file and detect certain objects. This works perfectly, but now I want it to analyse a section of my desktop screen. (live)</p>
  
  <p>Does anybody have a clue how to accomplish this? I thought of making a webcam simulator that captures my desktop screen but I think thats way to complicated and it should be much more easy.</p>