title: Finding origin pixel of image in OpenCV
body: <p>In python openCV I am trying to create a GUI where the user has to pick pixels at set y coordinates. I can get the openCV pixel location that I want to set the mouse to, but I have no way of tying that to the overall system pixel which is needed for the win32api.SetCursorPos(). I have tried moving the image window with cv2.moveWindow('label', x, y) and then offsetting the cursor by y+offset, but this is a very inexact solution. <strong>Is there any way to find the current system pixel where the image origin pixel resides?</strong>  </p>