title: OpenCV StereoRectifyUncalibrated to 3D Point Cloud
body: <p>I have some code that works out all of the parts up to calculating values with cv::stereoRectifyUncalibrated. However, I am not sure where to go from there to get a 3D Point cloud from it.</p>
  
  <p>I have code that works with the calibrated version that gives me a Q matrix and I then use that with reprojectImageTo3D and StereoBM to give me a point cloud.</p>
  
  <p>I want to compare the results of the two different methods as sometimes I will not be able to calibrate the camera.</p>