title: 3D rendering in OpenCV
body: <p>I am doing a project on 3D rendering of a scene.  I am using OpenCV. The steps I am doing are like this:</p>
  
  <ol>
  <li>Taking two images of a scene.</li>
  <li>Calculating object correspondence using SURF feature matching.</li>
  <li>Calculating camera fundamental matrix.</li>
  <li>Calculating the Disparity image.</li>
  </ol>
  
  <p>Now I have two questions </p>
  
  <ol>
  <li><p>After calculating fundamental matrix how can I calculate the Q matrix?  (I can't calibrate the camera)</p></li>
  <li><p>How can I render in 3D using opencv or any other library?</p></li>
  </ol>