title: OpenCV: Camera Pose Estimation
body: <p>I try to match two overlapping images captured with a camera. To do this, I'd like to use OpenCV. I already extracted the features with the <code>SurfFeatureDetector</code>. Now I try to to compute the rotation and translation vector between the two images.</p>
  
  <p>As far as I know, I should use <code>cvFindExtrinsicCameraParams2()</code>. Unfortunately, this method require <code>objectPoints</code> as an argument. These <code>objectPoints</code> are the world coordinates of the extracted features. These are not known in the current context.</p>
  
  <p>Can anybody give me a hint how to solve this problem?</p>