==== notes on volume and surface reconstruction ====

  * 'A Multi-Camera Method for 3D Digitization of Dynamic, Real-World Events' Peter Rander, CMU-RI-TR-98-12
  * 3d optical flow > http://www.ri.cmu.edu/projects/project_333.html
  * vision based object reconstruction > http://www.cv.tu-berlin.de/~ulas/