Results

Object Tracking

Block Phase Shifting

Limitations

As a test of the limits of our algorithms, we examined various MPEG videos. Bad MPEGs (ones that break our algorithms) could have any of the following properties:

  • Large regions of un-textured, uniform areas — this leads to erratic motion vectors
  • Global camera motion — this will add motion vectors to everything in the picture, but they will not be uniform and are difficult to remove
  • Moving objects smaller than the macroblock level
  • Excessive noise

    • This is an example of a video that breaks our algorithms: ts.mpeg. Because the video pans out and the similar textures in the wall, the motion vectors are too erratic.
    Overview Methods Results
    Conclusions References Members