Note: tracker.1 works using background subtraction. Click the [reset] button to set the background scene.
All the videos drop artifacts of the moving objects from time to time and these become part of the scene. Jim speculates that the “debris” comes from a mismatch between the original creation and the default playback frame rate. The artifacts occur both in QuickTime and in GEM.
The tracker does get confused by the artifacts, so we need a way to eliminate them.
It appears that more unified object colors might help in tracking. We want to be able to handle dynamic objects, but for this version of the tracker it looks like we need less dynamism. If that's word ;^).