Videos: Flow Lookup and Biological Motion Perception

This page contains video to supplement the paper Flow Lookup and Biological Motion Perception, accepted to the International Conference on Image Processing 2005.  For clarity, time has been slowed down in these videos. All videos use MPEG-4 compression. For convenience, you can also download a zip file containing all the video clips (14.4 MB).

Contents

  1. Figure 1: CircleWalk
  2. Figure 2: Dancer
  3. Figure 3: Moving Point Display: Walking from the Side
  4. Additional Figure: Moving Point Display: Walking from the Rear

Figure 1: CircleWalk

Improved tracking of CircleWalk clip (closeup). The silhouette-based tracker loses the legs in frames 50-80, but the flow-based tracker does not.

Silhouette LookupObservationFlow Lookup

Figure 2: Dancer

Improved tracking of Dancer clip (closeup). The flow-based tracker correctly identifies the direction of rotation.

Silhouette LookupObservationFlow Lookup

Figure 3: Moving Point Display: Walking from the Side

Reconstruction of biological motion from point displays: Sideways walking.

InputResult

Additional Figure: Moving Point Display: Walking from the Rear

Reconstruction of biological motion from point displays: Walking seen from behind. Note how closely the inferred side view matches Figure 3, with the exception of the right/left ambiguity.

InputResultSide View (Inferred)