An alternative to conventional techniques for compressing video data of moving objects
is described. The method, known as track-based compression (TBC), detects, associates,
and tracks moving objects between frames, sending only a small chip or ID around the
moving object once the track has been established. The compression ratio achievable
depends on scene content, sensor geometry, the degree to which the background can be
stabilized, and other factors. Preliminary results range from 1,500:1 for oblique sensing
geometries with significant parallax to more than 10,000:1 for near-nadir overhead and
fixed ground-based surveillance video.