Analyzing Gait with Spatiotemporal Surfaces

Sourabh A. Niyogi and Edward H. Adelson

Published in
Workshop on Non-Rigid Motion and Articulated Objects, Austin, TX; November (1994).
Human motions generate characteristic spatiotemporal patterns. We have developed a set of techniques for analyzing the patterns generated by people walking across the field of view. After change detection, the XYT pattern can be fit with a smooth spatiotemporal surface. This surface is approximately periodic, reflecting the periodicity of the gait. The surface can be expressed as a combination of a standard parameterized surface--the canonical walk--and a deviation surface that is specific to the individual walk.