Abstract

Uniform circular (wheel) motion and pendular motion are studied as examples of a hypothesized collection of moving-part modules. A moving-part interpretation rule¹ states that given two moving points Rand B in an image, if B can be interpreted as a point on a rigid body moving at constant velocity without rotation in space, and P can be reliably interpreted as the bob of a pendulum or as a point on a wheel attached to the body at a fixed hub point, a visual system should make that interpretation.

© 1986 Optical Society of America