Between Regions and Objects - Surfaces and Volumes

Several modular processes are used to b u i l d r e l a t i o n s h i p s between a) two-dimensional regions and boundaries in a segmented image, and b) the hypothesized sur faces, volumes and ob jec ts of a three-dimensional wo r ld . A v a r i e t y of bottom-up and top-down s t ra teg ies coordinate the processes of SHAPE, PERSPECTIVE, SHADOW, and OCCLUSION to const ruct these r e l a t i onsh ips in the VISIONS system.