Title: Perceptual Grouping of Metastable Objects

Speaker: Allan Dobbins,
Vision Science Research Center & Dept. of Biomedical Engineering, UAB

When/where: Thursday, March 4th, 12:30-1:45PM, Room 500 AKW

Abstract:

Arrays of ambiguous objects often appear to group into a single
interpretation. Examples include Attneave's triangles and the dynamic
quartet arrays of Ramachandran and Anstis. However there are other
displays in which grouping fails. A theory of perceptual grouping
should explain when grouping occurs and when it does not. In a variety
of displays we find that which interpretations are seen, or whether
grouping occurs at all, depends on whether the objects can be assigned
values consistent with a single viewer position or
motion. In this talk I will describe experiments bearing on the
hypothesis that perceptual grouping depends on the generation of a scene
model. I will also describe high level aftereffects that hold some
promise of shedding light on the architecture of scene understanding. t
does not. In a variety of displays we find that which interpretations
are seen, or whether grouping occurs at all, depends on whether the
objects can be assigned values consistent with a single viewer position
or motion. In this talk I will describe experiments bearing on the
hypothesis that perceptual grouping depends on the generation
of a scene model. I will also describe high level aftereffects that hold
some promise of shedding light on the architecture of scene
understanding.

Pizza will be served.

Host: S.W. Zucker