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The Role of Knowledge in Visual Shape Representation

Author(s)
Saund, Eric
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Abstract
This report shows how knowledge about the visual world can be built into a shape representation in the form of a descriptive vocabulary making explicit the important geometrical relationships comprising objects' shapes. Two computational tools are offered: (1) Shapestokens are placed on a Scale-Space Blackboard, (2) Dimensionality-reduction captures deformation classes in configurations of tokens. Knowledge lies in the token types and deformation classes tailored to the constraints and regularities ofparticular shape worlds. A hierarchical shape vocabulary has been implemented supporting several later visual tasks in the two-dimensional shape domain of the dorsal fins of fishes.
Date issued
1988-10-01
URI
http://hdl.handle.net/1721.1/6833
Other identifiers
AITR-1092
Series/Report no.
AITR-1092
Keywords
shape representation, dimensionality-reduction, knowledge, sscale-space, later vision

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