Beyond "local to global" and "global to local"

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In summary, the theory of topological perception has brought a significant challenge to the traditional model of visual perception. Chen's theoretical formulation and experimental evidence forces us to consider the importance of invariance extraction in visual perception. In this regard, it is difficult to over-estimate the contribution of the topological perception theory to our eventual understanding of vision. However, instead of contrasting "local to global" with "global to local", is it possible to consider visual perception as involving both "local to global" and "global to local" processes? Maybe the traditional hierarchical theory favouring local to global processing and Lin Chen's topological theory are not unlike the trichromatic and the opponent theories for colour vision.

Original languageEnglish (US)
Pages (from-to)671-674
Number of pages4
JournalVisual Cognition
Issue number4
StatePublished - May 2005

Bibliographical note

Funding Information:
Preparation of this commentary was supported by a grant from the Human-Centered Computing and Intelligent Systems Program, National Aeronautics and Space Administration, Grant No. NCC 2-1234.

Funding Information:
I am indebted to Hans Geissler for numerous discussions on these and related issues and to Viktor Sarris for clarification of Brecher's contribution to the study of the perceptual moment. Grateful thanks are expressed to Stanislava Antonijević for proofreading this text. The author's work is supported by deutsche Forschungsgemeinschaft project grants EL 248/1 and El 248/2.


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