Chapter

How Does Our Visual System Achieve Shift and Size Invariance?

Laurenz Wiskott

in 23 Problems in Systems Neuroscience

Published in print January 2006 | ISBN: 9780195148220
Published online May 2009 | e-ISBN: 9780199864676 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195148220.003.0016

Series: Computational Neuroscience Series

 How Does Our Visual System Achieve Shift and Size Invariance?

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This chapter begins by summarizing psychophysical and neurophysiological evidence for shift and size invariance and its limitations. It provides a list of constraints from neuroanatomy and physiology that need to be taken into account when developing biologically plausible models. From a computational point of view, there are two basic approaches by which shift and size invariance can be achieved: normalizing the image or extracting invariant features. Models following these two computational approaches are presented and the extent to which they can account for different aspects of the visual system are discussed. Open questions in modeling shift and size invariance in the visual system are addressed.

Keywords: vision; shift invariance; size invariance; visual system

Chapter.  7007 words.  Illustrated.

Subjects: Neuroscience

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