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Title

Gradient representation and perception in the early visual system-A novel account of Mach band formation

AuthorsKeil, Matthias S.; Cristóbal, Gabriel CSIC ORCID ; Neumann, H.
Issue Date2006
PublisherElsevier
CitationVision Research 46: 2659-2674 (2006)
AbstractRecent evidence suggests that object surfaces and their properties are represented at early stages in the visual system of primates. Most likely invariant surface properties are extracted to endow primates with robust object recognition capabilities. In real-world scenes, luminance gradients are often superimposed on surfaces. We argue that gradients should also be represented in the visual system, since they encode highly variable information, such as shading, focal blur, and penumbral blur. We present a neuronal architecture which was designed and optimized for segregating and representing luminance gradients in real-world images. Our architecture in addition provides a novel theory for Mach bands, whereby corresponding psychophysical data are predicted consistently. © 2006 Elsevier Ltd. All rights reserved.
URIhttp://hdl.handle.net/10261/67120
DOIhttp://dx.doi.org/10.1016/j.visres.2006.01.038
Identifiersdoi: 10.1016/j.visres.2006.01.038
issn: 0042-6989
Appears in Collections:(CFMAC-IO) Artículos
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