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Intrinsic two-dimensional features as textonsWe suggest that intrinsic two-dimensional (i2D) features, computationally defined as the outputs of nonlinear operators that model the activity of end-stopped neurons, play a role in preattentive texture discrimination. We first show that for discriminable textures with identical power spectra the predictions of traditional models depend on the type of nonlinearity and fail for energy measures. We then argue that the concept of intrinsic dimensionality, and the existence of end-stopped neurons, can help us to understand the role of the nonlinearities. Furthermore, we show examples in which models without strong i2D selectivity fail to predict the correct ranking order of perceptual segregation. Our arguments regarding the importance of i2D features resemble the arguments of Julesz and co-workers regarding textons such as terminators and crossings. However, we provide a computational framework that identifies textons with the outputs of nonlinear operators that are selective to i2D features.
Document ID
20040172637
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Barth, E.
(Institut fur Medizinische Psychologie, Munchen, Germany)
Zetzsche, C.
Rentschler, I.
Date Acquired
August 22, 2013
Publication Date
July 1, 1998
Publication Information
Publication: Journal of the Optical Society of America. A, Optics, image science, and vision
Volume: 15
Issue: 7
ISSN: 1084-7529
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other

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