Event Abstract

The Conjoint Effect of Divisive Normalization and Orientation Selectivity on Redundancy Reduction in Natural Images

  • 1 Max Planck Institute for Biological Cybernetics, Germany

Bandpass filtering, orientation selectivity, and contrast gain control are prominent features of sensory coding at the level of V1 simple cells. While the effect of bandpass filtering and orientation selectivity can be assessed within a linear model, contrast gain control is an inherently nonlinear computation. Here we employ the class of elliptically contoured distributions to investigate the extent to which the two features---orientation selectivity and contrast gain control---are suited to model the statistics of natural images. Within this framework we find that contrast gain control can play a significant role for the removal of redundancies in natural images. Orientation selectivity, in contrast, has only a very limited potential for redundancy reduction.

Conference: Bernstein Symposium 2008, Munich, Germany, 8 Oct - 10 Oct, 2008.

Presentation Type: Poster Presentation

Topic: All Abstracts

Citation: Sinz F and Bethge M (2008). The Conjoint Effect of Divisive Normalization and Orientation Selectivity on Redundancy Reduction in Natural Images. Front. Comput. Neurosci. Conference Abstract: Bernstein Symposium 2008. doi: 10.3389/conf.neuro.10.2008.01.116

Received: 18 Nov 2008; Published Online: 18 Nov 2008.

* Correspondence: Fabian Sinz, Max Planck Institute for Biological Cybernetics, Tübingen, Germany, nemoABS01@frontiersin.org

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