Contextual modulation via low-level vision processing

Authors:
Phillip Sheridan;Barry Thornton
Affiliations:
School of Information and Communication Technology, Griffith University, University Drive, Meadowbrook, Qld, Australia;Department of Mathematics, University of Technology Sydney, Sydney, NSW, Australia and School of Physics, University of Sydney, Sydney, NSW, Australia
Venue:
Image and Vision Computing
Year:
2012

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Abstract

Gabor wavelets are well established as being useful for modeling neuronal response properties of the primary visual cortex. However, current Gabor models do not account for long-range contextual modulation. This paper introduces a new model which extends a state-of-the-art model of contextual modulation by incorporating long-range convolution at the scale of the visual field. The significance of this new mechanism is that it accounts for perceptual filling-in of occluded receptive fields with purely low-level vision processing.