Strength of feature contrast mediates interaction among feature domains

Authors: Meinhardt G.; Persike M.

Source: Spatial Vision, Volume 16, Number 5, 2003 , pp. 459-478(20)

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Abstract:

Traditional theories of texture segregation suggest that elementary visual features are processed in parallel by independent modules at early visual stages. Here we show that, for small feature contrasts and large values evoking perceptual popout, different forms of module interaction exist. While discrimination of highly salient features rests on independent feature specific pathways, information is summed across domains when barely noticeable ones are to be detected in homogeneous textures.

Keywords: Feature contrast; feature synergy; nonlinear summation; Weber fraction.

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156856803322552766

Publication date: 2003-11-01

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