A role for contrast-normalisation in second-order motion perception.

Christopher P Benton

doi:10.1016/j.visres.2003.08.016

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A role for contrast-normalisation in second-order motion perception.

Christopher P Benton

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Abstract

Two low-level motion models are applied to a second-order stimulus, a translating contrast modulation of static binary noise. Both models have been used to demonstrate equivalence between energy and gradient algorithms and can be split into a motion-opponent stage followed by a contrast-normalised stage. Analysis of results shows no directional bias at the motion-opponent stage but a strong bias, indicating the correct direction of second-order motion, at the contrast-normalised stage. This demonstrates that the intrinsically non-linear process of contrast-normalisation may play a part in the detection of second-order motion.

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Algorithms Contrast Sensitivity Differential Threshold Humans Models, Psychological Motion Perception Pattern Recognition, Visual Research Design Journal Article

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Christopher P Benton. 2004. A role for contrast-normalisation in second-order motion perception.. https://doi.org/10.1016/j.visres.2003.08.016

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