Computational modelling of non-Fourier motion: further evidence for a single
luminance based mechanism.
C.P. Benton, A. Johnston, P.W. McOwan, and J.D. Victor
J. Opt. Soc. Amer. A18, 2204-2208 (2001)
Abstract
It is generally assumed that the preception of non-Fourier motion requires
the operation of some nonlinearity before motion analysis. We apply a computational
model of biological motion processing to
a class of non-Fourier motion
stimuli designed to investigate nonlinearity in human visual processing.
The model correctly detects direction of motion in these non-Fourier stimuli
without recourse to any preprocessing nonlinearity. This demonstrates that
the non-Fourier motion in some non-Fourier stimuli is directly available
to luminance-based motion mechanisms operating on measurements of local
spatial and temporal gradients.
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