12 February 2007 Influence of motion on contrast perception: supra-threshold spatio-velocity measurements
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In this paper, a supra-threshold spatio-velocity CSF experiment is described. It consists in a contrast matching task with a methods of limits procedure. Results enable the determination of contrast perception functions which give, for given spatial and temporal frequencies, the perceived contrast of a moving stimulus. These contrast perception functions are then used to construct supra-threshold spatio-velocity CSF. As for supra-threshold CSF in spatial domain, it can be observed that CSF shape changes from band-pass behaviour at threshold to low-pass behaviour at supra-threshold, along spatial frequencies. However, supra-threshold CSFs have a band-pass behaviour along temporal frequency has threshold one. This means that if spatial variations can be neglected above the visibility threshold, temporal ones are still of primary importance.
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Sylvain Tourancheau, Patrick Le Callet, Dominique Barba, "Influence of motion on contrast perception: supra-threshold spatio-velocity measurements", Proc. SPIE 6492, Human Vision and Electronic Imaging XII, 64921M (12 February 2007); doi: 10.1117/12.704574; https://doi.org/10.1117/12.704574


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