Influence of motion on contrast perception: supra-threshold spatio-velocity measurements

Sylvain Tourancheau; Patrick Le Callet; Dominique Barba

doi:10.1117/12.704574

12 February 2007 Influence of motion on contrast perception: supra-threshold spatio-velocity measurements

Sylvain Tourancheau, Patrick Le Callet, Dominique Barba

Proceedings Volume 6492, Human Vision and Electronic Imaging XII; 64921M (2007) https://doi.org/10.1117/12.704574
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

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.

Citation Download Citation

Sylvain Tourancheau, Patrick Le Callet, and 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); https://doi.org/10.1117/12.704574

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