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Proceedings Paper

Influence of motion on contrast perception: supra-threshold spatio-velocity measurements
Author(s): Sylvain Tourancheau; Patrick Le Callet; Dominique Barba
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Paper 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.

Paper Details

Date Published: 12 February 2007
PDF: 11 pages
Proc. SPIE 6492, Human Vision and Electronic Imaging XII, 64921M (12 February 2007); doi: 10.1117/12.704574
Show Author Affiliations
Sylvain Tourancheau, Univ. de Nantes (France)
Patrick Le Callet, Univ. de Nantes (France)
Dominique Barba, Univ. de Nantes (France)

Published in SPIE Proceedings Vol. 6492:
Human Vision and Electronic Imaging XII
Bernice E. Rogowitz; Thrasyvoulos N. Pappas; Scott J. Daly, Editor(s)

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