12 February 2007 Influence of motion on contrast perception: supra-threshold spatio-velocity measurements
Author Affiliations +
Proceedings Volume 6492, Human Vision and Electronic Imaging XII; 64921M (2007); doi: 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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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
PROCEEDINGS
11 PAGES


SHARE
KEYWORDS
Spatial frequencies

Contrast sensitivity

Motion measurement

Visibility

Visualization

Visual system

Wave propagation

RELATED CONTENT


Back to Top