Measuring perceived differences in surface texture due to changes in higher order statistics

Emrith, K., Chantler, M. J., Green, P. R., Maloney, L. and Clarke, A. D. F. (2010) Measuring perceived differences in surface texture due to changes in higher order statistics. Journal of the Optical Society of America A: Optics, Image Science & Vision (JOSA A), 27 (5). pp. 1232-1244. ISSN 1084-7529

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Publisher's URL: http://www.opticsinfobase.org/josaa/abstract.cfm?U...

Abstract

We investigate the ability of humans to perceive changes in the appearance of images of surface texture caused by the variation of their higher order statistics. We incrementally randomize their phase spectra while holding their first and second order statistics constant in order to ensure that the change in the appearance is due solely to changes in third and other higher order statistics. Stimuli comprise both natural and synthetically generated naturalistic images, with the latter being used to prevent observers from making pixel-wise comparisons. A difference scaling method is used to derive the perceptual scales for each observer, which show a sigmoidal relationship with the degree of randomization. Observers were maximally sensitive to changes within the 20%-60% randomization range. In order to account for this behavior we propose a biologically plausible model that computes the variance of local measurements of phase congruency

Item Type:Article
Uncontrolled Keywords:higher order statistics, texture perception, maximum likelihood difference scaling, phase randomisation
Faculty/Department:Faculty of Health and Applied Sciences
ID Code:12672
Deposited By: Dr K. Emrith
Deposited On:25 Nov 2010 16:00
Last Modified:22 May 2014 14:12

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