凹凸的还是光泽的?朗伯表面错觉光泽的心理物理研究
Alternative TitleBumpy or Glossy? A Psychophysical Study of the Illusory Gloss on Lambertian Surfaces
Li Tian; Lin Qi; JunYu Dong; qilin@ouc.edu.cn
2016
Conference Name2016年第一届北京视觉科学会议
Conference Date2016-07
Conference Place北京
Funding Organization中国科学院心理研究所
Other Abstract

PURPOSE: Lambertian surfaces, which are used to model matte appearance, have been reported to present illusory gloss under special conditions: the surface is of high-magnitude RMS height deviation and is viewed fronto-planar while being illuminated with collimated light originating from directly behind the observer (Wijntjes et al, 2010, Journal of Vision, 10(9), 13). We conducted two psychophysical experiments to examine whether this illusory gloss is perceived in the same manner as those of real glossy surfaces, and whether observers can recognize the surfaces are of unordinary RMS height.
METHODS: In the first experiment, observers adjusted the parameters of a glossy reflection model applied on surfaces with ordinary RMS height, and they successfully matched the perceived gloss of these real glossy surfaces to the perceived gloss of the high-RMS-height Lambertian surfaces. Then the observers participated in a 2AFC experiment, in which they were asked to choose the bumpier one from a pair of surfaces used in the first experiment.
RESULTS: The results support the previous finding that glossiness and bumpiness inter-influence the perception of each other (Ho et al, 2008, Psychological Science, 19, 196-204). We also find that the perceived bumpiness of the high-RMS-height Lambertian surfaces are not significantly different from those of the ordinary-RMS-height glossy surfaces.
CONCLUSIONS: This indicates that the high-RMS-height Lambertian surfaces are perceived by observers as low-RMS-height glossy surfaces. Similar to the bas-relief ambiguity, the literature and our current work show that under certain surface geometry, lighting and viewing conditions, the perception of surface property is puzzled by a kind of “bump-gloss” ambiguity.

Keywordperceived glossiness perceived bumpiness Lambertian surface
Subject Area感知觉心理学
URL查看原文
Indexed By其他
Language英语
Document Type会议论文
Identifierhttp://ir.psych.ac.cn/handle/311026/20800
Collection心理所主办、承办、协办学术会议_2016年第一届北京视觉科学会议_会议摘要
Corresponding Authorqilin@ouc.edu.cn
AffiliationDepartment of Computer Science, Ocean University of China, Qingdao 266100, China
Recommended Citation
GB/T 7714
Li Tian,Lin Qi,JunYu Dong. 凹凸的还是光泽的?朗伯表面错觉光泽的心理物理研究[C]. 见:2016年第一届北京视觉科学会议. 北京. 2016-07.http://vision.csp.escience.cn/dct/page/1.
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