Gloss discrimination and eye movements

Jonathan B. Phillips; James A. Ferwerda; Ann Nunziata

doi:10.1117/12.845399

22 February 2010 Gloss discrimination and eye movements

Jonathan B. Phillips, James A. Ferwerda, Ann Nunziata

Proceedings Volume 7527, Human Vision and Electronic Imaging XV; 75270Z (2010) https://doi.org/10.1117/12.845399
Event: IS&T/SPIE Electronic Imaging, 2010, San Jose, California, United States

Abstract

Human observers are able to make fine discriminations of surface gloss. What cues are they using to perform this task? In previous studies, we identified two reflection-related cues-the contrast of the reflected image (c, contrast gloss) and the sharpness of reflected image (d, distinctness-of-image gloss)--but these were for objects rendered in standard dynamic range (SDR) images with compressed highlights. In ongoing work, we are studying the effects of image dynamic range on perceived gloss, comparing high dynamic range (HDR) images with accurate reflections and SDR images with compressed reflections. In this paper, we first present the basic findings of this gloss discrimination study then present an analysis of eye movement recordings that show where observers were looking during the gloss discrimination task. The results indicate that: 1) image dynamic range has significant influence on perceived gloss, with surfaces presented in HDR images being seen as glossier and more discriminable than their SDR counterparts; 2) observers look at both light source highlights and environmental interreflections when judging gloss; and 3) both of these results are modulated by surface geometry and scene illumination.

Citation Download Citation

Jonathan B. Phillips, James A. Ferwerda, and Ann Nunziata "Gloss discrimination and eye movements", Proc. SPIE 7527, Human Vision and Electronic Imaging XV, 75270Z (22 February 2010); https://doi.org/10.1117/12.845399

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