Dynamic Visual Cues for Differentiating Mirror and Glass

Abstract Mirror materials (perfect specular surfaces such as polished metal) and glass materials (transparent and refraction media) are quite commonly encountered in everyday life. The human visual system can discriminate these complex distorted images formed by reflection or transmission of the sur...

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Autores principales:	Hideki Tamura, Hiroshi Higashi, Shigeki Nakauchi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/afbce180c54446d482f597ff484c0847
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spelling	oai:doaj.org-article:afbce180c54446d482f597ff484c08472021-12-02T15:07:49ZDynamic Visual Cues for Differentiating Mirror and Glass10.1038/s41598-018-26720-x2045-2322https://doaj.org/article/afbce180c54446d482f597ff484c08472018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-26720-xhttps://doaj.org/toc/2045-2322Abstract Mirror materials (perfect specular surfaces such as polished metal) and glass materials (transparent and refraction media) are quite commonly encountered in everyday life. The human visual system can discriminate these complex distorted images formed by reflection or transmission of the surrounding environment even though they do not intrinsically possess surface colour. In this study, we determined the cues that aid mirror and glass discrimination. From video analysis, we found that glass objects have more opposite motion components relative to the direction of object rotation. Then, we hypothesised a model developed using motion transparency because motion information is not only present on the front side, but also on the rear side of the object surface in the glass material object. In materials judging experiments, we found that human performance with rotating video stimuli is higher than that with static stimuli (simple images). Subsequently, we compared the developed model derived from motion coherency to human rating performance for transparency and specular reflection. The model sufficiently identified the different materials using dynamic information. These results suggest that the visual system relies on dynamic cues that indicate the difference between mirror and glass.Hideki TamuraHiroshi HigashiShigeki NakauchiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hideki Tamura Hiroshi Higashi Shigeki Nakauchi Dynamic Visual Cues for Differentiating Mirror and Glass
description	Abstract Mirror materials (perfect specular surfaces such as polished metal) and glass materials (transparent and refraction media) are quite commonly encountered in everyday life. The human visual system can discriminate these complex distorted images formed by reflection or transmission of the surrounding environment even though they do not intrinsically possess surface colour. In this study, we determined the cues that aid mirror and glass discrimination. From video analysis, we found that glass objects have more opposite motion components relative to the direction of object rotation. Then, we hypothesised a model developed using motion transparency because motion information is not only present on the front side, but also on the rear side of the object surface in the glass material object. In materials judging experiments, we found that human performance with rotating video stimuli is higher than that with static stimuli (simple images). Subsequently, we compared the developed model derived from motion coherency to human rating performance for transparency and specular reflection. The model sufficiently identified the different materials using dynamic information. These results suggest that the visual system relies on dynamic cues that indicate the difference between mirror and glass.
format	article
author	Hideki Tamura Hiroshi Higashi Shigeki Nakauchi
author_facet	Hideki Tamura Hiroshi Higashi Shigeki Nakauchi
author_sort	Hideki Tamura
title	Dynamic Visual Cues for Differentiating Mirror and Glass
title_short	Dynamic Visual Cues for Differentiating Mirror and Glass
title_full	Dynamic Visual Cues for Differentiating Mirror and Glass
title_fullStr	Dynamic Visual Cues for Differentiating Mirror and Glass
title_full_unstemmed	Dynamic Visual Cues for Differentiating Mirror and Glass
title_sort	dynamic visual cues for differentiating mirror and glass
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/afbce180c54446d482f597ff484c0847
work_keys_str_mv	AT hidekitamura dynamicvisualcuesfordifferentiatingmirrorandglass AT hiroshihigashi dynamicvisualcuesfordifferentiatingmirrorandglass AT shigekinakauchi dynamicvisualcuesfordifferentiatingmirrorandglass
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Dynamic Visual Cues for Differentiating Mirror and Glass

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