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Dynamic Visual Cues for Differentiating Mirror and Glass
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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5976772/ https://www.ncbi.nlm.nih.gov/pubmed/29849082 http://dx.doi.org/10.1038/s41598-018-26720-x |
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author | Tamura, Hideki Higashi, Hiroshi Nakauchi, Shigeki |
author_facet | Tamura, Hideki Higashi, Hiroshi Nakauchi, Shigeki |
author_sort | Tamura, Hideki |
collection | PubMed |
description | 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 | Online Article Text |
id | pubmed-5976772 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-59767722018-05-31 Dynamic Visual Cues for Differentiating Mirror and Glass Tamura, Hideki Higashi, Hiroshi Nakauchi, Shigeki Sci Rep Article 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. Nature Publishing Group UK 2018-05-30 /pmc/articles/PMC5976772/ /pubmed/29849082 http://dx.doi.org/10.1038/s41598-018-26720-x Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Tamura, Hideki Higashi, Hiroshi Nakauchi, Shigeki Dynamic Visual Cues for Differentiating Mirror and Glass |
title | 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_short | Dynamic Visual Cues for Differentiating Mirror and Glass |
title_sort | dynamic visual cues for differentiating mirror and glass |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5976772/ https://www.ncbi.nlm.nih.gov/pubmed/29849082 http://dx.doi.org/10.1038/s41598-018-26720-x |
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