Fluctuating environmental light limits number of surfaces visually recognizable by colour

Abstract Small changes in daylight in the environment can produce large changes in reflected light, even over short intervals of time. Do these changes limit the visual recognition of surfaces by their colour? To address this question, information-theoretic methods were used to estimate computationa...

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Autor principal:	David H. Foster
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c42005113aa84bd1b16b49887db1c6a6
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spelling	oai:doaj.org-article:c42005113aa84bd1b16b49887db1c6a62021-12-02T13:51:16ZFluctuating environmental light limits number of surfaces visually recognizable by colour10.1038/s41598-020-80591-92045-2322https://doaj.org/article/c42005113aa84bd1b16b49887db1c6a62021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80591-9https://doaj.org/toc/2045-2322Abstract Small changes in daylight in the environment can produce large changes in reflected light, even over short intervals of time. Do these changes limit the visual recognition of surfaces by their colour? To address this question, information-theoretic methods were used to estimate computationally the maximum number of surfaces in a sample that can be identified as the same after an interval. Scene data were taken from successive hyperspectral radiance images. With no illumination change, the average number of surfaces distinguishable by colour was of the order of 10,000. But with an illumination change, the average number still identifiable declined rapidly with change duration. In one condition, the number after two minutes was around 600, after 10 min around 200, and after an hour around 70. These limits on identification are much lower than with spectral changes in daylight. No recoding of the colour signal is likely to recover surface identity lost in this uncertain environment.David H. FosterNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q David H. Foster Fluctuating environmental light limits number of surfaces visually recognizable by colour
description	Abstract Small changes in daylight in the environment can produce large changes in reflected light, even over short intervals of time. Do these changes limit the visual recognition of surfaces by their colour? To address this question, information-theoretic methods were used to estimate computationally the maximum number of surfaces in a sample that can be identified as the same after an interval. Scene data were taken from successive hyperspectral radiance images. With no illumination change, the average number of surfaces distinguishable by colour was of the order of 10,000. But with an illumination change, the average number still identifiable declined rapidly with change duration. In one condition, the number after two minutes was around 600, after 10 min around 200, and after an hour around 70. These limits on identification are much lower than with spectral changes in daylight. No recoding of the colour signal is likely to recover surface identity lost in this uncertain environment.
format	article
author	David H. Foster
author_facet	David H. Foster
author_sort	David H. Foster
title	Fluctuating environmental light limits number of surfaces visually recognizable by colour
title_short	Fluctuating environmental light limits number of surfaces visually recognizable by colour
title_full	Fluctuating environmental light limits number of surfaces visually recognizable by colour
title_fullStr	Fluctuating environmental light limits number of surfaces visually recognizable by colour
title_full_unstemmed	Fluctuating environmental light limits number of surfaces visually recognizable by colour
title_sort	fluctuating environmental light limits number of surfaces visually recognizable by colour
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c42005113aa84bd1b16b49887db1c6a6
work_keys_str_mv	AT davidhfoster fluctuatingenvironmentallightlimitsnumberofsurfacesvisuallyrecognizablebycolour
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Fluctuating environmental light limits number of surfaces visually recognizable by colour

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