Awareness of the light field: the case of deformation

Human observers group local shading patterns into global super-patterns that appear to be illuminated in some unitary fashion. Many years ago, this was noticed for the case of uniform, unidirectional illumination. Recently, we found that it also applies to convergent and divergent illumination flows...

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Autores principales: van Doorn, Andrea J., Koenderink, Jan J., Todd, James T., Wagemans, Johan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pion 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3485835/
https://www.ncbi.nlm.nih.gov/pubmed/23145298
http://dx.doi.org/10.1068/i0504
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author van Doorn, Andrea J.
Koenderink, Jan J.
Todd, James T.
Wagemans, Johan
author_facet van Doorn, Andrea J.
Koenderink, Jan J.
Todd, James T.
Wagemans, Johan
author_sort van Doorn, Andrea J.
collection PubMed
description Human observers group local shading patterns into global super-patterns that appear to be illuminated in some unitary fashion. Many years ago, this was noticed for the case of uniform, unidirectional illumination. Recently, we found that it also applies to convergent and divergent illumination flows, but that human observers are blind to rotational light flow patterns (in the sense of being unable to group the local shading patterns). We now report that human observers are also blind to deformation patterns. This is perhaps interesting because convergent, divergent, rotational, and deformation patterns all occur in natural light fields. This is an idiosyncrasy of the human visual system, on par with the fact that visual awareness fails to present the observer with saddle shapes.
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spelling pubmed-34858352012-11-09 Awareness of the light field: the case of deformation van Doorn, Andrea J. Koenderink, Jan J. Todd, James T. Wagemans, Johan Iperception Article Human observers group local shading patterns into global super-patterns that appear to be illuminated in some unitary fashion. Many years ago, this was noticed for the case of uniform, unidirectional illumination. Recently, we found that it also applies to convergent and divergent illumination flows, but that human observers are blind to rotational light flow patterns (in the sense of being unable to group the local shading patterns). We now report that human observers are also blind to deformation patterns. This is perhaps interesting because convergent, divergent, rotational, and deformation patterns all occur in natural light fields. This is an idiosyncrasy of the human visual system, on par with the fact that visual awareness fails to present the observer with saddle shapes. Pion 2012-07-18 /pmc/articles/PMC3485835/ /pubmed/23145298 http://dx.doi.org/10.1068/i0504 Text en Copyright © 2012 A J van Doorn, J J Koenderink, J T Todd, J Wagemans http://creativecommons.org/licenses/by-nc-nd/3.0/ This open-access article is distributed under a Creative Commons Licence, which permits noncommercial use, distribution, and reproduction, provided the original author(s) and source are credited and no alterations are made.
spellingShingle Article
van Doorn, Andrea J.
Koenderink, Jan J.
Todd, James T.
Wagemans, Johan
Awareness of the light field: the case of deformation
title Awareness of the light field: the case of deformation
title_full Awareness of the light field: the case of deformation
title_fullStr Awareness of the light field: the case of deformation
title_full_unstemmed Awareness of the light field: the case of deformation
title_short Awareness of the light field: the case of deformation
title_sort awareness of the light field: the case of deformation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3485835/
https://www.ncbi.nlm.nih.gov/pubmed/23145298
http://dx.doi.org/10.1068/i0504
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