Robust colour constancy in red-green dichromats
Publication Date
June 29, 2017
Authors
Leticia Álvaro, João M. M. Linhares, Humberto Moreira, Julio Lillo, et al
Volume
12
Issue
6
Pages
e0180310
DOI
https://dx.plos.org/10.1371/journal.pone.0180310
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0180310
Scopus
85021656368
Mendeley
http://www.mendeley.com/research/robust-colour-constancy-redgreen-dichromats
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Mendeley | Further Information

{"title"=>"Robust colour constancy in red-green dichromats", "type"=>"journal", "authors"=>[{"first_name"=>"Leticia", "last_name"=>"Álvaro", "scopus_author_id"=>"55293456900"}, {"first_name"=>"João M.M.", "last_name"=>"Linhares", "scopus_author_id"=>"15022608200"}, {"first_name"=>"Humberto", "last_name"=>"Moreira", "scopus_author_id"=>"7003290322"}, {"first_name"=>"Julio", "last_name"=>"Lillo", "scopus_author_id"=>"6701734831"}, {"first_name"=>"Sérgio M.C.", "last_name"=>"Nascimento", "scopus_author_id"=>"7003805778"}], "year"=>2017, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-85021656368", "pui"=>"617004557", "doi"=>"10.1371/journal.pone.0180310", "isbn"=>"1111111111", "sgr"=>"85021656368"}, "id"=>"b8403384-02b1-39f1-927f-e0daa6497df7", "abstract"=>"© 2017 Álvaro et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Colour discrimination has been widely studied in red-green (R-G) dichromats but the extent to which their colour constancy is affected remains unclear. This work estimated the extent of colour constancy for four normal trichromatic observers and seven R-G dichromats when viewing natural scenes under simulated daylight illuminants. Hyperspectral imaging data from natural scenes were used to generate the stimuli on a calibrated CRT display. In experiment 1, observers viewed a reference scene illuminated by daylight with a correlated colour temperature (CCT) of 6700K; observers then viewed sequentially two versions of the same scene, one illuminated by either a higher or lower CCT (condition 1, pure CCT change with constant luminance) or a higher or lower average luminance (condition 2, pure luminance change with a constant CCT). The observers' task was to identify the version of the scene that looked different from the reference scene. Thresholds for detecting a pure CCT change or a pure luminance change were estimated, and it was found that those for R-G dichromats were marginally higher than for normal trichromats regarding CCT. In experiment 2, observers viewed sequentially a reference scene and a comparison scene with a CCT change or a luminance change above threshold for each observer. The observers' task was to identify whether or not the change was an intensity change. No significant differences were found between the responses of normal trichromats and dichromats. These data suggest robust colour constancy mechanisms along daylight locus in R-G dichromacy.", "link"=>"http://www.mendeley.com/research/robust-colour-constancy-redgreen-dichromats", "reader_count"=>5, "reader_count_by_academic_status"=>{"Professor > Associate Professor"=>1, "Student > Ph. D. Student"=>3, "Student > Postgraduate"=>1}, "reader_count_by_user_role"=>{"Professor > Associate Professor"=>1, "Student > Ph. D. Student"=>3, "Student > Postgraduate"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Physics and Astronomy"=>2, "Psychology"=>1, "Medicine and Dentistry"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>2}, "Psychology"=>{"Psychology"=>1}, "Unspecified"=>{"Unspecified"=>1}}, "group_count"=>0}

Scopus | Further Information

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