{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1050024091652208384.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"HDL","@value":"https://hdl.handle.net/2324/7385218"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@language":"en","@value":"Human color constancy in cast shadows"}],"dc:language":"en","description":[{"type":"Abstract","notation":[{"@language":"en","@value":"Illumination conditions inside and outside cast shadows typically differ significantly in both intensity and in chromaticity. However, our daily experiences suggest that we generally have no difficulty in stably perceiving surface color in cast shadows. In this study, two experiments were conducted to measure the extent to which color constancy holds within cast shadows. We constructed a scene with colored hexagons illuminated by two projectors simulating “sunlight” and “skylight.” Part of the scene included a cast shadow, illuminated only by the skylight, where a subjective white point was measured. We also created a condition in which a cast shadow was not perceived as a shadow. Results showed that color constancy generally holds well in shadows, and the color of skylight had varying effects depending on observers. Perceiving a cast shadow as a shadow had no effect. Overall, these findings are consistent with our daily experiences, in which we stably judge objects’ color even within cast shadows."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1070024091652208387","@type":"Researcher","personIdentifier":[{"@type":"ORCID","@value":"0000-0001-9897-8338"}],"foaf:name":[{"@language":"en","@value":"Morimoto, Takuma"},{"@language":"ja","@value":"モリモト, タクマ"}],"jpcoar:affiliationName":[{"@language":"en","@value":"University of Oxford"},{"@language":"ja","@value":"オックスフォード大学"},{"@language":"en","@value":"Physics Center of Minho and Porto Universities (CF-UM-UP)"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276173809408","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"40336938"},{"@type":"NRID","@value":"1000040336938"},{"@type":"NRID","@value":"9000002929543"},{"@type":"NRID","@value":"9000391752947"},{"@type":"NRID","@value":"9000414255290"},{"@type":"NRID","@value":"9000405526383"},{"@type":"NRID","@value":"9000020190085"},{"@type":"NRID","@value":"9000242083066"},{"@type":"NRID","@value":"9000020157777"},{"@type":"NRID","@value":"9000261648960"}],"foaf:name":[{"@language":"en","@value":"Sato, Masayuki"},{"@language":"ja","@value":"佐藤, 雅之"},{"@language":"ja-Kana","@value":"サトウ, マサユキ"}],"jpcoar:affiliationName":[{"@language":"en","@value":"University of Kitakyushu"},{"@language":"ja","@value":"北九州市立大学"}]},{"@id":"https://cir.nii.ac.jp/crid/1420001326233673216","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"60294998"},{"@type":"NRID","@value":"1000060294998"},{"@type":"ORCID","@value":"0000-0003-0011-7818"},{"@type":"NRID","@value":"9000002731594"},{"@type":"NRID","@value":"9000237728243"},{"@type":"NRID","@value":"9000403169914"},{"@type":"NRID","@value":"9000403310736"},{"@type":"NRID","@value":"9000403169920"},{"@type":"NRID","@value":"9000398617647"},{"@type":"NRID","@value":"9000391385381"},{"@type":"NRID","@value":"9000258615857"},{"@type":"NRID","@value":"9000001052773"},{"@type":"NRID","@value":"9000402296442"},{"@type":"NRID","@value":"9000378061623"},{"@type":"NRID","@value":"9000258739769"},{"@type":"NRID","@value":"9000398617623"},{"@type":"NRID","@value":"9000003853731"},{"@type":"NRID","@value":"9000382215028"},{"@type":"NRID","@value":"9000398617581"},{"@type":"NRID","@value":"9000400131809"},{"@type":"NRID","@value":"9000400131807"},{"@type":"NRID","@value":"9000401157826"},{"@type":"NRID","@value":"9000402296573"},{"@type":"NRID","@value":"9000396152591"},{"@type":"NRID","@value":"9000364769569"},{"@type":"NRID","@value":"9000364762621"},{"@type":"NRID","@value":"9000364770386"},{"@type":"NRID","@value":"9000364762286"},{"@type":"NRID","@value":"9000364768514"},{"@type":"NRID","@value":"9000364768504"},{"@type":"NRID","@value":"9000364770244"},{"@type":"NRID","@value":"9000364770328"},{"@type":"NRID","@value":"9000364768341"},{"@type":"NRID","@value":"9000364768835"},{"@type":"NRID","@value":"9000364768486"},{"@type":"NRID","@value":"9000364769016"},{"@type":"NRID","@value":"9000364769646"},{"@type":"NRID","@value":"9000364768830"},{"@type":"NRID","@value":"9000364787152"},{"@type":"NRID","@value":"9000364761315"},{"@type":"NRID","@value":"9000364787742"},{"@type":"NRID","@value":"9000364787793"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/sunaga_shoji"}],"foaf:name":[{"@language":"en","@value":"Sunaga, Shoji"},{"@language":"ja","@value":"須長, 正治"},{"@language":"ja-Kana","@value":"スナガ, ショウジ"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Kyushu University"},{"@language":"ja","@value":"九州大学"}]},{"@id":"https://cir.nii.ac.jp/crid/1420845751156948608","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"00158776"},{"@type":"NRID","@value":"1000000158776"},{"@type":"NRID","@value":"9000002730568"},{"@type":"NRID","@value":"9000257785959"},{"@type":"NRID","@value":"9000391740693"},{"@type":"NRID","@value":"9000402296896"},{"@type":"NRID","@value":"9000257786113"},{"@type":"NRID","@value":"9000002730215"},{"@type":"NRID","@value":"9000415087472"},{"@type":"NRID","@value":"9000258615862"},{"@type":"NRID","@value":"9000412649944"},{"@type":"NRID","@value":"9000001052714"},{"@type":"NRID","@value":"9000387479835"},{"@type":"NRID","@value":"9000001050796"},{"@type":"NRID","@value":"9000001050791"},{"@type":"NRID","@value":"9000001699408"},{"@type":"NRID","@value":"9000408789685"},{"@type":"NRID","@value":"9000001052768"},{"@type":"NRID","@value":"9000258616621"},{"@type":"NRID","@value":"9000000989211"},{"@type":"NRID","@value":"9000001304341"},{"@type":"NRID","@value":"9000345345181"},{"@type":"NRID","@value":"9000412342232"},{"@type":"NRID","@value":"9000001052772"},{"@type":"NRID","@value":"9000364787580"},{"@type":"NRID","@value":"9000364720983"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/uchikawa2016"}],"foaf:name":[{"@language":"en","@value":"Uchikawa, Keiji"},{"@language":"ja","@value":"内川, 惠二"},{"@language":"ja-Kana","@value":"ウチカワ, ケイジ"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Human Media Research Center, Kanagawa Institute of Technology"},{"@language":"ja","@value":"神奈川工科大学ヒューマンメディア研究センター"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"20416695"},{"@type":"EISSN","@value":"20416695"}],"prism:publicationName":[{"@language":"en","@value":"i-Perception"}],"dc:publisher":[{"@value":"SAGE Publications"}],"prism:publicationDate":"2025-07","prism:volume":"16","prism:number":"4"},"dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["Creative Commons Attribution 4.0 International","© The Author(s) 2025"],"foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=color%20constancy","dc:title":"color constancy"},{"@id":"https://cir.nii.ac.jp/all?q=cast%20shadow","dc:title":"cast shadow"},{"@id":"https://cir.nii.ac.jp/all?q=sunlight","dc:title":"sunlight"},{"@id":"https://cir.nii.ac.jp/all?q=skylight","dc:title":"skylight"},{"@id":"https://cir.nii.ac.jp/all?q=achromatic%20setting","dc:title":"achromatic setting"}],"dcterms:subject":[{"subjectScheme":"Other","notation":[{"@language":"en","@value":"color constancy"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"cast shadow"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"sunlight"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"skylight"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"achromatic setting"}]}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040848250613555712","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"19K22881"},{"@type":"JGN","@value":"JP19K22881"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19K22881/"}],"notation":[{"@language":"ja","@value":"発達過程での視環境条件を統制した新手法動物実験による色恒常性成立メカニズムの解明"},{"@language":"en","@value":"Revealing color constancy mechanism with a new animal experiment executed in controlled visual environmental conditions in the developmental process"}]},{"@id":"https://cir.nii.ac.jp/crid/1860024091652208385","@type":"Project","notation":[{"@language":"en","@value":"Sir Henry Wellcome Postdoctoral Fellowships"}]}],"dataSourceIdentifier":[{"@type":"IRDB","@value":"oai:irdb.nii.ac.jp:01211:0006934464"}]}