CIE L*a*b*: Comparison of digital images obtained photographically by manual and automatic modes

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade de Taubaté -UNITAU-
Autor(es): dc.creatorTakatsui, Fabiana-
Autor(es): dc.creatorde Andrade, Marcelo Ferrarezi-
Autor(es): dc.creatorNeisser, Maximiliano Piero-
Autor(es): dc.creatorBarros, Luiz Antônio Borelli-
Autor(es): dc.creatorLoffredo, Leonor de Castro Monteiro-
Data de aceite: dc.date.accessioned2025-08-21T22:09:26Z-
Data de disponibilização: dc.date.available2025-08-21T22:09:26Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2012-11-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/S1806-83242012005000025-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227143-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227143-
Descrição: dc.descriptionThe aim of this study was to analyze the color alterations performed by the CIE L*a*b* system in the digital imaging of shade guide tabs, which were obtained photographically according to the automatic and manual modes. This study also sought to examine the observers' agreement in quantifying the coordinates. Four Vita Lumin Vaccum shade guide tabs were used: A3.5, B1, B3 and C4. An EOS Canon digital camera was used to record the digital images of the shade tabs, and the images were processed using Adobe Photoshop software. A total of 80 observations (five replicates of each shade according to two observers in two modes, specifically, automatic and manual) were obtained, leading to color values of L*, a* and b*. The color difference (?E) between the modes was calculated and classified as either clinically acceptable or unacceptable. The results indicated that there was agreement between the two observers in obtaining the L*, a* and b* values related to all guides. However, the B1, B3, and C4 shade tabs had ?E values classified as clinically acceptable ({increment}E = 0.44, {increment}E = 2.04 and {increment}E = 2.69, respectively). The A3.5 shade tab had a ?E value classified as clinically unacceptable ({increment}E = 4.17), as it presented higher values for luminosity in the automatic mode (L* = 54.0) than in the manual mode (L* = 50.6). It was concluded that the B1, B3 and C4 shade tabs can be used at any of the modes in digital camera (manual or automatic), which was a different finding from that observed for the A3.5 shade tab.-
Descrição: dc.descriptionDepartment of Restorative Dentistry Araraquara Dental School Universidade Paulista Júlio de Mesquita Filho-UNESP, Araraquara, SP-
Descrição: dc.descriptionDepartment of Clinical Research in Periodontology Universidade de Taubaté -UNITAU, Taubaté, SP-
Descrição: dc.descriptionDepartment of Social Dentistry Araraquara Dental School Universidade Paulista Júlio de Mesquita Filho-UNESP, Araraquara, SP-
Descrição: dc.descriptionDepartment of Restorative Dentistry Araraquara Dental School Universidade Paulista Júlio de Mesquita Filho-UNESP, Araraquara, SP-
Descrição: dc.descriptionDepartment of Social Dentistry Araraquara Dental School Universidade Paulista Júlio de Mesquita Filho-UNESP, Araraquara, SP-
Formato: dc.format578-583-
Idioma: dc.languageen-
Relação: dc.relationBrazilian Oral Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectColor Perception-
Palavras-chave: dc.subjectComputer-Assisted-
Palavras-chave: dc.subjectImage Processing-
Palavras-chave: dc.subjectTooth-
Título: dc.titleCIE L*a*b*: Comparison of digital images obtained photographically by manual and automatic modes-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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