Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/21653
Título: | Low-frequency correlations (1/f alpha type) in paint application of metallic colors |
Autor(es): | Medina, José M. Diaz, José A. |
Data: | 2012 |
Editora: | Optical Society of America |
Revista: | Optics Express |
Resumo(s): | We examine trial-to-trial variability of color coordinates in automotive coatings containing effect pigments, which are considered a reference paradigm for engineering angle-dependent color effects. We report the existence of correlations that show 1/f - Fourier spectra at low frequencies in all color coordinates. The scaling exponent was lower at near-specular conditions for lightness variations, suggesting a contribution from the deposition of metal flakes in metallic colors. However, the exponent was lower near the specular for blue-yellow variations, suggesting a contribution from chemical pigments in solid colors. These results were independent of the illuminant spectra. The methods employed are useful in the evaluation of industrial color matching among assembly parts. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/21653 |
DOI: | 10.1364/OE.20.017560 |
ISSN: | 1094-4087 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - OCV - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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MedinaDiazOE.pdf | 130,89 kB | Adobe PDF | Ver/Abrir |