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Tipo do documento: Artigo
Título: Identification of pale lager beers via image analysis
Autor: Silva, T. C. O.
Godinho, Mariana da Silva
Oliveira, Anselmo Elanca de
Abstract: This article presents an alternative color-based classification methodology which is used for pattern recognition of pale lager beers. Beer sample images are digitalized on a common desk scanner resulting in color histograms in the RGB scale. The frequency distribution of color indexes according to each color channel were obtained for each image, then decomposed into vector lines R, G and B, each vector having 256 components (indexes/color tones). PCA is used to represent the data in twodimensional plots, and also to represent color changes of beer samples exposed to light and air. After one hour, significant changes in the yellow color of the beer can be distinguished in the score plot. In short, differences between brands of beer are directly related to differences in their color.
Palavras-chave: PCA
Chemical imaging
Pale lager beers
País: Argentina
Unidade acadêmica: Instituto de Química - IQ (RG)
Citação: SILVA, T. C. O.; GODINHO, Mariana S.; OLIVEIRA, A. E. de. Identification of pale lager beers via image analysis. Latin American Applied Research, Bahía Blanca , v. 41, p. 141-145, 2011.
Tipo de acesso: Acesso Aberto
Data de publicação: 2011
Aparece nas coleções:IQ - Artigos publicados em periódicos

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