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Provedor de dados:  CIGR Journal
País:  China
Título:  Development of an automatic chili drying controller based on computer vision
Autores:  Kanjanawanishkul, Kiattisin
Data:  2019-07-28
Ano:  2019
Palavras-chave:  Dried chili color
Image processing
Drying control
Closed-loop controlthe Higher Education Research Promotion and National Research University Project of Thailand Office of the Higher Education Commission
Resumo:  Color of dried chilies is one of the most key factors that influences consumers’ preference. It is mainly affected by the drying process. Traditionally, drying temperature is fixed during the drying process without regard to the quality of chilies being dried. Thus, the aim of this research is to develop a controller for the chili drying process that determines the drying temperature according to the change of chili color. To measure the chili color, we built a hot air tray dryer incorporated with a computer vision system which measures the chili color during drying. We converted the RGB color model to the L*a*b* color model and calculated the change of the a* component (\delta a). If \delta a within 15 minutes was less than 2, then, the drying temperature was set to 90°C for ten minutes and set back to 80°C, otherwise, it was set to 80°C. The experimental results showed that the drying time was shortened, compared to the 80°C drying temperature. The color of dried chilies was improved, compared to the 90°C drying temperature.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  International Commission of Agricultural and Biosystems Engineering
Formato:  application/pdf
Fonte:  Agricultural Engineering International: CIGR Journal; Vol 21, No 2 (2019): CIGR Journal; 143-148

Direitos:  Copyright (c) 2019 Agricultural Engineering International: CIGR Journal

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