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A study of the orange juice color scores measured by Colorflex citrus colorimeter AgEcon
Lee, Jonq-Ying.
Tipo: Report Palavras-chave: Orange juice; Colorimeter; Color scores; Agribusiness.
Ano: 2002 URL: http://purl.umn.edu/52891
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Computer vision system approach in colour measurements of foods: Part I. development of methodology Ciênc. Tecnol. Aliment.
TARLAK,Fatih; OZDEMİR,Murat; MELİKOGLU,Mehmet.
Abstract The colour assessment ability of the computer vision system is investigated and the data are compared with colour measurements taken by a conventional colorimeter. Linear and quadratic models are built to improve currently used methodology for the conversion of RGB colour units to L * a * b * colour space. For this purpose, two innovative ideas are proposed and tested. First, substantial amount of colour tones is generated to cover as many points in the colour space as possible. Secondly, the colour space is calibrated separately, whereas in previous research in the literature, the colour space is calibrated simultaneously. It is found that the RGB colour units to L * a * b * colour space transformation approach proposed in this study...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Colour; Computer vision system; Colorimeter; RGB; L* a* b*.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612016000200382
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MEASURING COLOR HUE IN ‘SUNRISE SOLO’ PAPAYA USING A FLATBED SCANNER Rev. Bras. Frutic.
OLIVEIRA,THIAGO DE PAULA; ZOCCHI,SILVIO SANDOVAL; JACOMINO,ANGELO PEDRO.
ABSTRACT Color hue is a variable frequently used postharvest to assess the physiological maturity of various fruits. In general, mean color hue is quantified by visual techniques, but this method, based on human grading, is tedious and may be erroneous. The color of fruit peel is frequently determined at four points randomly distributed on the equatorial region of a fruit, but this practice can lead to biased results because these points represent the equatorial region only and not the total area of the fruit peel. Consequently, this bias is not due to equipment measurement errors, but to the bias in the sampling process of the points on the fruit epidermis. An alternative to such methods is the digital image which provides information about all regions...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Postharvest; Hue color; Circular data; Digital image; Colorimeter.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200304
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