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Computer Vision System for Colour Measurement - Fundamentals and Applications in Food Industry: A Review

Vyawahare A, Jayaraj Rao K and Pagote CN

Colour is an important sensory attribute for acceptance of food products. For maintaining uniform colour and appearance of products, proper methods of colour measurement are essential. Some of the instruments commonly being used are colorimeters, spectrophotometers, comparator charts or colour discs which proved to be useful tools for colour measurement. However, objective colour measurement methods have undergone significant changes in recent years with advancements in computer hardware and software and digitization technology. Flatbed scanners, cameras, various software like Adobe Photoshop are finding increased applications for colour measurement and monitoring. Fundamentals of computer vision and applications in various food products are reviewed here.