Measuring Color with Machine Vision
Machine vision systems offer advantages over visual and instrumental analysis,including the ability to measure nonuniform colors and shapes and to inspect specific areas of the image.
Color is an important component of food quality—consumers initially accept or reject a food based on its color and other visual attributes—and can be measured by visual, instrumental, and machine vision methods.
However, visual observations may be unsatisfactory due to eye fatigue, poor color memory of subjects, lack of uniform lighting and standardized viewing conditions, and unavailability of trained judges, especially for routine large-scale color quality determination (Hutchings, 1999).
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