Colour is the first quality attribute of food evaluated by consumers,
and is therefore an important component of food quality
relevant to market acceptance. Rapid and objective
measurement of food colour is required in quality control for
the commercial grading of products. Computer vision is
a promising technique currently investigated for food colour
measurement, especially with the ability of providing a detailed
characterization of colour uniformity at pixel-based
level. This paper reviews the fundamentals and applications
of computer vision for food colour measurement. Introduction
of colour space and traditional colour measurements is also
given. At last, advantages and disadvantages of computer vision
for colour measurement are analyzed and its future trends
are proposed.