Reviewing food quality detection technology based on color

The color of food is an important outside characteristic of food's quality.The applications and existing problems of food's color detection technology,such as human visual method,color measuring instrument method and computer vision method,are reviewed in this paper.Firstly,the feasibility of color detection for food quality is described based on theory which is comprised of both color information acquiring method and visual perception of color.Secondly,the applications of both detection methods of color measuring instrument and computer vision in various fields of food industry are emphatically presented.Finally,the characteristics and limitations of these methods are analyzed and the potential development trends of computer vision method are prospected.