Visual Representation of Red Wine Color: Methodology, Comparison and Applications

A visual and easy-to-implement representation approach of red wine color is proposed in this work. The wine color under standard conditions, called feature color, was reproduced in the form of a circular spot. The feature color was further decomposed into two orthogonal aspects, the chromatic and light-dark components, characterized in the form of chromaticity distribution plane and lightness distribution plane, respectively. The color characterization of wine samples showed that this method well represented the color characteristics and can provide intuitive visual perception of wine color, in a way that is more reliable and convenient than the photographic method. The applications for monitoring the color evolution during winery and laboratory fermentation and the age discrimination of 175 commercial red wines suggest that this visual method is effective for color management and control of wine during fermentation and aging. The proposed method is a convenient way to present, store, convey, understand, analyze and compare the color information of wines.

Automated summary

In this work, a visual and easy-to-implement representation approach of red wine color is introduced. The feature color of wine under standard conditions is reproduced as a circular spot, which is further decomposed into chromatic and light-dark components. The wine color characterization using this method shows that it effectively represents the color characteristics and provides intuitive visual perception, making it more reliable and convenient than the photographic method. The applications for monitoring color evolution and age discrimination of red wines suggest that this visual method is effective for color management and control during fermentation and aging of wine.