基于CIELAB色空间的红葡萄酒颜色直观表征
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国家自然科学基金项目(31401479)、国家林业科技推广项目(2014-45)、中央高校基本科研业务费专项资金项目(QN2013020)和西北农林科技大学试验示范站(基地)科技创新与成果转化项目(XNY2013-76)


Visualization for Representation of Red Wine Color Based on CIELAB Color Space
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    摘要:

    现有红葡萄酒颜色特征的表征方法,很难形象地描述和传递葡萄酒颜色信息。基于CIELAB色空间,构建了高清色彩平面(L*=60),以红葡萄酒颜色的彩度分布图、明度分布图和特征颜色图,并结合可见吸收光谱图,直观地表征红葡萄酒的颜色特征。采用该方法和传统的CIELAB参数分析法,对我国各产区10款陈酿型赤霞珠干红葡萄酒颜色特征的研究表明,该方法可以完整而直观地呈现CIELAB参数信息,并可给出具体的酒样特征颜色;供试酒样间颜色特征差异显著,但都存在颜色过快老化的问题。

    Abstract:

    The existing methods of color representation are seldom reported to vividly describe and transmit wine color information. A new method was proposed to visually represent red wine color employing charts of colorfulness distribution, lightness distribution and feature color, as well as the visible absorption spectrum of a wine. A highdefinition color plane determined by a* and b* axes when L*=60 was rendered in the CIELAB color space. The colorfulness distribution chart, carrying information of a*, b*, chroma and hue, was yielded when a* and b* color parameters of a wine were projected on this plane. The lightness distribution chart, indicating the light and shade degree of a wine, was rendered according to the L* value. The feature color chart, illustrating the true color of a wine under the condition of natural observation, made a comprehensive consideration of the effects of L*, a* and b* parameters. A comparative trial of the new visualized method and a traditional analysis of the CIELAB parameters was carried out to describe the color of 10 Vitis viniferaL.cv. Cabernet Sauvignon wines from representative regions of China. The results showed that the new method presented the CIELAB parameters information completely and visually, and it also exhibited a specific feature color for each red wine impressively. There were significant differences of the charts of colorfulness distribution, lightness distribution, feature color and the visible absorption spectra between the wine samples. Besides, all wine samples encountered a problem that the color aged faster than expected.

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李运奎,韩富亮,张予林,王华.基于CIELAB色空间的红葡萄酒颜色直观表征[J].农业机械学报,2017,48(6):296-301.

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  • 收稿日期:2016-10-13
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  • 在线发布日期: 2016-11-17
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