基于图像分析的双孢菇(白菇)白度测定方法
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(1.河南科技大学农业装备工程学院 农业工程系 河南洛阳 471003;2.河南省机械装备先进制造协同创新中心 河南洛阳 471003;3.河南省智能农业装备技术国际联合实验室 河南洛阳 471003)

作者简介:

姬江涛(1965—),男,博士,教授

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基金项目:

国家自然科学基金面上项目(51975186);国家重点研发计划项目(2019YFE0125100);河南省高等学校重点科研项目计划(19A416003)


Whiteness Measurement Method of Agaricus bisporus (White Mushroom) Based on Image Analysis
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(1.Department of Agricultural Engineering,College of Agricultural Equipment Engineering,Henan University of Science and Technology,Luoyang 471003,Henan;2.Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province,Luoyang 471003,Henan;3.Henan International Joint Laboratory of Intelligent Agricultural Equipment Technology,Luoyang 471003,Henan)

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    摘要:

    双孢菇的白度是评价其新鲜度和品质的重要指标。为实现双孢菇白度的准确评价,本文提出一种基于图像分析的双孢菇(白菇)白度测定方法。通过搭建D65标准光源成像系统,构建非线性白度标定模型,实现了图像RGB数值到CIE-XYZ三刺激值的转换,采用CIE甘茨白度公式实现白度的准确测定。使用8种灰度等级的色卡结合色度仪对图像系统进行标定,测定不同白度等级的双孢菇。结果表明,图像分析法与色度仪测量结果具有较高的相关性(r=0.99),测量色差ΔEab*<2。对于4组不同白度等级的双孢菇,各组间图像分析结果具有显著差异性(P<0.01)。利用图像分析不同贮藏条件下双孢菇的白度值,发现双孢菇的贮藏时间与白度值之间具有显著相关性,说明图像分析白度值可用于定量评价双孢菇的新鲜度。

    Abstract:

    The whiteness of Agaricus bisporus is an important index to evaluate its freshness and quality.In order to accurately evaluate the whiteness of Agaricus bisporus,a method based on machine image analysis was proposed.The imaging system of D65 standard light source is built,and the nonlinear whiteness calibration model is constructed.The conversion from RGB value to CIE-XYZ tristimulus value is realized,and then CIE Ganz whiteness formula is used to realize the accurate measurement of whiteness.The image system was calibrated by using 8 color cards with different gray levels in combination with a colorimeter,and the Agaricus bisporus with different whiteness grades were measured.The results showed that there was a high correlation between the results of image analysis and colorimeter (r=0.99),and the color difference ΔE*ab<2.For the four groups of Agaricus bisporus with different whiteness levels,the measurement results of image analysis were significantly different (P<0.01).At the same time,the whiteness value of Agaricus bisporus under different storage conditions was measured by image analysis.It was found that there was a significant correlation between the storage time and the whiteness value of Agaricus bisporus,which indicated that the whiteness value determined by image analysis can be used to quantitatively evaluate the freshness of Agaricus bisporus.

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姬江涛,孙经纬,赵凯旋,金鑫,马淏,朱雪峰.基于图像分析的双孢菇(白菇)白度测定方法[J].中国食品学报,2022,22(1):289-297

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  • 收稿日期:2021-01-20
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  • 在线发布日期: 2022-02-11
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