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乌斯特棉花大容量测试仪(HVI)所做的棉花颜色测试和实验室颜色分光光度计所做的测量具有相关性,分光光度计可对整个可见光谱范围内一定的波长间隔的反射率测量并报告样品的L*a*b*值。HVI测试的棉花颜色,具有两个参数特征,即光泽度或反射率(Rd)和黄度(+b)。来自美国农产品运销局(AMS)的标准瓷砖和校准棉样,代表的Rd和+b值范围广,分别使用AMS棉花项目的标准比色计和实验室颜色分光光度计测量棉花的颜色特征。考虑到斜率差异和偏移,发现标准CIE颜色参数(L*,b*)与主色度计的颜色参数(Rd,+b)分别具有很好的相关性。
The cotton color test done by the Uster Cotton Bulk Tester (HVI) is correlated with the measurements made by the lab color spectrophotometer, which measures the reflectance at a certain wavelength interval across the entire visible spectrum And reports the L * a * b * value of the sample. The cotton color tested by HVI has two parametric characteristics, namely gloss or reflectance (Rd) and yellowness (+ b). Standard tiles and calibrated cotton samples from the US Agency for Agricultural Products Marketing (AMS) represent a wide range of Rd and + b values and the color characteristics of cotton are measured using a standard colorimeter and a lab color spectrophotometer, respectively, of the AMS Cotton project. Considering the slope difference and offset, we find that the standard CIE color parameters (L *, b *) have good correlation with the color parameters (Rd, + b) of the primary colorimeter, respectively.