The performance of the CIE whiteness formula is evaluated visually by using the pair comparison method and compared with the new whiteness index suggested by Uchida. Twelve white samples are selected from 113 prepared white fabrics and their whiteness indices and tinting factors are calculated by CIE as well as Uchida whiteness indices. Some of the selected samples do not satisfy the CIE limitation conditions for evaluation of whiteness by this formula. Generally, the results of visual judgments show the priority of CIE formula over the Uchida index and this formula still correlate better than Uchida index with visual assessments for both in and the out of boundary white fabrics.
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Jafari et al. (2007) studied this question.
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