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Volume: 4 | Article ID: art00002
Performance of Recent Color Difference Equations around a CIE Blue Color Center
  DOI :  10.2352/CGIV.2008.4.1.art00002  Published OnlineJanuary 2008

In 2004, an ISO committee found that insufficient data were available to make a decision on whether to recommend CIEDE2000 in place of DECMC. However, a provisional work item was initiated [1] to test independently the performance of the major color difference formulae specifically in the blue and near neutral regions. Accordingly, the objective of this work was to develop a new, comprehensive visual dataset around one blue color center, and to compare the performance of all the major formulae against the new dataset.A total of 5148 assessments using 66 textile sample pairs with small color differences (DE<5) were obtained. Each pair was visually assessed by 26 color normal observers in three separate sittings using a gray scale method. A third-degree polynomial equation was used to convert gray scale ratings to visual differences (DV). The performance of major formulae was evaluated based on a correlation coefficient (r) and the PF/3 measure at two lightness weights (KL or l) of 1 and 2. Correlation coefficients of 0.91, 0.92 were obtained for CIEDE2000 at KL of 1 and 2, which were the highest amongst the color difference equations examined although at KL (or l)=2, CIEDE2000 and BFD performed comparably. Using the PF/3 metric the BFD equation gave the best results at both lightness scales (37.46, and 42.46 respectively), however, at KL or l = 2, all major equations gave approximately the same performance.

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Renzo Shamey, Seung Geol Lee, David Hinks, Warren Jasper, "Performance of Recent Color Difference Equations around a CIE Blue Color Centerin Proc. IS&T CGIV 2008/MCS'08 4th European Conf. on Colour in Graphics, Imaging, and Vision 10th Int'l Symp. on Multispectral Colour Science,  2008,  pp 7 - 11,

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