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《北京理工大学学报(英文版)》 2001-02
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New Color-Difference Formula Based on CIECAM97s

HUAN Hui, LI Wei, ZHAO Da zun (National Key Lab of Color Science and Engineering, Beijing Institute of Technology, Beijing100081, China)  
To deduce a new color difference formula based on CIE 1997 Color Appearance Model(CIECAM97s), a color space J a 1 b 1 is first constructed with color appearance descriptors J,a,b in CIECAM97s. The new formula is then deduced in the space and named CDF CIECAM97s. The factors for lightness, chroma and hue correction in the formula are derived by linear regression according to BFD? CP data sets. It is found by statistical analysis that CDF CIECAM97s is in closer accordance with the visual assessments when compared with CMC(1∶1), CIE94 and CIE L *a *b * color difference formulae. Based on color appearance model, the new color difference formula can be used to predict color difference perception in a varity of different viewing conditions.
【Fund】: ationalNaturalScienceFoundation(6 99780 0 2 )
【CateGory Index】: O432.3
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