A new weight factor spectrophotometric computer color matching

Dongcao Song; Xichang Wang; Yanjun Gong; Shangming Yang; Fangying Liang

doi:10.1117/12.573777

8 February 2005 A new weight factor spectrophotometric computer color matching

Dongcao Song, Xichang Wang, Yanjun Gong, Shangming Yang, Fangying Liang

Proceedings Volume 5637, Electronic Imaging and Multimedia Technology IV; (2005) https://doi.org/10.1117/12.573777
Event: Photonics Asia, 2004, Beijing, China

Abstract

On the basis of spectrophotometric color matching, the color difference weight factor is proposed and used in the thesis. The weight factor can be expressed as ω_j = {{[(x(λ_j)]² + [y(λ_j)]² + [z(λ_j)]²}[S(λ_j)]²}^½ and obtained according to the assumption of Σ_j(ΔX_j)²+(ΔY_j)²+(ΔZ_j)² -> min, i. e., in the range of visible spectrum it is assumed that the square sum of tri-stimulus value deviation produced by spectrum deviation at each wavelength is minimal.Through comparison with spectrophotometric color matching, we find a new weight factor. The new factor multiplied by the variety of reflectivity is the color difference, which is cause by the difference of reflectivity between standard color and matching color. So we name the weight factor: color difference weight factor. The prediction of computer shows the color difference produced by the weight factor is smaller than that produced by the two weight factors which were designed by Schmid and Strockash.

Citation Download Citation

Dongcao Song, Xichang Wang, Yanjun Gong, Shangming Yang, and Fangying Liang "A new weight factor spectrophotometric computer color matching", Proc. SPIE 5637, Electronic Imaging and Multimedia Technology IV, (8 February 2005); https://doi.org/10.1117/12.573777

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