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题名: Recent progress in computing weighting tables for calculating CIE tristimulus values
作者: Li ZJ(李长军) ; Luo, MR ; Wang G(王葛)
作者部门: 先进制造技术研究室
会议名称: 20th Congress of the International-Commission-for-Optics
会议日期: August 21-26, 2005
会议地点: Changchun, China
会议主办者: Int Commiss Opt, Chinese Opt Soc, Changchun Inst Opt, Fine Mech & Phys, CAS, AFOSR Asia Off, Chinese Acad Engn, Chinese Acad Sci & Technol, European Opt Soc, IEEE LEOS, Natl Nat Sci Fdn China, Opt Soc Japan, Opt Soc Korea, Opt Soc Russia, Siberian, Opt Soc Amer, SPIE
会议录: ICO20: Illumination, Radiation, and Color Technologies
会议录出版者: SPIE-INT SOC OPTICAL ENGINEERING
会议录出版地: BELLINGHAM
出版日期: 2005
页码: 3302-3302
收录类别: CPCI(ISTP) ; EI
ISSN号: 0277-786X
ISBN号: 0-8194-6064-8
关键词: tristimulus values ; spectral reflectance function ; weighting tables ; colour differences
摘要: In industrial practice, it is often required that weighting tables were prepared in advance and tristimulus values can then be directly computed using summation of the products of the weights and measured reflectance values. The CIE has never provided precise procedure to calculate the weighting tables, and various discrepant methods have been used. Hence it is possible to obtain significantly different tristimulus values from the same set of spectral data. In order to overcome this problem, the American Society for Testing and Materials (ASTM Intl.) has published two sets of weighting tables known as Table 5 and Table 6 respectively. Each set includes 36 weighting tables covering 9 illuminants and two standard colorimetric observers at two wavelength intervals (10-nm and 20-nm). The weighting tables of Table 5 must be used with the reflectance corrected using the Steams and Steams (SS) method, and weighting tables of Table 6 must be used with the measured reflectance values without the SS correction. In practice, the illuminant used may be different from the CIE standard illuminants and users have to prepare their own weighting tables corresponding to the illuminant actually used. ASTM Intl. E2022-99 provided a standard calculation method to generate weighting tables of Table 5 for a non-standard illuminant. No standard procedure is given to calculate weighting tables of Table 6 since it consisted of Venable and Steams correction weights, and the Venable optimum weight is computed by an iterative procedure. In this artical, we will report some recent progress in generating weighting tables; compare the performances among the weighting tables such as ASTM Intl. Tables of Table 5 and Table 6, Optimum weighting tables, Least Square weighting tables, and Direct selection tables; quantify the possible colorimetric errors for each of the tables; and finally recommend for standardization of a method for generating weighting tables.
语种: 英语
产权排序: 1
内容类型: 会议论文
URI标识: http://ir.sia.cn/handle/173321/8258
Appears in Collections:工业信息学研究室_先进制造技术研究室_会议论文

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Recommended Citation:
李长军; Luo, MR; 王葛.Recent progress in computing weighting tables for calculating CIE tristimulus values.见:SPIE-INT SOC OPTICAL ENGINEERING.ICO20: Illumination, Radiation, and Color Technologies,BELLINGHAM,2005,3302-3302
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