基于光谱表示和独立成分分析的混合颜料成分分析方法

doi:10.3964/j.issn.1000-0593(2015)06-1682-08

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Abstract Reflectance spectrometry is a common method in composition analysis of mixed pigments. In this method, similarity is used to determine the type of basic pigments that constitute the mixed pigments. But its result may be inaccurate because it is easily influenced by a variety of basic pigments. In this study, a composition analysis method of mixed pigments based on spectrum expression and independent component analysis is proposed, and the composition of mixed pigments can be calculated accurately. First of all, the spectral information of mixed pigments is obtained with spectrometer, and is expressed as the discrete signal. After that, the spectral information of basic pigments is deduced with independent component analysis. Then, the types of basic pigments are determined by calculating the spectrum similarity between the basic pigments and known pigments. Finally, the ratios of basic pigments are obtained by solving the Kubelka-Munk equation system. In addition, the simulated spectrum data of Munsell color card is used to validate this method. The compositions of mixed pigments from three basic pigments are determined under the circumstance of normality and disturbance. And the compositions of mixture from several pigments within the set of eight basic pigments are deduced successfully. The curves of separated pigment spectrums are very similar to the curves of original pigment spectrums. The average similarity is 97.72%, and the maximum one can reach to 99.95%. The calculated ratios of basic pigments close to the original one. It can be seen that this method is suitable for composition analysis of mixed pigments.

Key words：Color;Composition analysis;Spectrum;Similarity;Independent component analysis;Munsell

Received: 2014-01-23 Accepted: 2014-04-18

ZTFLH:

TP391

Corresponding Authors: WANG Gong-ming E-mail: gongmingwang@126.com

Cite this article:

WANG Gong-ming,LIU Zhi-yong. A Composition Analysis Method of Mixed Pigments Based on Spectrum Expression and Independent Component Analysis [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(06): 1682-1689.

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https://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2015)06-1682-08 OR https://www.gpxygpfx.com/EN/Y2015/V35/I06/1682

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