CIE-XYZ fitting by multispectral images and mean square error minimization with a linear interpolation function

J. Conde, H. Haneishi, M. Yamaguchi, N. Oh, ama. , J. Baez

Abstract


We present a proposal to achieve accurate color reproduction by fitting the CIE-XYZ tristimulus values of a given color stimulus, and using the 16-band multispectral images, as well as the CIE-XYZ tristimulus values of a known color test chart. We propose a simple linear combination of the multispectral images as interpolation function, which is equivalent to fitting the data to a straight line in a 16-dimentional space. By using this interpolation function, we minimize the merit function of the mean error between the measured and estimated CIE-XYZ tristimulus values of the color test chart. We show, by making a visual comparison between the results achieved using this proposal and the results achieved using a spectral reflectance estimation technique, that the proposed interpolation function when using 16-channel multispectral images produces high quality results in terms of color reproduction fidelity.

Keywords


Multispectral images; CIE-XYZ tristimulus values fitting; interpolation function; mean square error minimization; color difference

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Revista Mexicana de Física

On line ISSN: 2683-2224

Bimonthly publication of Sociedad Mexicana de Física, A.C.
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