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Special Section: Color Imaging Science
Volume: 46 | Article ID: art00004
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Calculation of the Color Matching Functions of Digital Cameras from Their Complete Spectral Sensitivities
  DOI :  10.2352/J.ImagingSci.Technol.2002.46.1.art00004  Published OnlineJanuary 2002
Abstract

We propose a new algorithm to obtain the color matching functions of any digital camera, with correct weights and white balance, from the relative scaling of their complete (3-D) spectral sensitivities obtained from real spectroradiometric data. Thanks to this algorithm, it is possible to predict the RGB digital levels of any digital camera in realistic illumination-scene environments—spatially non-uniform illumination field, variable chromaticity and large dynamic range of luminance levels—opening the possibility of transforming any digital camera into a tele-colorimeter. The illumination-scene test was the Macbeth Color-Checker Chart under three different light sources (halogen, metal halide and daylight fluorescent lamps), provided by a non-standard light box. The results confirmed that it is possible to predict any RGB digital levels exclusively by varying the f-number of the camera zoom lens.

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Francisco Martínez-Verdú, Jaume Pujol, Pascual Capilla, "Calculation of the Color Matching Functions of Digital Cameras from Their Complete Spectral Sensitivitiesin Journal of Imaging Science and Technology,  2002,  pp 15 - 25,  https://doi.org/10.2352/J.ImagingSci.Technol.2002.46.1.art00004

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Copyright © Society for Imaging Science and Technology 2002
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