We propose a new algorithm to obtain the color matching functions of any digital camera, whit correct weights and white bal- ance, from the relative 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 environ- ments-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.
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