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Volume: 1 | Article ID: art00111
Reproduction Model with Luminance Adaptation for Digital Cameras
  DOI :  10.2352/CGIV.2002.1.1.art00111  Published OnlineJanuary 2002

From real spectroradiometric data, we propose an algorithm to obtain camera opto-electronic conversion functions (camera OECFs) for different values of the lens aperture N from the opto-electronic conversion spectral functions (OECSFs). Working in the linear range of the inverse OECFs, we have found that the slope vs. lens aperture function is fitted by a second order polynomial. This happens also to the offset vs. lens aperture function. Therefore, we have included the inverse OECFs with luminance adaptation into a basic reproduction model, consisting in a 3×3 transform between the raw RGB space and CIE-XYZ space, opening the possibility of transforming any digital camera into an absolute tele-colorimeter.

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Francisco Martínez-Verdú, Jaume Pujol, Meritxell Vilaseca, Pascual Capilla, "Reproduction Model with Luminance Adaptation for Digital Camerasin Proc. IS&T CGIV 2002 First European Conf. on Colour in Graphics, Imaging, and Vision,  2002,  pp 529 - 533,

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