7 March 2014 Absolute colorimetric characterization of a DSLR camera
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Abstract
A simple but effective technique for absolute colorimetric camera characterization is proposed. It offers a large dynamic range requiring just a single, off-the-shelf target and a commonly available controllable light source for the characterization. The characterization task is broken down in two modules, respectively devoted to absolute luminance estimation and to colorimetric characterization matrix estimation. The characterized camera can be effectively used as a tele-colorimeter, giving an absolute estimation of the XYZ data in cd=m2. The user is only required to vary the f - number of the camera lens or the exposure time t, to better exploit the sensor dynamic range. The estimated absolute tristimulus values closely match the values measured by a professional spectro-radiometer.
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Giuseppe Claudio Guarnera, Simone Bianco, Raimondo Schettini, "Absolute colorimetric characterization of a DSLR camera", Proc. SPIE 9023, Digital Photography X, 90230U (7 March 2014); doi: 10.1117/12.2042172; https://doi.org/10.1117/12.2042172
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