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Proceedings Paper

Absolute colorimetric characterization of a DSLR camera
Author(s): Giuseppe Claudio Guarnera; Simone Bianco; Raimondo Schettini
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Paper 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.

Paper Details

Date Published: 7 March 2014
PDF: 7 pages
Proc. SPIE 9023, Digital Photography X, 90230U (7 March 2014); doi: 10.1117/12.2042172
Show Author Affiliations
Giuseppe Claudio Guarnera, Univ. degli Studi di Milano-Bicocca (Italy)
Simone Bianco, Univ. degli Studi di Milano-Bicocca (Italy)
Raimondo Schettini, Univ. degli Studi di Milano-Bicocca (Italy)

Published in SPIE Proceedings Vol. 9023:
Digital Photography X
Nitin Sampat; Radka Tezaur; Sebastiano Battiato; Boyd A. Fowler, Editor(s)

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