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Volume: 2 | Article ID: art00043
Sensitivity Curve Approximation using Linear Algebra
  DOI :  10.2352/CGIV.2004.2.1.art00043  Published OnlineJanuary 2004

Calibration of color cameras requires that a calibration pattern is recorded and color responsivity curves are estimated from the recorded data. Very often, these curves are sampled at discrete wave-length, so that the calibration problem can be written as a system of linear equations. The solution of the – usually overdetermined – problem is subject to a constrained optimization problem, as these curves need to have a certain shape. In this article we apply different methods to incorporate constraints into the estimation problem while still keeping the problem linear.

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D. Paulus, V. Hong, C. Idler, J. Hornegger, L. Csink, "Sensitivity Curve Approximation using Linear Algebrain Proc. IS&T CGIV 2004 Second European Conf. on Colour in Graphics, Imaging, and Vision,  2004,  pp 207 - 212,

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