Non-Diagonal Colour Correction
Funt, B., and Jiang, H.,
"Non-Diagonal Colour Correction",
Proceedings ICIP 2003 International Conference on Image Processing,
Barcelona, Sept 2003.
A new color correction method is introduced which predicts how changing
the color of the scene illuminant will affect a camera’s RGB response.
Like diagonal transformation color correction methods, the new method
requires only 3-parameters. It therefore requires only the RGB color of
the two illuminants be known. The method models the 9-parameters of a
3-by-3 linear transformation using a 3-dimensional linear model
composed of 3 basis transformations. Experiments show that the method
works better than the standard diagonal model unless the camera sensors
are very sharply peaked, in which case the performance is essentially
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