Optimum Sensors for `Chromaticity' Constancy in the Pixel
ICIAP '09 Proceedings of the 15th International Conference on Image Analysis and Processing
Multispectral acquisition of large-sized pictorial surfaces
Journal on Image and Video Processing
Selection of optimal spectral sensitivity functions for color filter arrays
IEEE Transactions on Image Processing
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The effect of noise on the number of effective channels (color filters) used to record a color image is investigated. Transmittances of color filters are calculated that minimize the mean square error that occurs when estimating, from the recorded data, the colors in the image under a collection of viewing illuminants. Since the results indicate that a significant improvement in color correction accuracy is achieved by using four channels, there is good reason to consider using four-tuples for representation of colorimetric information