Selection of optimal spectral sensitivity functions for color filter arrays
IEEE Transactions on Image Processing
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The problem of the design of color scanning filters is addressed in this paper. The problem is posed within the framework of the vector space approach to color systems. The measure of the goodness of a set of color scanning filters presented in earlier work is used as an optimization criterion to design color scanning filters modeled in terms of known, smooth, nonnegative functions. The best filters are then trimmed using the gradient of the mean square ΔEab error to obtain filters with a lower value of perceptual error. The results obtained demonstrate the utility of the method