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Optimal nonnegative color scanning filters

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3 Author(s)
Sharma, G. ; Xerox Corp., Webster, NY, USA ; Trussell, H.J. ; Vrhel, M.J.

In this correspondence, the problem of designing color scanning filters for multi-illuminant color recording is considered. The filter transmittances are determined from a minimum-mean-squared orthogonal tristimulus error criterion that minimizes the color error in estimates obtained from noisy recorded data. Nonnegativity constraints essential for physical realizability are imposed on the filter transmittances. In order to demonstrate the significant improvements obtained, the resulting filters are compared with suboptimal filters reported in earlier literature

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Image Processing, IEEE Transactions on  (Volume:7 ,  Issue: 1 )