Several methods of spectral sensitivity estimation for color image scanners are developed and evaluated. The estimation procedure involves response measurements of the scanner through a set of spectrally selective filters. These measurements form the observations for generalized inverse, smoothing, and Wiener estimation processes. Wiener estimation is found to provide the best results.
William K. Pratt and Clanton E. Mancill, "Spectral estimation techniques for the spectral calibration of a color image scanner," Appl. Opt. 15, 73-75 (1976)