1 October 1996 Set theoretic estimation in color scanner characterization
Author Affiliations +
A set theoretic approach for the spectral characterization of a color scanner is described. These devices usually employ three channels to obtain a device dependent RGB (red, green, blue) image. To display/print an image, the device dependent RGB values must be correctly transformed to the color space of the target device. To determine accurate and efficient transformations for a number of devices, knowledge of the spectral sensitivity of the scanner is essential. Direct measurement of the sensitivity requires a set of expensive narrow band reflectances and is often infeasible. Methods that estimate the spectral sensitivity based on measurements with typical reflectance samples are therefore of interest. Due to the low dimensionality of the space of object reflectance spectra, this is a highly ill-conditioned problem. As a result, conventional estimation techniques that fail to take a priori knowledge into account perform rather poorly on this problem. A set theoretic approach that incorporates available a priori knowledge into the estimation framework yields better results. Results are presented for a simulated scanner characterization problem and for an actual characterization to demonstrate the increased accuracy compared with conventional methods.
Gaurav Sharma, Gaurav Sharma, H. Joel Trussell, H. Joel Trussell, } "Set theoretic estimation in color scanner characterization," Journal of Electronic Imaging 5(4), (1 October 1996). https://doi.org/10.1117/12.242623 . Submission:


Spectral reflectance estimation using a six-color scanner
Proceedings of SPIE (January 18 2009)
Signal processing methods in color calibration
Proceedings of SPIE (April 14 1994)
Color scanner performance trade-offs
Proceedings of SPIE (March 28 1996)
Water into wine: converting scanner RGB to tristimulus XYZ
Proceedings of SPIE (August 03 1993)

Back to Top