Abstract: With an aim to solve the color distortion of a 3-CCD scanner, a new region-division calibration method is proposed
based on a modified calibration model of polynomial regression and used for color managements. This paper deals emphatically
with the modification of the polynomial regression model, the strategy of automatic region-division calibration according to
precision requirement and the design of color target for region-division calibration. Experiments show that the new method
can increasingly improve the measurement precision, thereby offering the possibility of automatic measurement for printer
color characteristics with a scanner rather than a spectrometer.

Key words: scanner calibration, color characteristics detecting, color management, polynomial regression