A method is described for calibrating a trichromatic halftone printing system in CIELAB colorimetric coordinates.The calibration method involves the use of three analytic equations rather than a LUT and interpolations.Calibration is done empirically by sending to the printing system a set of dot fraction vectors,[c m y].CIELAB [L*a*b*]vectors are measured for each printed sample,and a statistical and algebraic analysis then leads to three algebraic equations for converting [L*a*b*]vectors to [c m y]vectors.The quality and efficiency of this calibration technique are discussed in comparison to the more common LUT technique with interpolations.Calibration quality was measured both as the average and the maximum value of CIELAB .E between the printed and the calculated [L*a*b*]vectors.The potential utility of the algebraic method of calibration is discussed in terms of the tradeoff between colorimetric accuracy,computational speed,and the ease of performing the calibration.

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This article may be accessed on the publisher's website (additional fees may apply) at: http://www.imaging.org/store/epub.cfm?abstrid=5957 ISSN:1062-3701 Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

Document Type


Department, Program, or Center

Chester F. Carlson Center for Imaging Science (COS)


RIT – Main Campus