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The Scientific World Journal
Volume 2014, Article ID 671964, 9 pages
Research Article

A Color Gamut Description Algorithm for Liquid Crystal Displays in CIELAB Space

1School of Printing and Packing, Xi'an University of Technology, Xi’an 710048, China
2School of Automation and Information Engineering, Xi'an University of Technology, Xi’an 710048, China

Received 18 December 2013; Accepted 22 January 2014; Published 24 April 2014

Academic Editors: X. Meng, Z. Zhou, and X. Zhu

Copyright © 2014 Bangyong Sun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Because the accuracy of gamut boundary description is significant for gamut mapping process, a gamut boundary calculating method for LCD monitors is proposed in this paper. Within most of the previous gamut boundary calculation algorithms, the gamut boundary is calculated in CIELAB space directly, and part of inside-gamut points are mistaken for the boundary points. While, in the new proposed algorithm, the points on the surface of RGB cube are selected as the boundary points, and then converted and described in CIELAB color space. Thus, in our algorithm, the true gamut boundary points are found and a more accurate gamut boundary is described. In experiment, a Toshiba LCD monitor’s 3D CIELAB gamut for evaluation is firstly described which has regular-shaped outer surface, and then two 2D gamut boundaries ( CIE- boundary and CIE- boundary) are calculated which are often used in gamut mapping process. When our algorithm is compared with several famous gamut calculating algorithms, the gamut volumes are very close, which indicates that our algorithm’s accuracy is precise and acceptable.