Masking model for accurate colorimetric characterization of LCD

Tamura Nobuhiko, Tsumura Norimichi and Miyake Yoichi

Department of Information and Image Sciences, Chiba University, Inage-ku, Chiba, Japan

Journal of SID Vol 11 no.2, 333-339(2003)

Abstract
A color management system (CMS) such as ICC profile or sRGB space have been proposed for color transformation and reproduction of cross media. In such a CMS, accurate colorimetric characterization of a display device plays a critical role in achieving device-independent color reproduction. In the case of a CRT, colorimetric characterization based on a GOG model is accurate enough for this purpose. However, there is no effective counterpart in liquid-crystal displays (LCDs) since the characterization of an LCD has many difficulties, such as channel interaction and non-constancy of channel chromaticity. In this paper, a new method of display characterization is proposed which is applicable to the assessment of color reproduction of LCDs. The proposed method characterizes an electro-optical transfer function considering both channel interaction and non-constancy of channel chromaticity. Experimental results show that the proposed method is very effective in the colorimetry of LCDs.

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