A composite model for accurate colorimetric characterization of liquid crystal displays |
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| Authors: | Jian‐qing Zhang Fang Cai Zhen Liu Guang‐yuan Wu Ming Zhu |
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| Affiliation: | 1. School of Optical‐Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, China;2. College of Engineering, Qufu Normal University, Rizhao, Shandong Province, China;3. College of Communication and Art Design, University of Shanghai for Science and Technology, Shanghai, China;4. Department of Materials and Chemical Engineering, Henan Institute of Engineering, Zhengzhou, China |
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| Abstract: | This paper presents a composite color‐characterization model for Liquid Crystal Displays (LCDs), considering channel dependence and poor chromaticity constancy of primaries. The proposed model consists of two parts, that is, the Piecewise Linear assuming Variation in Chromaticity (PLVC) model and a partition compensation error model. PLVC model can accurately predict CIEXYZ for primaries and calculate the CIEXYZ of any digital input values ( d r , d g , d b ) based on the channel independence assumption. In addition, the prediction error of PLVC model is compensated in RGB subspace using the partition compensation error model. The color difference Δ  was used to evaluate the accuracy of the model. The result of this experiment shows that PLVC model performs well for LCDs with channel independence and poor chromaticity constancy of primaries, compared with other characterization models. For channel dependence and poor chromaticity constancy LCDs, our result shows that proposed composite color‐characterization model also has better prediction accuracy than all other tested models. In this study, measurements were conducted in ambient light environment, and the experiment results consist with practical applications. |
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| Keywords: | display color‐ characterization Liquid Crystal Displays PLVC model partition compensation error in subspace |
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