Evaluation of contrast metrics for liquid‐crystal displays under different viewing conditions |
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Authors: | Weige Lu Haisong Xu M Ronnier Luo |
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Affiliation: | 1. State Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, 310027 China;2. Department of Color Science, University of Leeds, Leeds, UK. |
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Abstract: | Abstract— A psychophysical experiment was carried out to assess the perceptual contrast on a large‐sized liquid‐crystal display (LCD) under nine phases of viewing conditions. Based on the results, six contrast models employing different color attributes or the index of just‐noticeable difference (JND) were developed. Their performances were also tested by the visual data of the nine phases, which indicated that the model CQ employing CIECAM02 brightness gives the best performance in predicting visual data under different viewing conditions among those models. A preprocessing step was also proposed to utilize the contrast model CQ conveniently in the practical contrast evaluation of LCDs. |
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Keywords: | Perceptual concept visual assessment viewing condition CIECAM02 liquid‐crystal display |
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