標題: Research of Color Distribution Index in CIEL*a*b* Color Space
作者: Jeng, Wei-De
Huang, Ting-Wei
Mang Ou-Yang
Lee, Tsang-Hsing
Hsieh, Yao-Fang
Kuo, Yi-Ting
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: color;color distribution index;gamma curve;bit depth
公開日期: 2010
摘要: The index for evaluating the ability of color reproduction is required. The color distribution index (CDI) was proposed to comment the display ability of color distribution of reproduction in CIE Lu'v' color space. A cell of Just Noticeable Difference (JND) for luminance and chromaticity (u'v') was proposed to qualify whether the reproduced colors are in some region of color volume of display. Human eye can perceive fewer colors at low luminance, however, the scalar of chromaticity (u'v') JND at low luminance was the same with the one at other luminance. CDI will be distorted at low luminance. In this paper, regarding perceptible vision at low luminance, we try to use chromaticity (a*b*) JND to replace chromaticity (u'v') JND. The color distribution will be discussed in CIE La*b* color space. We find that CDI at low luminance in CIE L*a*b* color space is higher than in CIE Lu'v' color space, as well as different gamma curves and different bit depths affect CDI. The displays are going to keep approaching 100% true color reproduction; hence the index for evaluating the ability of color reproduction is required.
URI: http://hdl.handle.net/11536/14787
http://dx.doi.org/10.1117/12.860389
ISBN: 978-0-8194-8294-5
ISSN: 0277-786X
DOI: 10.1117/12.860389
期刊: APPLICATIONS OF DIGITAL IMAGE PROCESSING XXXIII
Volume: 7798
Appears in Collections:Conferences Paper


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