The Journal of The Institute of Image Information and Television Engineers
Online ISSN : 1881-6908
Print ISSN : 1342-6907
ISSN-L : 1342-6907
Gray-scale Reproduction of Display under Ambient Illumination
Masaru KanazawaIchiro Yuyama
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2000 Volume 54 Issue 3 Pages 444-451

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Abstract
The effectiveness of using a PLUGE (picture line-up generating equipment) signal to improve a display's grayscale reproduction under ambient illumination was investigated using two new metrics. Experimental results showed that adjusting a display's brightness with a PLUGE signal enables more precise adjustment than with a general image. A metric for the volume of reproducible color space was used to describe the area that a display can reproduce in the color space. A metric for the color reproduction reduction rate was used to describe how gray-scale reproduction deteriorates under ambient illumination. The values obtained for these metrics showed that adjusting the brightness with a PLUGE signal improves grayscale reproduction.
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