NDLI: Representations of Relative Display Gamut Size

Content Provider	IEEE Xplore Digital Library
Author	Senfar Wen
Copyright Year	2005
Abstract	Gamut size of a wide gamut display is usually represented with the ratio of its chromaticity triangle area and the chromaticity triangle area of a standard display in CIE xy color coordinates. Such a chromaticity area ratio (CAR) is a rough relative gamut size, because CIE xy is a nonuniform color coordinate system and display gamut is a volume in color space. The representation of relative gamut size with the ratio of the discernible color numbers in a display gamut and NTSC TV gamut is studied. This ratio is called the discernible color number ratio (DCNR). Discernible color number is counted with CIE94 color difference formula in CIELAB color space. It is found that CAR is larger than DCNR for the display with primary purity higher than NTSC primary purity. For example, the CAR of a practical light-emitting diode (LED) display with respect to NTSC TV is 7.8% overestimated, in which red, green, and blue LED primary wavelengths are 625, 520, and 470 nm, respectively; red, green, and blue LED bandwidths are 20, 40, and 30 nm, respectively. In addition, the DCNRs of wide gamut displays with respect to the object color of the same white illuminant are investigated. It is shown that the gamut size improvement for laser display compared with LED display is not significant.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	18
Ending Page	23
Page Count	6
File Size	377353
File Format	PDF
ISSN	1551319X
Volume Number	4
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bandwidth Plasma displays Liquid crystal displays HDTV TV Light emitting diodes Cathode ray tubes Phosphors Filters wide-gamut displays Color gamut laser displays LED displays
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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