Searching for the preferred backlight intensity in liquid crystal displays with local backlight dimming

Jari Korhonen; Claire Mantel; Nino Burini; Soren Forchhammer

doi:10.1109/QoMEX.2013.6603221

Searching for the preferred backlight intensity in liquid crystal displays with local backlight dimming

Jari Korhonen, Claire Mantel, Nino Burini, Soren Forchhammer

Computing Science

Technical University of Denmark

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

2 Citations (Scopus)

Abstract

Local backlight dimming is one of the most promising techniques for reducing power consumption and improving contrast characteristics of liquid crystal displays (LCD). In practice, due to light diffusion and a smaller number of backlight sources than pixels, local backlight dimming must often trade-off between leakage of light in dark pixels and clipping of luminance in bright pixels. Only few studies have analyzed the subjective preferences between different luminance and contrast levels. In this paper, we present a method for defining the perceptually optimal backlight level via subjective experimentation. As expected, the results show a clear correlation between image brightness and optimal backlight intensity; however, a large range of individual preferences was observed.

Original language	English
Title of host publication	2013 Fifth International Workshop on Quality of Multimedia Experience (QoMEX)
Publisher	IEEE Press
Pages	118-123
Number of pages	6
ISBN (Electronic)	978-1-4799-0738-0
DOIs	https://doi.org/10.1109/QoMEX.2013.6603221
Publication status	Published - 2013
Event	2013 5th International Workshop on Quality of Multimedia Experience, QoMEX 2013 - Klagenfurt am Worthersee, Austria Duration: 5 Jul 2013 → 7 Jul 2013

Conference

Conference	2013 5th International Workshop on Quality of Multimedia Experience, QoMEX 2013
Country/Territory	Austria
City	Klagenfurt am Worthersee
Period	5/07/13 → 7/07/13

Keywords

High dynamic range display
Local backlight dimming
Visual quality assessment

Access to Document

10.1109/QoMEX.2013.6603221

Cite this

Korhonen, J, Mantel, C, Burini, N & Forchhammer, S 2013, Searching for the preferred backlight intensity in liquid crystal displays with local backlight dimming. in 2013 Fifth International Workshop on Quality of Multimedia Experience (QoMEX). IEEE Press, pp. 118-123, 2013 5th International Workshop on Quality of Multimedia Experience, QoMEX 2013, Klagenfurt am Worthersee, Austria, 5/07/13. https://doi.org/10.1109/QoMEX.2013.6603221

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abstract = "Local backlight dimming is one of the most promising techniques for reducing power consumption and improving contrast characteristics of liquid crystal displays (LCD). In practice, due to light diffusion and a smaller number of backlight sources than pixels, local backlight dimming must often trade-off between leakage of light in dark pixels and clipping of luminance in bright pixels. Only few studies have analyzed the subjective preferences between different luminance and contrast levels. In this paper, we present a method for defining the perceptually optimal backlight level via subjective experimentation. As expected, the results show a clear correlation between image brightness and optimal backlight intensity; however, a large range of individual preferences was observed.",

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AB - Local backlight dimming is one of the most promising techniques for reducing power consumption and improving contrast characteristics of liquid crystal displays (LCD). In practice, due to light diffusion and a smaller number of backlight sources than pixels, local backlight dimming must often trade-off between leakage of light in dark pixels and clipping of luminance in bright pixels. Only few studies have analyzed the subjective preferences between different luminance and contrast levels. In this paper, we present a method for defining the perceptually optimal backlight level via subjective experimentation. As expected, the results show a clear correlation between image brightness and optimal backlight intensity; however, a large range of individual preferences was observed.

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Searching for the preferred backlight intensity in liquid crystal displays with local backlight dimming

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