Modeling power-constrained optimal backlight dimming for color displays

Nino Burini, Ehsan Nadernejad, Jari Korhonen, Soren Forchhammer, Xiaolin Wu

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

In this paper, we present a framework for modeling color liquid crystal displays (LCDs) having local light-emitting diode (LED) backlight with dimming capability. The proposed framework includes critical aspects like leakage, clipping, light diffusion and human perception of luminance and allows adjustable penalization of power consumption. Based on the framework, we have designed a set of optimization-based backlight dimming algorithms providing a perceptual optimal balance of clipping and leakage, if necessary. The novel algorithms are compared with several other schemes known from the literature, using both objective measures and subjective assessment. The results show that the novel algorithms provide better quality at a given energy level or lower energy at a given quality level.

Original languageEnglish
Article number6494693
Pages (from-to)656-665
Number of pages10
JournalIEEE/OSA Journal of Display Technology
Volume9
Issue number8
Early online date5 Apr 2013
DOIs
Publication statusPublished - 1 Aug 2013

Keywords

  • Backlight dimming
  • color image
  • contrast
  • high dynamic range (HDR)
  • image quality
  • light leakage
  • light-emitting diode (LED) backlight
  • liquid crystal display (LCD)
  • optimization
  • power saving

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