Optimal local dimming for LED-backlit LCD displays via linear programming

Xiao Shu; Xiaolin Wu; Søren Forchhammer

doi:10.1117/12.912106

Optimal local dimming for LED-backlit LCD displays via linear programming

Xiao Shu, Xiaolin Wu, Søren Forchhammer

McMaster University

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

LED-backlit LCD displays hold the promise of improving the image quality while reducing the energy consumption with signal-dependent local dimming. To fully realize such potentials we propose a novel local dimming technique that jointly optimizes the intensities of LED backlights and the attenuations of LCD pixels. The objective is to minimize the distortion in luminance reproduction due to the leakage of LCD and the coarse granularity of the LED lights. The optimization problem is formulated as one of linear programming, and both exact and approximate algorithms are proposed. Simulation results demonstrate superior performances of the proposed algorithms over the existing local dimming algorithms.

Original language	English
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8305
Pages (from-to)	83050K
Number of pages	7
ISSN	0277-786X
DOIs	https://doi.org/10.1117/12.912106
Publication status	Published - 2012
Event	IS&T/SPIE Electronic Imaging : Visual Information Processing and Communication III - Hyatt Regency San Francisco Airport , Burlingame, California, United States Duration: 22 Jan 2012 → 26 Jan 2012

Conference

Conference	IS&T/SPIE Electronic Imaging : Visual Information Processing and Communication III
Location	Hyatt Regency San Francisco Airport
Country/Territory	United States
City	Burlingame, California
Period	22/01/2012 → 26/01/2012

Keywords

Liquid crystal display
LED backlighting
Image reproduction
Image contrast
Optimization

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Optimal local dimming for LED-backlit LCD displays via linear programming",

abstract = "LED-backlit LCD displays hold the promise of improving the image quality while reducing the energy consumption with signal-dependent local dimming. To fully realize such potentials we propose a novel local dimming technique that jointly optimizes the intensities of LED backlights and the attenuations of LCD pixels. The objective is to minimize the distortion in luminance reproduction due to the leakage of LCD and the coarse granularity of the LED lights. The optimization problem is formulated as one of linear programming, and both exact and approximate algorithms are proposed. Simulation results demonstrate superior performances of the proposed algorithms over the existing local dimming algorithms.",

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year = "2012",

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pages = "83050K",

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issn = "0277-786X",

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note = "IS&T/SPIE Electronic Imaging : Visual Information Processing and Communication III ; Conference date: 22-01-2012 Through 26-01-2012",

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TY - JOUR

T1 - Optimal local dimming for LED-backlit LCD displays via linear programming

AU - Shu, Xiao

AU - Wu, Xiaolin

AU - Forchhammer, Søren

PY - 2012

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N2 - LED-backlit LCD displays hold the promise of improving the image quality while reducing the energy consumption with signal-dependent local dimming. To fully realize such potentials we propose a novel local dimming technique that jointly optimizes the intensities of LED backlights and the attenuations of LCD pixels. The objective is to minimize the distortion in luminance reproduction due to the leakage of LCD and the coarse granularity of the LED lights. The optimization problem is formulated as one of linear programming, and both exact and approximate algorithms are proposed. Simulation results demonstrate superior performances of the proposed algorithms over the existing local dimming algorithms.

AB - LED-backlit LCD displays hold the promise of improving the image quality while reducing the energy consumption with signal-dependent local dimming. To fully realize such potentials we propose a novel local dimming technique that jointly optimizes the intensities of LED backlights and the attenuations of LCD pixels. The objective is to minimize the distortion in luminance reproduction due to the leakage of LCD and the coarse granularity of the LED lights. The optimization problem is formulated as one of linear programming, and both exact and approximate algorithms are proposed. Simulation results demonstrate superior performances of the proposed algorithms over the existing local dimming algorithms.

KW - Liquid crystal display

KW - LED backlighting

KW - Image reproduction

KW - Image contrast

KW - Optimization

U2 - 10.1117/12.912106

DO - 10.1117/12.912106

M3 - Journal article

SN - 0277-786X

VL - 8305

SP - 83050K

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - IS&T/SPIE Electronic Imaging : Visual Information Processing and Communication III

Y2 - 22 January 2012 through 26 January 2012

ER -

Optimal local dimming for LED-backlit LCD displays via linear programming

Abstract

Conference

Keywords

UN SDGs

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