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Quality assessment of images displayed on LCD screen with local backlight dimming [PDF]
2013 Fifth International Workshop on Quality of Multimedia Experience (QoMEX), 2013 This paper presents a subjective experiment collecting quality assessment of images displayed on a LCD with local backlight dimming using two methodologies: absolute category ratings and paired-comparison. Some well-known objective quality metrics are then applied to the stimuli and their respective performance are analyzed. The HDR-VDP metric seems to
Claire Mantel +4 more
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Modeling LCD displays with local backlight dimming for image quality assessment
SPIE Proceedings, 2011 Traditionally, algorithm-based (objective) image and video quality assessment methods operate with the numerical presentation of the signal, and they do not take the characteristics of the actual output device into account. This is a reasonable approach, when quality assessment is needed for evaluating the signal quality distortion related directly ...
Jari Korhonen +3 more
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2010 Digest of Technical Papers International Conference on Consumer Electronics (ICCE), 2010 Local dimming techniques cause clipping artifacts in liquid crystal displays. To overcome the problems associated with the artifacts, the backlight luminance should be adjusted, but this process increases power consumption. In this paper we propose a novel backlight luminance compensation algorithm to reduce clipping artifacts by minimizing the ...
Hong, JJ, Kim, SE, Song, WJ
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51.3: Driving an Adaptive Local Dimming Backlight for LCD‐TV Systems
Digest of Technical Papers SID International Symposium, 2008Abstract LEDs in direct‐lit backlights require new driving concepts and local dimming algorithms for an optimal efficiency and high contrast of the panel. Special measures have to be taken to control the LEDs to compensate for drift of brightness and color in order to get a picture with no critical artifacts.
Hendriek Groot Hulze, Pierre de Greef
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Speedup of optimization-based approach to local backlight dimming of HDR displays
SPIE Proceedings, 2012 Local backlight dimming in Liquid Crystal Displays (LCD) is a technique for reducing power consumption and simultaneously increasing contrast ratio to provide a High Dynamic Range (HDR) image reproduction. Several backlight dimming algorithms exist with focus on reducing power consumption, while other algorithms aim at enhancing contrast, with power
Nino Burini +4 more
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Journal of Display Technology, 2014
Conventional backlight dimming methods can hardly be used in edge type backlight LCD. In order to perform a power efficient backlight local dimming in LCD of mobile devices, a novel backlight module structure called partitioned light guide (PLG) was proposed.
Sidan Du, Jia Liu
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Conventional backlight dimming methods can hardly be used in edge type backlight LCD. In order to perform a power efficient backlight local dimming in LCD of mobile devices, a novel backlight module structure called partitioned light guide (PLG) was proposed.
Sidan Du, Jia Liu
exaly +2 more sources
Displays, 2023 Human visual sensitivity based optimal local backlight dimming methodologies under different viewing ...
M A Rahman, Jaehee You
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Local dimming algorithm and color gamut calibration for RGB LED backlight LCD display
Optics and Laser Technology, 2011 A 32 in RGB LED backlight unit is developed A local dimming algorithm is designed for the backlight, and grid-noise artifacts in the LC driving signal are successfully removed with consideration of the backlight distribution to provide identical ...
Yang LM (杨立梅) +7 more
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A backlight simulator for an edge-type backlight unit in local dimming systems
2011 IEEE International Conference on Consumer Electronics (ICCE), 2011A local dimming backlight system achieves both high contrast and low power consumption. The backlight unit (BLU) consists of small blocks. The merits of the local dimming backlight system depend on the size of the blocks. In this work we propose a novel backlight simulator to examine the effect of block_size for edge-type BLUs.
Yun-Ki Han +4 more
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Optimal local dimming for LC image formation with controllable backlighting
IEEE Transactions on Image Processing, 2013Light emitting diode (LED)-backlit liquid crystal displays (LCDs) hold the promise of improving image quality while reducing the energy consumption with signal-dependent local dimming. However, most existing local dimming algorithms are mostly motivated by simple implementation, and they often lack concern for visual quality.
Xiao Shu +2 more
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