Journal article
Optimal Local Dimming for LC Image Formation With Controllable Backlighting
Light 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.
To fully realize the potential of LED-backlit LCDs and reduce the artifacts that often occur in current systems, we propose a novel local dimming technique that can achieve the theoretical highest fidelity of intensity reproduction in either $\ell_{1}$ or $\ell_{2}$ metrics. Both the exact and fast approximate versions of the optimal local dimming algorithm are proposed.
Simulation results demonstrate superior performances of the proposed algorithm in terms of visual quality and power consumption.
Language: | English |
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Publisher: | IEEE |
Year: | 2013 |
Pages: | 166-173 |
ISSN: | 19410042 and 10577149 |
Types: | Journal article |
DOI: | 10.1109/TIP.2012.2211371 |
ORCIDs: | Forchhammer, Søren |
Image contrast Image reproduction Light emitting diode (LED) backlighting Liquid crystal display (LCD) Optimization SDG 7 - Affordable and Clean Energy
Attenuation Image quality LC image formation LED displays LED-backlit LCD LED-backlit liquid crystal display Light emitting diodes Measurement Power demand Visualization controllable backlighting energy consumption image processing image quality image reproduction intensity reproduction light emitting diode light emitting diode (LED) backlighting liquid crystal display (LCD) liquid crystal displays optimal local dimming algorithm optimization power consumption signal-dependent local dimming visual quality