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.
© 2013 IEEE
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