Abstract
This paper presents a new method for dynamic backlight dimming that uses
multiple histograms for liquid crystal display (LCD) devices. The proposed
multi-histogram-based gray-level error control (MGEC) algorithm considers
the pixel distribution of an image using multiple histograms, thereby
improving the image quality. Additionally, we propose several techniques to
reduce the computational cost of the MGEC algorithm. In the experimental
results, the average peak signal-to-noise ratio (PSNR) of the proposed
method was improved by up to 8.144 dB compared to that of the benchmark
method, while the power consumption was reduced substantially. In addition,
when we applied the proposed techniques to reduce the computational cost of
the MGEC algorithm, the computation time was reduced by up to 95.801%
compared to that of the original algorithm.
© 2011 IEEE
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