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http://dx.doi.org/10.5573/ieie.2014.51.1.137

Histogram Matching-based Power Reduction Technique for OLED Display  

Choi, Songwoo (Department of Electrical Engineering, Dong-A University)
Kim, Young Hwan (Department of Electronic and Electrical Engineering, Pohang University of Science and Technology)
Kang, Suk-Ju (Department of Electrical Engineering, Dong-A University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.1, 2014 , pp. 137-144 More about this Journal
Abstract
In this paper, we propose the histogram matching-based power reduction technique considering the perceptual image quality. The conventional methods cannot analyze the clipping error of an image, and hence, they significantly degrade the image quality when pixels with the clipping error are concentrated on small area. The proposed method generates histograms for various images with different characteristics, and it calculates and stores the optimal clipping rate in a database. Then, it compares the histograms with that of an input image, and selects the histogram and clipping rate with the minimum difference to prevent the image quality degradation. In the experimental results, the proposed method improved the average PSNR and SSIM by up to 15.795 dB and 0.036, compared with the conventional methods.
Keywords
Organic light emitting diode; power reduction; liquid crystal display;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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