Implementation of Multimode-Multilevel Block Truncation Coding for LCD Overdrive
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概要
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The Liquid-crystal display (LCD) overdrive technique has been utilized to reduce motion blur on a display via a reduction in the response time. However, to measure the variation of the pixel amplitudes, it is necessary to store the previous frame using a large frame memory. To downscale the frame memory, block truncation coding (BTC) is commonly employed due to the simplicity of its implementation, even if some visual artifacts may occur for image blocks with high frequency components. In this paper, we present a multimode-multilevel BTC (MBTC) technique that improves performance while maintaining simplicity. To improve the visual quality, we uniquely determine the quantization level and coding mode of each block according to the distribution of the luminance and chrominance amplitudes. For a compression ratio of 6: 1, the proposed method demonstrates higher coding efficiency and overdrive performance by up to 3.81dB in the PSNR compared to other methods.
- 2012-05-01
著者
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Lee Sanghoon
Department Of Biomedical Engineering College Of Medicine Dankook University
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Oh Taegeun
Department Of Electrical And Electronics Engineering Yonsei University
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Lee Sanghoon
Department Of Electrical And Electronics Engineering Yonsei University
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