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논문 기본 정보

저자정보
(Seoul National University) (Seoul National University) (Seoul National University)
저널정보
대한전자공학회 IEIE Transactions on Smart Processing & Computing IEEK Transactions on Smart Processing & Computing Vol.2 No.2
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    초록·키워드

    Bit-depth expansion is a process of enhancing the image quality by increasing the number of intensity levels. To solve this problem, a hybrid method is proposed, where the pixels are categorized into smooth and complex regions, and are processed using different methods. The pixels in the smooth region are reconstructed with a smooth prior, and a Bayesian estimator is used for the pixels in the complex region. The proposed method effectively removes the false contour artifacts while requiring less computation than conventional methods. In addition, the method shows good quantitative performance, and the PSNR gains over the best existing method are 1.45 dB and 0.26 dB for 4 bits and 3 bits expansion cases, respectively.

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      UCI(KEPA) : I410-ECN-0101-2015-560-001361177