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北海道大学サステナビリティ・ウィーク2009  >
2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議  >

A Fast Reversible Compression Algorithm for Bayer Color Filter Array Images

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タイトル: A Fast Reversible Compression Algorithm for Bayer Color Filter Array Images
著者: Chung, King-Hong 著作を一覧する
Chan, Yuk-Hee 著作を一覧する
発行日: 2009年10月 4日
出版者: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee
誌名: Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference
開始ページ: 825
終了ページ: 828
抄録: Most digital cameras perform color demosaicing and compression sequentially to yield a color output. Recent reports indicate that the alternative compression-then-demosaicing approach outperforms the demosaicing-then-compression approach in terms of image quality and complexity. This paper presents a fast reversible Bayer image compression algorithm for the alternative approach. A statistic-based prediction is proposed to de-correlate the wavelet subband coefficients. By learning from experiences, the proposed predictor can improve its prediction performance adaptively. A context-based Golomb Rice code is then proposed to compress the subband residues. Simulation results show that, as compared with the existing lossless CFA image coding methods, the proposed algorithm can achieve a low bitrate with lesser computation.
記述: APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Poster session: Image, Video, and Multimedia Signal Processing 3 (7 October 2009).
資料タイプ: proceedings
URI: http://hdl.handle.net/2115/39815
出現コレクション:2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議 (2009 APSIPA Annual Summit and Conference)

 

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