跳到主要內容

簡易檢索 / 詳目顯示

回結果列表
研究生： 譚皓文
Hao-Wen Tan
論文名稱： H.264/AVC畫面內適應性降取樣壓縮編碼之研究
Study of an Intra Frame Video Coding in H.264/AVC
指導教授： 林銀議
Yinyi Lin
口試委員:
學位類別： 碩士
Master
系所名稱： 資訊電機學院 - 通訊工程學系
Department of Communication Engineering
畢業學年度： 100
語文別： 中文
論文頁數： 73
中文關鍵詞： H.264/AVC 、畫面內預測模式 、降取樣編碼
外文關鍵詞： intra frame, video coding, H.264/AVC, down-sampling
相關次數： 點閱：13  下載：0 
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報

    • 在先前的研究[8]中，畫面基準下的降取樣壓縮編碼提升了H.264/AVC畫面內預測模式效能。我們藉由加入了四分之一降取樣模式和選擇是否加入預測錯誤補償畫面提出了一個畫面基準下最佳適應性降取樣編碼。但是影像畫面會因為畫面內部各區域所含有的特性不同，限制了畫面基準下的降取樣壓縮編碼的效能。因此，我們將降取樣壓縮編碼從畫面基準下應用到區塊基準下，並提出區塊基準下最佳適應性降取樣壓縮編碼。最後實驗結果顯示：相較於先前的研究[8]，我們所提出的演算法在畫面基準下平均增加了0.295%到3.09%的位元率增益；而在區塊基準下平均效能則增加了5.352%的位元率增益。

    In previous work [8], frame-based down-sampling video coding technique improves efficiency in intra frame of H.264/AVC. An algorithm of frame-based down-sampling video coding is proposed to enhance the efficiency: the quarter mode and not to add prediction error are considered in it. However, frames would limit the efficiency because every region in frame might have a different character. We apply down-sampling video coding technique from frame-based into block-based, proposing a block-based algorithm of down-sampling video coding. The experiments show the frame-based algorithm, comparing with [8], achieves 3.09% of BD-bitrate saving in average, and the block-based algorithm further improves coding performance (5.352% of BD-bitrate saving in average).

    第一章 緒論 1.1 視訊壓縮標準簡介 1 1.2 動機與目的 2 1.3 論文架構 3 第二章 H.264編解碼介紹與降取樣壓縮編碼之文獻探討 2.1 H.264視訊編碼系統簡介 4 2.1.1畫面內(Intra)預測模式 6 2.2 降取樣壓縮編碼之相關文獻回顧 10 2.2.1 水平降取樣壓縮編碼 11 2.2.2 最佳方向選取降取樣壓縮編碼 16 第三章 畫面基準(Frame-based)下之適應性降取樣壓縮編碼研究 3.1 預測錯誤(prediction error)補償對畫質的影響 22 3.2 四分之一(quarter)降取樣壓縮 25 3.2.1 四分之一降取樣無預測錯誤之演算法 25 3.2.2四分之一降取樣有預測錯誤之演算法 28 3.3 畫面基準下最佳適應性降取樣演算法 33 3.4 實驗結果 39 第四章 區塊基準(Block-based)下之適應性降取樣壓縮編碼研究 4.1 區塊(block)基準下之降取樣 49 4.1.1區塊基準下之降取樣演算法 52 4.1.2無預測錯誤補償之現象分析 57 4.1.3有預測錯誤補償之現象分析 61 4.2 區塊基準下最佳適應性降取樣演算法 62 4.3 實驗結果 66 第五章 結論 71 參考文獻 72

    [1] “Generic coding of moving pictures and associated audio information,” ISO/IEC 13818-2: Video (MPEG-2), May 1996.
    [2] “Video coding for low bit rate communication, version 1,” ITU-T recommendation H.263, 1995.
    [3] “Coding of audio-visual objects - Part 2: Visual,” in ISO/IEC 14496-2 (MPEG-4 Visual Version 1), Apr. 1999.
    [4] “Draft ITU-T recommendation and final draft international standard of joint video specification (ITU-T Rec. H.264 | ISO/IEC 144496-10 AVC),” Joint Video Team of ISO/IEC and ITU-T, Mar. 2003.
    [5] “Advanced video coding for generic audiovisual services”(ITU-T Rec. H.264| ISO/IEC 144496-10 AVC), Joint Video Team of ISO/IEC and ITU-T, Mar. 2005.
    [6] T. Wiegand, G. J. Sullivan, G. Bjontegaard and A. Luthra, “Overview of the H.264/AVC video coding standard,” IEEE Trans. Circuits Syst. Video Technol., vol. 13, pp. 560-576, Jul. 2003.
    [7] J. Y. Lee, J. Lee, H. Wey and D. Park, “A novel coding scheme for intra pictures of H.264/AVC,” in Proc. IEEE ICIP, Dec. 2010, pp. 62-65.
    [8] Y. Piao and H. W. Park, “Adptive interpolation-based divide-and-predict intra coding for H.264/AVC,” IEEE Trans. Circuits Syst. Video Technol., vol. 20, pp. 1915-1921, Dec. 2010.
    [9] S. Ma, L. Zhang, X. Zhang and W. Gao, “Block adaptive super resolution video coding,” in Proc. IEEE PCM, 2009, LNCS 5879, pp. 1048-1057
    [10] Y. Ye and M. Karczewicz, “Improved H.264 coding based on bi-directional intra prediction, directional transform, and adaptive coefficient scanning,” in Proc. IEEE ICIP, Oct. 2008, pp. 2116-2119.
    [11] Z. Gang, G. Li and Y. He, “The intra prediction based on sub block,” in Proc. IEEE ICSP, Aug. 2004, vol. 1, pp. 467-469.
    [12] T. Shiodera, A. Tanizawa and T. Chujoh, “Block based extra/inter-polating prediction for intra coding,” in Proc. IEEE ICSP, Sept. 2007, vol. 5, pp. 445-448.
    [13] Z. Nan, Y. Baocai, K. Dehui and Y. Wenying, “Spatial prediction based intra-coding,” in Proc. IEEE ICME, June 2004, vol. 1, pp. 97-100.
    [14] T. K. Tan, C. S. Boon and Y. Suzuki, “Intra prediction by template matching,” in Proc. IEEE ICIP, Oct. 2006, pp. 1693-1696.
    [15] T. K. Tan, C. S. Boon and Y. Suzuki, “Intra prediction by averaged template matching predictors,” in Proc. IEEE CCNC, Jan. 2007, pp. 405-409.
    [16] Y. Zheng, P. Yin, O. D. Escoda, X. Lin and C. Gomila, “Intra prediction using template matching with adaptive illumination compensation,” in Proc. IEEE ICIP, Oct. 2008, pp. 125-128.
    [17] J. Balle and M. Wien, “Extended texture prediction for H.264/AVC intra coding,” in Proc. IEEE ICIP, Sept. 2007, vol. 6, pp. 93-96.
    [18] V. Drugeon, T. Wedi and T. Palfner, “High precision edge prediction for intra coding,” in Proc. IEEE ICIP, Oct. 2008, pp. 1620 - 1623.
    [19] Y. M. Lee, J. D. Wu and Y. Lin, “An improved SATD-based Intra mode decision algorithm for H.264/AVC,” in Proc. IEEE ICASSP, April 2009, pp. 1029 - 1032.
    [20] Y. Lin, Y. M. Lee and C. D. Wu, “Efficient algorithm for H.264/AVC intra frame video coding,” in Proc. IEEE ISCAS, May 2010, pp. 2856 - 2859.
    [21] Y. M. Lee, Y. T. Sun and Y. Lin, “SATD-based intra mode decision for H.2647/AVC video coding,” IEEE Trans. Circuits Syst. Video Technol., vol. 20, pp. 463 - 469, March 2010.
    [22] Joint Video Team software JM12.2 http://iphome.hhi.de/suehring/tml/download/

    QR CODE
    :::