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研究生： 林俞伸
Lin, Yu-Sheng
論文名稱： 基於H.264/AVC可調式影像編碼之全畫面錯誤掩蓋方法
Whole Frame Error Concealment Based on the Scalable Video Coding of H.264/AVC
指導教授： 雷曉方
Lei, Sheau-Fang
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2010
畢業學年度： 98
語文別： 中文
論文頁數： 53
中文關鍵詞： 全畫面 、錯誤掩蓋 、可調式影像編碼
外文關鍵詞： whole frame, error concealment, scalable video coding (SVC)
相關次數： 點閱：149  下載：3 
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    • 可調式影像編碼可以動態的改變影像的解析度大小、影像品質與畫面更新率以配合異質而多樣的網路環境。然而，在不可靠的網路環境下常會發生封包的丟失而使得重建的壓縮影像畫質受到嚴重的影響。本論文提出了一個改良的可調式影像編碼全畫面錯誤掩蓋的方法。實驗結果顯示不論在客觀上或主觀上的比較，都較之前提出的方法有較好的表現。

    Scalable video coding (SVC) can dynamically change video resolution, image quality and frame rate to adopt heterogenous and various netwaork enviroments. However, packet losses often occur over unreliable networks and have severe impact on the reconstruction quality of compressed video. Our study proposed a modified whole frame error concealment method for SVC. The experiment results showed that the proposed method provide improvement, both objectively and subjectively, compared with earlier researches.

    摘要 I ABSTRACT II 誌謝 III 目錄 IV 表目錄 VI 圖目錄 VII 第一章 緒論 1 1.1 研究背景與動機 1 1.2 論文章節組織 2 第二章 H. 264編碼標準與可調式影像編碼介紹 3 2.1 H.264編碼標準概述 3 2.2 可調式影像編碼(Scalable Video Coding) 4 2.2.1 H.264/SVC 可調式影像編碼 5 2.2.2 時間上可調性(Temporal Scalability) 6 2.2.3 空間上可調性(Spatial Scalability) 7 2.2.4 品質上可調性(Quality Scalability) 8 第三章 全畫面影像丟失之錯誤掩蓋算法 9 3.1. 全畫面影像丟失(Whole Frame Lost) 9 3.2 傳統的錯誤掩蓋方法 9 3.3 針對SVC全畫面影像丟失之錯誤掩蓋算法 10 3.3.1 Frame Copy (FC) 10 3.3.2 Temporal Direct (TD) 10 3.3.3 Enhanced Temporal Direct Method (ETDM) 12 3.3.4 Motion and residual upsampling (BLSkip) 14 第四章 全畫面丟失錯誤掩蓋算法之改進與實現 15 4.1 TD與ETDM運動補償方法之分析 15 4.2 改良的單層錯誤掩蓋演算法 18 4.3 考慮層間關係的錯誤掩蓋演算法 26 第五章 實驗結果分析 27 5.1 實驗模擬環境與設定 27 5.2 客觀上的比較 28 5.3 主觀上的比較 39 5.4 運算量的比較 48 第六章 總結 50 第七章 參考文獻 51

    [1] "Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbit/s - Part 2: Video," ISO/IEC 11172-2 (MPEG-1 Video), 1993.
    [2] "Generic coding of moving pictures and associated audio information - Part 2: Video," ISO/IEC 13818-2 (MPEG-2 Video), 1995.
    [3] J. Golston and A. Rao, "Video Compression: System Trade-Offs with H.264, VC-1 and Other Advanced CODECs," Texas Instruments White Paper, Aug. 2006.
    [4] "Advanced Video Coding for Generic Audiovisual Services," ITU-T Rec. H.264 & ISO/IEC 14496-10, 2003.
    [5] 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.
    [6] J. Ostermann, J. Bormans, P. List, D. Marpe, M. Narroschke, F. Pereira, T. Stockhammer, and T. Wedi, "Video coding with H. 264/AVC: tools, performance, and complexity," IEEE Circuits and Systems Magazine, vol. 4, pp. 7-28, 2004.
    [7] G. J. Sullivan and T. Wiegand, "Video compression - From concepts to the H.264/AVC standard," Proceedings of the IEEE, vol. 93, pp. 18-31, Jan. 2005.
    [8] D. Marpe, T. Wiegand, and G. J. Sullivan, "The H.264/MPEG4 advanced video coding standard and its applications," IEEE Communications Magazine, vol. 44, pp. 134-143, Aug. 2006.
    [9] H. Schwarz, D. Marpe, and T. Wiegand, "Overview of the Scalable Video Coding Extension of the H.264/AVC Standard," IEEE Trans. Circuits Syst.Video Technol., vol. 17, pp. 1103-1120, 2007.
    [10] "Coding of Audio-Visual Objects - Part 2: Visual," ISO/IEC 14496-2 (MPEG-4 Visual), 1999.
    [11] Y. Chen, K. Xie, F. Zhang, P. Pandit, and J. Boyce, "Frame loss error concealment for SVC," Journal of Zhejiang University-Science A, vol. 7, pp. 677-683, 2006.
    [12] J. W. Suh and Y. S. Ho, "Error concealment based on directional interpolation," IEEE Trans. Consumer Electron., vol. 43, pp. 295-302, Aug. 1997.
    [13] W. M. Lam, A. R. Reibman, and B. Liu, "Recovery of lost or erroneously received motion vectors," in Proc. IEEE Int. Conf. Acoustics, Speech, and Signal Process., 1993, pp. 417-420.
    [14] J. Feng, K. Lo, and H. Mehrpour, "Error concealment for MPEG video transmissions," IEEE Trans. Consumer Electron., vol. 43, pp. 183-187, May 1997.
    [15] C. S. Park, J. Ye, and S. U. Lee, "Lost motion vector recovery algorithm," in Proc. IEEE Int. Symp. Circuits and Systems, 1994, pp. 229-232.
    [16] Y. Chen, K. Xie, and J. Boyce, "Frame loss error concealment for SVC," Joint Video Team (JVT), Doc. JVT-Q046, 2005.
    [17] X. Ji, D. Zhao, and W. Gao, "Concealment of whole-picture loss in hierarchical B-picture scalable video coding," IEEE Trans. Multimedia, vol. 11, pp. 11-22, 2009.
    [18] J. Vieron, M. Wien, and H. Schwarz, "JSVM 8_6 software " Joint Video Team (JVT), Doc. JVT-U202 2006.
    [19] S. Wenger, "Error patterns for internet experiments," ITU Telecom- munications Standardization Sector, Doc. Q15-1-16rl, Oct. 1999.

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