低計算複雜度之 H.264/AVC 畫面跳張轉換編碼

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：64

、訪客IP：3.144.172.9

姓名

林成(Cheng Lin) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

低計算複雜度之 H.264/AVC 畫面跳張轉換編碼
(Low Computational Complexity Algorithm forH.264/AVC Video Frame-skipping Transcoding)

相關論文

★ 10Gb/s MM XFP光收發模組設計與實現	★ 資訊產品自動化測試之研究
★ 高電流密度鰭式氮化鎵高電子遷移率電晶體研究	★ 電子郵件及壓縮檔案解碼之研究
★ 渦輪碼在光學記錄系統上之應用	★ 離散餘弦轉換硬體架構之研究
★ 動態影像之錯誤隱藏研究	★ 即時性無失真壓縮編碼之研究
★ 類神經網路在手寫數字辨識之研究	★ 事後機率演算法則在資料儲存系統之研究
★ 紅外線傳輸協定及通道之研究	★ 低密度同位元檢查碼在數位資料儲存系統之研究
★ 一種新型的JPEG2000竄改偵測與還原技術	★ 即時性無失真壓縮之研究
★ 混合快速模式決策演算法之研究	★ 光學記錄MEPR2通道系統之時序恢復探討與研究

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

H.264/AVC 在多媒體裝置及網路應用上越來越重要，然而在不同網路
其傳輸頻寬不同下，如何使視訊串流滿足在不同頻寬是一個重要的問題。轉換編碼是其中一種可以克服此問題的技術。在本篇論文中使用畫面跳張轉換編碼將H.264 高位元率之視訊串流轉換編碼成H.264 低位元率之視訊串流，以適應不同頻寬限制。轉換編碼最直接的方法是不利用原始資訊幫助預測，而直接重新編碼，然而這樣會導致運算複雜度過高。若是直接將原始資訊再利用，雖然可以降低運算複雜度，但是編碼效能會大幅下降，所以我們利用原始資訊提出畫面跳張轉換編碼中階層式區塊模式決策與合成移動向量演算法以及多幅參考畫面選擇演算法，除了個別執行，更將三者合併。實驗結果顯示，演算法能在維持一定的畫面品質效能下，有效的加速轉換編碼時間。

摘要(英)

H.264/AVC supports many advanced compression techniques that can achieve better coding performance than the previous standards, and applications of H.264/AVC become popular and important in network multimedia services. However, because different networks might have different limitations of channel bandwidth, it is often needed to reduce the bit-rate of the coded video bit streams. Frame-skipping transcoding is one way to solve the problem. The most straightforward method for frame-skipping transcoding is to decode the video stream and re-encode the reconstructed video sequences after frame-skipping. Because H.264/AVC supports many advanced compression techniques, the computational complexity of the fully decoding and re-encoding process is extremely high.
If we prefer to reduce the computational complexity, reusing information existing in the original incoming video stream can achieve this goal. But the coding performance will decrease significantly. Therefore, we propose a hierarchical mode decision, motion vector composition and multiple reference frames selection, and then combine with them for frame-skipping transcoding. The experimental results show that our proposed algorithms can maintain the coding performance and speed up transcoding process simultaneously.

關鍵字(中)

★ 多幅參考畫面
★ 合成移動向量
★ 區塊模式決策
★ 畫面跳張轉換編碼
★ H.264/AVC視訊編碼

關鍵字(英)

★ H.264/AVC video coding
★ frame-skipping transcoding
★ mode decision
★ motion vector composition
★ multiple reference frame

論文目次

第一章緒論
1.1 H.264 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 基本原理及視訊轉換編碼器介紹
2.1 H.264 視訊編碼系統簡介5
2.1.1 畫面間(Inter)預測模式6
a. 可變區塊大小(variable block size)10
b. 非整數點移動向量(fractional motion estimation)11
c. 多幅參考畫面(multi-reference frame)12
2.1.2 畫面內(Intra)預測模式13
2.2 轉換編碼(Transcoding)系統簡介14
2.3 畫面跳張轉換編碼演算法文獻回顧17
第三章畫面跳張轉換編碼中區塊模式決策演算法
3.1 轉換編碼之旁資訊擷取20
3.2 區塊模式決策演算法文獻回顧23
3.3 階層式(Hierarchical)區塊模式決策演算法28
3.4 效能分析33
3.4.1 第一層至第二層效能33
3.4.2 第二層至第三層效能39
3.4.3 第三層至第四層效能45
3.4.4 綜合效能51
3.5 結論53
第四章畫面跳張轉換編碼中移動估測決策演算法
4.1 移動估測演算法文獻回顧54
4.2 合成移動向量之區域搜尋(zonal search)演算法58
4.3 綜合效能分析74
4.4 結論80
第五章移動估測之多幅參考畫面決策
5.1 相鄰多幅參考畫面選擇演算法81
5.2 效能分析83
5.3 結論86
第六章綜合效能與結論
6.1 綜合效能分析87
6.2 結論91
參考文獻

參考文獻

【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 Transactions on Circuits and Systems for Video Technology, vol. 13, pp. 560-576, Jul. 2003.
【7】C. D. Wu and Y. Lin, “Efficient inter/intra mode decision for H.264/AVC inter frame transcoding,” Proceedings of IEEE International Conference on Image Processing, Nov. 2009, pp. 3697-3700.
【8】A. Vetro, C. Charilaos and H. Sun, “Video transcoding architectures and techniques: an overview,” IEEE Signal Processing Magazine, vol. 20,no. 2, Mar. 2003.
【9】J. H. Jiang, Studying of Frame Skipping Transcoding for H.264, NCU, Taiwan, Jun. 2010.
【10】J. H. Jiang and Y. Lin, “Efficient Mode Decision for H.264/AVC Frame-skipping transcoding,” Proceedings of IEEE Region 10 TENCON, Nov. 2010, pp. 2062-2065.
【11】J. Youn, M. T. Sun and C. W. Lin, “Motion vector refinement for high-performance transcoding,” IEEE Transactions on Multimedia, vol. 1, no. 1, pp. 30-40, Mar. 1999.
【12】K. T. Fung, Y. L. Chan and W. C. Siu, “Low-complexity and high-quality frame-skipping transcoder for continuous presence multipoint video conference,” IEEE Transactions on Multimedia, vol. 6, no. 1, pp. 31-46,
Feb. 2004.
【13】K. T. Fung, Y. L. Chan and W. C. Siu, “New architecture for dynamic frame-skipping transcoder,” IEEE Transactions on Image Processing, vol. 11, no. 8, pp. 886-900, Aug. 2004.
【14】I. Shin, Y. L. Lee and H. W. Park, “Motion estimation for frame-rate reduction in H.264 transcoding,” Proceedings of IEEE Workshop on Software Technologies for Future Embedded and Ubiquitous Systems, May 2004, pp. 63-67.
【15】M. J. Chen, M. C. Chu and C. W. Pan, “Efficient motion estimation algorithm for reduced frame-rate video transcoder,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 12, no. 4, pp. 269-275, Apr. 2002.
【16 】W. J. Lee and W. J. Ho, “Adaptive frame-skipping for video transcoding,” Proceedings of IEEE International Conference on Image Processing, Sep. 2003, vol. 1, pp. I-165-8.
【17】J. Youn and M. T. Sun, “Motion estimation for high performance transcoding,” Proceedings of IEEE International Conference on Consumer Electronics, Jun. 1998, pp. 136-137.
【18】F. Lonetti and F. Martelli, “Motion vector composition algorithm in H.264 transcoding,” Proceedings of IEEE International Conference on Image Processing, Jun. 2007, no. 4, pp. 401-401.
【19】 J. N. Hwang, T. D. Wu and C. W. Lin, “Dynamic frame-skipping in video transcoding,” Proceedings of IEEE Second Workshop on Multimedia Signal Processing, Dec. 1998, pp. 616-621.
【20】J. Youn and M. T. Sun, “Fast motion vector composition method for temporal transcoding,” Proceedings of IEEE International Symposium on Circuits and Systems, Jun. 1999, vol. 4, pp. 243-246.
【21 】S. Yang, D. Kim, Y. Jeon and J. Jeong, “An efficient motion re-estimation algorithm for frame-skipping video transcoding,”Proceedings of IEEE International Conference on Image Processing, Sep. 2005, vol. 3, pp. III - 668-71.
【22】Joint Video Team software JM12.2
http://iphome.hhi.de/suehring/tml/download/
【23】G. Bjontegaard, “Calculation of average PSNR difference between RD curves”, ITU-T Q.6/16, Doc. VCEG-M33, Apr. 2001.

指導教授

林銀議(Yinyi Lin)

審核日期

2012-2-29

推文