低複雜及高效能H.263 到H.264 轉碼器的分析及架構實現

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姓名

林學易(Hsueh-Yi Lin) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

低複雜及高效能H.263 到H.264 轉碼器的分析及架構實現
(Analysis and Architecture Design for Low Complexity and High Performance H.263 to H.264 Transcoder)

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摘要(中)

多媒體是現在當紅的領域。從各種商品的出現(如MP3, 數位電視等)及流行，各種影像的編碼格式也成了一個重要的話題。在這個網路發達的時代，當不同的平台要相互溝通時，編碼需要一些相對應的轉換以應付不同的編碼標準。H.263到H.264的轉碼是目前一個新起且快速發展的領域。當許多線上軟體(如網路電話、線上會議系統)將編碼從H.263升級到H.264時，這兩種編碼間的轉換越來越重要。在目前的H.263到H.264轉碼中，許多架構提出不同的想法。然而這些架構所考量的範圍都過於狹小，對於影像品質及複雜度並無法達到最佳的平衡。在我們所推出的系統(MDPP, modified decoding parameter propagation architecture)中，除了對複雜度的降低外，對影像品質也能達到一定的水準。在架構中，除了對解出來的參數充分利用外，另外兩階段的MV搜尋機制更使得影像模式能夠正確的偵測。從實驗結果中我們可以發現，複雜度比起reference架構少了99%；另外平均上來說我們的架構比起支援多種模式的架構快上5~8倍。在速度快的情況下，RD曲線圖顯示我們的架構能達到近乎reference架構的影像品質，而且在不同的影像下皆有不錯的表現。由這些實驗結果，我們相信提出來的架構能夠在影像品質及複雜度上取得最好的平衡。

摘要(英)

Transcoding from H.263 to H.264 is a rising topic recently when various applications(such as video phone, online conference) upgrade their systems from H.263 to H.264.Recently, several architectures for low complexity H.263 to H.264 transcoder are provided. However, trading between performance and complexity has not been optimal among them. In this report, existing architectures are reviewed with some numerical evaluation. Our proposed architecture, modi_ed decoding parameter propagation (MDPP), is based on pixel domain transcoding with 4 supported modes. It takes the advantages on high visual performance and no latency is introduced. In the proposed architecture, incoming information is thoroughly reused for minimum computation complexity. Performance is enhanced by two-level search to avoid any mode mismatch while 7 search iterations are removed. Extensive experimental results shows that 99% of complexity is marvelously reduced compared with the cascaded pixel domain transcoder. Besides, 5~8 speedup is achieved by MDPP over the multi-mode architectures. Referring to the video quality, our architecture reaches high performance among the conventional techniques. The proposed architecture is believed to be the optimal choice between performance and complexity.

關鍵字(中)

★ 轉碼

關鍵字(英)

★ H
★ 264
★ transcoding
★ mode decision
★ drift free
★ H.263

論文目次

1 Introduction . . . . . . . . . . . . . . . . . . . . . .1
1.1 Background . . . . . . . . . . . . . . . . . . . . . .1
1.2 Video coding overview . . . . . . . . . . . . . . . . 3
1.2.1 General encoding architecture . . . . . . . . . . . 3
1.2.2 H.263 and H.264 Overview . . . . . . . . . . . . . .3
1.3 Motivation for H.263 to H.264 Transcoder . . . . . . .6
1.4 Thesis Organization . . . . . . . . . . . . . . . . . 7
2 Related transcoding architectures . . . . . . . . . . . 8
2.1 Transform domain architecture . . . . . . . . . . . . 8
2.2 Pixel domain architecture . . . . . . . . . . . . . .11
2.2.1 Single mode support . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.2 Multiple mode support on search points reduction . 11
2.2.3 Multiple mode support on iterations reduction . . .12
2.3 Search iteration suppression . . . . . . . . . . . . 13
3 Performance evaluation among existing concepts . . . . 15
3.1 Complexity evaluation on transform and pixel domain transcoder . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Complexity bottleneck on pixel domain transcoding . .17
3.3 Performance and complexity analysis on pixel domain architectures . . . . . . . . . . . . . . . . . . . . . .18
4 Proposed architecture . . . . . . . . . . . . . . . . .20
4.1 Mode detection using skip mode and intra block information . . . . . . . . . . . . . . . . . . . . . . .20
4.2 Double looping for minimizing Lagrangian equation . .21
4.3 Overall architecture for the proposed algorithms . . 23
5 Experimental results and analysis . . . . . . . . . . .25
5.1 Performance comparison between different mode selection . . . . . . . . . . . . . . . . . . . . . . . .25
5.2 Performance evaluation for MCODD . . . . . . . . . . 26
5.3 Experimental results and performance analysis . . . .28
6 Conclusions . . . . . . . . . . . . . . . . . . . . . .35
References . . . . . . . . . . . . . . . . . . . . . . . 36

參考文獻

[1] I. Ahmad, X. Wei, Y. Sun, and Y.-Q. Zhang, "Video transcoding: an overview of various techniques and research issues", IEEE TRANSACTIONS ON MULTIMEDIA, vol. 7, no. 5, pp. 793 804, Oct. 2005.
[2] T.-H. Tsai and H.-Y. Lin, "Low complexity design on h.263 resolution downscaling using partial loop architecture". in Imecs, 2006, pp. 599 602.
[3] P. Yin, A. Vetro, B. Liu, and H. Sun, "Drift compensation for reduced spatial resolution transcoding". IEEE Trans. Circuits Syst. Video Techn., vol. 12, no. 11, pp. 1009 1019, 2002.
[4] C.-W. Ho, O. C. Au, S.-H. G. Chant, S.-K. Yip, and H.-M. Wong, "Low-complexity rate control for e cient h.263 to h.264/avc video transcoding", in 2006 ieee international conference on image processing, Oct. 2006, pp. 853 856.
[5] C. E. Shannon, "A mathematical theory of communication", The bell system technical journal, vol. 27, pp. 623 656, Oct. 1948.
[6] J. Bialkowski, M. Barkowsky, and NewAuthor2, "Overview of low-complexity video transcoding from h.263 to h.264", in 2006 ieee international conference on multimedia and expo.
[7] T. Ye, Y.-P. Tan, and P. Xue, "A low complexity h.263 to h.264 transcoder", in Proceedings of ieee international symposium on circuits and systems. ISCAS'06, May 2006.
[8] K.-T. Fung and W.-S. Siu, "Conversion between dct coefficients and it coe cients in the compressed domain for h.263 to h.264 video transcoding", in Ieee international conference on image processing, vol. 3. ICIP'05, Sep. 2005, pp. 57 60.
[9] T.-H. Tsai, H.-Y. Lin, Y.-X. Lee, and P.-H. Chen, "Complexity reduction of h.263 to h.264 transcoder with fast mode decision", in Ieee international symposium on circuits and systems. ISCAS'07, May 2007.
[10] K.-T. Fung, W.-C. Siu, and A. Constantinides, "Fast dct to it conversion using integer approximation for h.263 to h.264 video transcoding", in Proceedings of 2005 ieee
international workshop on vlsi design and video technology, May 2005, pp. 377 380.
[11] C.-W. Ho, O. C. Au, S.-H. G. Chant, H.-M. Wong, and S.-K. Yip, "Improved refinement search for h.263 to h.264/avc transcoding based on the minimum cost tendency
search", in Proceedings of ieee international symposium on circuits and systems, May 2006.
[12] K.-T. Fung and W.-S. Siu, "Low complexity h.263 to h.264 video transcoding using motion vector decomposition", in Ieee international symposium on circuits and systems, vol. 2. ISCAS'05, May 2005, pp. 908 -911.
[13] J. Bialkowski, M. Menden, M. Barkowsky, K. Illgner, and A. Kaup, "A fast h.263 to h.264 inter-frame transcoder with motion vector refinement", in Picture coding symposium, 2004, pp. 47 52.
[14] J. Bialkowski, A. Kaup, and K. Illgner, "Fast transcoding of intra frames between h.263 and h.264", in 2004 international conference on image processing, vol. 4.
ICIP'04, Oct. 2004, pp. 2785 2788.
[15] T.-Y. Kuo and C.-H. Chan, "Fast variable block size motion estimation for h.264 using likelihood and correlation of motion field", IEEE transactions on circuits and systems for video technology, 2006.
[16] H.264/avc software coordination, version jm10.2, 2005. [Online]. Available: http://iphome.hhi.de/suehring/tml/
[17] Chun Chen, Linjian Mo, Jiajun Bu, Shuiyong Lou, and Zhi Yang, "A novel fast predictive mode decision algorithm for h.264", in Proc. international symposium on signal processing and its applications, vol. 1, Sydney, Aug. 2005, pp. 243 246.
[18] Yangsoo Kim, Yoonsik Choe, and Yungho Choi, "Fast mode decision algorithm for h.264 using azcb prediction", in 2006 Digest of Technical Papers, International Conference on Consumer Electronics,ICCE'06, California, Jan. 2006, pp. 33 34.
[19] Y. CHENG, K. DAI, Z. WANG, and J. LU, "Motion search method based on zeroblock detection in h.264 avc", in Proc. The 8th International Conference on Computer Supported Cooperative Work in Design, vol. 2, Xiamen, May 2004, pp. 739 743.
[20] Video coding for low bit rate communication, ITU-T, 2005, series H.
[21] I. Richardson, "H.264 and mpeg-4 video compression". Wiley Press, Dec. 2003.
[22] H. S. "Malvar, A. Hallapuro, M. Karczewicz, and L. Kerofsky, Low-complexity transform and quantization in h.264/avc", IEEE transactions on circuits and systems for
video technology, vol. 13, pp. 598 603, Jul. 2003.
[23] T. Shanableh and M. Ghanbari, "Hybrid dct/pixel domain architecture for heterogeneous video transcoding", Signal Processing: Image Communication, vol. 18, no. 8,
pp. 601 620, Sep. 2003.
[24] Itu-t sg11, h.263+ public domain codec (tmn 3.2). university of british columbia, 1998. [Online]. Available: http://spmg.ubc.ca/h263plus

指導教授

蔡宗漢(Tsung-Han Tsai)

審核日期

2007-7-19

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