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研究生:吳健雄
研究生(外文):Chien-Hsiung Wu
論文名稱:H.264/AVC圖框內空間相關性決策快速演算法之研究
論文名稱(外文):A Study on Fast Intra-Prediction Mode Decision Method based on Block Correlation for H.264/AVC
指導教授:郭斯彥郭斯彥引用關係
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:電機工程學研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2007
畢業學年度:95
語文別:英文
論文頁數:65
中文關鍵詞:空間相關性快速演算法
外文關鍵詞:Intra PredictionBlock Correlation
相關次數:
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  • 收藏至我的研究室書目清單書目收藏:0
在論文中,針對H.264/AVC中圖框內空間性預測編碼,新提出一個快速模式決策演算法。為了加速找出給目標區塊適當的預測模式,我們利用目標區塊與其相臨的幾個區塊之相依性,來減少編碼過程中的計算複雜度;相臨的區塊包含幾個在空間上相依靠的區塊,和在時間上前一個圖框中相同位置的區塊。在演算法中,也利用了一種更新策略,在只增加一些計算的複雜度下增強視訊的品質。比較已存在JM的SATD模式決策演算法,這裡提議的演算法,在可接受的速度失真損失表現下,可以平均減少圖框內4x4編碼的運算複雜度到40%。
In this thesis, we propose a new fast mode decision method for intra-only H.264/AVC video coding. To speed up determining the optimal prediction mode for an intra-coded target block, we exploit the correlation between the target block and a set of adjacent blocks to reduce the computational complexity of the encoding process. The set of adjacent blocks consists of several spatial neighboring blocks in the same frame and one block in a previous frame positioned at the same spatial location as the target block. The method also utilizes a refreshing strategy not relying on correlation to enhance the video quality with little increase in computational complexity. Compared to the SATD-based (sum of absolute transformed differences) full mode decision algorithm used in the encoding model of H.264 (JM9.3), the proposed algorithm can reduce the computational complexity of intra coding by 40% on average with acceptable loss of rate-distortion performance.
口試委員會審定書 i
誌謝 ii
中文摘要 iii
Abstract iv
Chapter 1 Introduction 2
Chapter 2 H.264/AVC Overview 5
2.1. I-slice 8
2.1.1. Intra Spatial Prediction………………………………………………8
2.1.2. Transform and Quantization………………………………………10
2.1.3. Scanning……………………………………………………………12
2.1.4. Entropy coding……………………………………………………..13
2.1.5.1. UVLC coding……………………………………………….14
2.1.4.2. CAVLC coding……………………………………………..16
2.1.4.3. CABAC……………………………………………………..17
2.2. P-slices 18
2.5. Deblocking Filter 22
2.6. Error Resilience Tools 22
2.7. The Baseline, Main, and Extended Profiles in the First Version 23
2.8 The New High Profiles Defined in the FRExt Amendment 25
2.9. Levels 26
Chapter 3 Issues Related to H.264/AVC Intra Coding 29
3.1 The Performance of H.264/AVC Intra Prediction Coding 29
3.2 Intra-only Profiles for Professional Applications 30
3.3 Problems Related to Multiple Mode Decision 31
3.4 Computation Cost of Intra Prediction Modes 35
Chapter 4 Proposed Scheme 39
4.1 Basic idea I: Correlation of Modes 39
4.2 Basic idea II: Periodical Full Mode Selection 43
4.3 Summary of the Proposed Intra4x4 Mode Decision Process 45
Chapter 5 Experiment results 47
5.1 Experiment Conditions 47
5.2 Simulation Results 47
Chapter 6 Conclusions and Future Work 62
6.1 Conclusions 62
6.2 Future Work 63
Reference 64
[1] “Draft ITU-T recommendation and final draft international standard of joint video specification (ITU-T Rec. H.264/ISO/IEC 14496-10 AVC) ,” in Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG, JVTG050r1,2003.
[2] 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, no. 7, pp. 560–576, Jul. 2003.
[3] Till Halbach, “Performance comparison: H.26L intra coding vs. JPEG2000,” in ISO/IEC JTC1/SC29/WG11 and ITU SG16 Q.6 JVT 4th Meeting Klagenfurt, Austria, July 2002.
[4] H. Yu, and L. Liu, “Advanced 4:4:4 Profile for MPEG4-Part10/H.264,” JVT-P017 (rev1), July 2005.
[5] H. Yu, and L. Liu, “Advanced 4:4:4 Profile for MPEG4-Part10/H.264,” JVT-U120 (rev1), Oct 2006.
[6] Joint Video Team Reference Software JM9.3 (2005 Jan.). [Online] Available: http://bs.hhi.de/suehring/tml/download/
[7] H. Zhu, C.K. Wu, Y.L. Wang and Y. Fang, “Fast Mode Decision for H.264/AVC based on Macroblock Correlation,” Advanced Information Networking and Applications, 2005. AINA 2005. 19th International Conference on Volume 1, 28-30 March 2005 Page(s):775 - 780 vol.1.
[8] Y.W. Hang, B.Y. Hsieh, T.C. Chen, L.G. Chen, “Analysis, Fast Algorithm, and VLSI Architecture Design for H.264/AVC Intra Frame Coder,” IEEE Trans. on Circuits and Systems for Video Tech., vol. 15, no. 3, March 2005.
[9] C.H. Tseng, H.M. Wang and J.F. Yang, “Enhanced Intra-4x4 Mode Decision for H.264/AVC Coders,” IEEE Trans. on Circuits and Systems for Video Tech., vol. 16, no. 8, March 2006.
[10] K. Bruce, L. Cardelli and B. Pierce, “Comparing object encodings,” in Abadi, M., Ito, T., eds., “Theoretical Aspects of Computer Software” Vol. 1281 of Lecture Notes in Computer Science, Berlin Heidelberg New York, Springer-Verlag pp. 415–438, 1997.
[11] Iain E. G. Richardson, “H.264 and MPEG-4 Video Compression," John Wiley & Sons Ltd, 2003.
[12] Al, A.; Rao, B.P.; Kudva, S.S.; Babu, S.; Sumam, D.; Rao, A.V., “Quality and complexity comparison of H.264 intra mode with JPEG2000 and JPEG,” ICIP ''04. 2004 International Conference on Volume 1, 24-27 Oct. 2004 Page(s):525 - 528 Vol. 1.
[13] Gary J. Sullivan, Pankaj Topiwala, and Ajay Luthra, “The H.264/AVC Advanced Video Coding Standard: Overview and Introduction to the Fidelity Range Extensions,” SPIE Conference on Applications of Digital Image Processing XXVII Special Session on Advances in the New Emerging Standard: H.264/AVC, August, 2004.
[14] C.H Li, “A Fast Intra-Prediction Mode Decision Method for H.264/AVC,” NTU CSIE M.S Thesis, June 2005.
[15] Feng Pan, Xiao Lin, Susanto Radhardja, Keng Pang Lim, Z.G. Li, Dajun Wu, and Si Wu, ”Fast Mode Decision Algorithm for Intraprediction in H.264/AVC Video Coding,” IEEE Trans. on CSVT, vol. 15, No. 7, July 2005.
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