簡易檢索 / 詳目顯示
| 研究生： |
吳俊德 Jyun-de Wu |
|---|---|
| 論文名稱： |
H.264畫面內編碼及轉換編碼之研究 Study of H.264 intra frame coding and transcoding |
| 指導教授： |
林銀議
Yin-yi 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： | 96 |
| 語文別： | 中文 |
| 論文頁數： | 64 |
| 中文關鍵詞： | 畫面內編碼 、離散餘弦轉換 、轉換編碼 |
| 外文關鍵詞： | MPEG-2 to H.264 transcoding, intra coding, DCT, H.264 |
| 相關次數： | 點閱：24 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 |
H.264/AVC是由ITU-T以及MPEG所共同推舉的最新一代視訊編碼標準，與其它現有的視訊標準相比，H.264提供了一些新的編碼技術，像是畫面內模式預測，其主要的目的是用來去除畫面內的冗餘。然而這項技術在編碼過程中也耗費相當多的運算時間。因此，如何對畫面內預測作複雜度降低將是本篇論文討論的方向，在此我們提出一個依據低頻交流值來對畫面內作加速編碼，其中低頻交流值是由區塊內的離散餘弦轉換係數所取得的，用來事先判斷畫面內的預測尺寸，減少進入碼率失真成本計算的候選模式。後面將秀出實驗結果，我們發現在可接受的效能失真狀況下，能讓運算複雜度大幅降低。
H.264/AVC is the latest video coding standard recommended by ITU-T and MPEG. Compared with all existing video coding standard, H.264 provides some of new coding techniques, such as intra mode prediction. It plays an important role for reducing temporal redundancy. However, it takes most computational complexity in the coding process. In this paper, we propose an efficient intra mode prediction algorithm based on AClow components. It is acquired from DCT coefficients to judging intra prediction size in advance. The experiment results show that the significant reduction of computational time with negligible video quality degradation.
[1] “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, March 2005.
[2] “Video coding for low bit-rate communication: draft ITU-T recommendation H.263,”Telecommunication Standardization Sector of ITU, May 1996.
[3] “Coding of audio-visual objects - Part 2: Visual,” ISO/IEC 14496-2
(MPEG-4 Visual Version 1), Apr. 1999.
[4] W. Lin, A. Tsai, J. Wang and J. Yang, “A Simple Direction Detection Algorithm for Fast H.264 Intra Prediction,” Proc. IEEE TENCON, pp. 1-4, Oct. 2007
[5] Z. Wei, H. Li and K. N. Ngan, “An Efficient Intra Mode Selection Algorithm For H.264 Based On Fast Edge Classification,” Proc. IEEE ISCAS, pp. 3630-3633, May 2007.
[6] C. Kim, H. H. Shih and C. J. Kuo, “Feature-based intra-prediction mode
decision for H.264,” Proc. IEEE ICIP, pp. 769-772, Oct. 2004.
[7] “Generic Coding of Moving Pictures and Associated Audio Information,”
ISO/IEC 13818-2: Video (MPEG-2), May 1996.
[8] JVT Reference Software JM12.2
[9] C. Hwang, S. Zhuang and S.H. Lai, “Efficient Intra Mode Selection Using Image Structure Tensor for H.264/AVC,” Proc. IEEE ICIP, pp. V-289-V-292, Sept. 2007.
[10] B. La, M. Eom and Y. Choe, “Fast Mode Decision for Intra Prediction in H.264/AVC Encoder,” Proc. IEEE ICIP, pp. V-321-V-324, Sept. 2007.
[11] Y. T. Sun and Y. Lin, “SATD-based Intra Mode Decision for H.264/AVC Video Coding,” accepted in ICME 2008.
[12] H. Kalva and B. Petljanski, “Exploiting the Directional Features in MPEG-2 for H.264 Intra Transcoding,” IEEE Tran. on Consumer Electronics, Vol. 52, No. 2, MAY 2006.
[13] H. Kato, Y. Takishima, and Y. Kaji, “Fast Intra Mode Decision Method for MPEG to H.264 Transcoding,” Proc. IEEE ICIP, pp. 833-836, Oct. 2006.
[14] H. Kalva, B. Petljanski, and B. Furht, “Complexity Reduction Tools for MPEG-2 to H.264 Video Transcoding,” WSEAS Transactions on Information Science & Applications, Vol. 2, Issues, Mar. 2005, pp. 295-300.
[15] J. Xin, A. Vetro, H. Sun and Y. Su, “Efficient MPEG-2 to H.264/AVC Transcoding of Intra-Coded Video,” EURASIP Journal on Advances in Signal Processing, Vol. 2007, Article ID 75310, 12 pages
[16] D. kim, K. Jeon, J. Kim and J. Jeong, “A fast MPEG2-to-H.264 Transcoding Algorithm in Spatial Domain,” In IWAIT, 2006 , pp. 693-700
[17] X. Tang, Q. Du, and S. Shang, “Fast Intra Prediction Mode Decision for MPEG-2 to H.264 Transcoding,” Proc. IEEE ICME, pp. 428-431, July 2007.
[18] S. Yu, Z. Chen and Z. Zhuang, “Efficient Intra Mode Prediction Decision for MPEG-2 To H.264/AVC Transcoding,” Proc. IEEE ICSP, Vol. 2, 2006
