簡易檢索 / 詳目顯示
| 研究生： |
張惟焜 Wei-kun Chang |
|---|---|
| 論文名稱： |
HEVC低位元率視訊編碼之研究 Low Bitrate Video Coding for HEVC |
| 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 |
| 論文出版年： | 2014 |
| 畢業學年度： | 102 |
| 語文別： | 中文 |
| 論文頁數： | 115 |
| 中文關鍵詞： | HEVC 、低位元率 、模式決策 |
| 外文關鍵詞： | HEVC, Low Bitrate, Mode Decision |
| 相關次數： | 點閱：6 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 |
近年來，愈來愈多裝載高解析度裝置諸如智慧型手機、平板電腦及數位相機等，伴隨高解析度而來的是龐大的資料量，所以視訊壓縮技術儼然成為一門重要的課題。目前最新的視訊壓縮技術HEVC(High Efficiency Video Coding)，雖然比起以往的H.264/AVC有更好的壓縮率，但其編碼複雜度也增加許多。本論文為了降低編碼運算複雜度，所以提出簡單型零區塊模式決策演算法(Simple Zero Block Mode Decision, S_ZBMD)，利用零區塊的分佈特性，來選擇合適區塊大小及預測模式，以提前終止CU遞迴的切割來達到節省編碼時間之目的。為了提升HEVC標準架構的編碼效益，利用改良型雙向絕對誤差和(Modified Sum of Absolute Bi-Prediction Differences, MSABPD)演算法，以節省編碼傳輸位元。最後將MSABPD與S_ZBMD結合，由數據結果顯示，在低位元率下可以節省30.6%的編碼時間，BDBR又可以節省2.56%。
In recent years, lots of high resolution devices, such as smart phones, tablet, and digital camera…etc. Video compression technology becomes an important issue due to the significant increasing of data storage. A new generation of video compression standard HEVC has better performance than H.264. HEVC has improved video quality and compression efficiency, but the coding complexity also increases a lot. In this thesis, we proposed Simple Zero Block Mode Decision(S_ZBMD) in inter prediction to reduce HEVC computation complexity. We early terminate the CU size by using zero block distribution to select suitable block size and prediction mode for coding time saving. In order to improve the coding efficiency of standard HEVC, we use Modified Sum of Absolute Bi-Prediction Differences algorithm (MSABPD) to save transmitted bits. We eventually combine MSABPD and S_ZBMD to achieve both efficiency improving and time saving. Experimental results show that our proposed algorithm achieve 30.6% time saving and 2.56% BDBR saving compared with HEVC encoder in low bitrate.
[1] I. E. G. Richardson, H.264 and MPEG-4 Video Compression: VideoCoding for Next-generation Multimedia. Aberdeen, U.K.: John Wiley & Sons, 2003.
[2] JCT-VC, “High Efficiency Video Coding (HEVC) Test Model 11(HM11) Encoder Description, ” JCTVC-M1002, JCT-VC Meeting, Incheon, Apr. 2013
[3] T. Wiegand, G. J. Sullivan, G. Bjontegaard and A. Luthra, “Overview of the H.264/AVC video coding standard,” IEEE Trans. CSVT, vol. 13, no. 7, Jul. 2003.
[4] J. L. Lin, Y. W. Chen, Y. P. Tsai, Y. W. Huang and S. Lei, “Motion Vector Coding Techniques for HEVC,” in Proc. IEEE MMSP, Oct. 2011, pp. 1-6.
[5] L. Zhao, X. Guo, S. Lei, S. Ma and D. Zhao, “Simplified AMVP for High Efficiency Video Coding,” in Proc. IEEE ICIP, Nov. 2012, pp. 1-4.
[6] JCT-VC, “HM5: High Efficiency Video Coding (HEVC) Test Model 5 Encoder Description”, JCTVC-G1102, JCT-VC Meeting, Geneva, Nov. 2011.
[7] Y. Ismail and S. El-etriby, “Fast Diamond Search Algorithm for Real Time video Coding”, in Proc. IEEE ICNC, Feb. 2012, pp. 729-733.
[8] Y. M. Lee and Y. Lin, “Zero-block mode decision algorithm for H.264/AVC,” IEEE Trans. IP, vol. 18, no. 3, pp. 524-533, Mar. 2009.
[9] Y. M. Lee and Y. Lin, “An improved zero-block mode decision algorithm for H.264/AVC,” in Proc. IEEE ICIP, vol. 5, pp. V-293-V-296, Oct. 2007.
[10] W. Y. Chiu, Y. M. Lee and Y. Lin, “Efficient zero-block mode decision algorithm for High bit-rate coding in H.264/AVC,” in Proc. IEEE ISCAS, vol. 3, pp. 4189-4192, May 2010.
[11] T. H. Wu, “A Fast Inter-mode Decision Algorithm for HEVC ,” Master Thesis, National Central University, Jun. 2013.
[12] G. Bjontegarrd, “Calculation of average PSNR differences between RD curves,” in ITU-T SC16/Q6 13th VCEG meeting, No.VCEG-M33, Austin, TX, Apr. 2001.
[13] C. Y. Hong, “Direct Mode Decision for B Slice in H.264 and HEVC ,”Master Thesis, National Central University, Jul. 2012.
[14] S. Klomp, M. Munderloh, Y. Vatis, and J. Ostermann,“Decoder-side block motion estimation forH.264 / MPEG-4 AVC based video coding,”in Proc. IEEE ISCS, May. 2009, pp. 1641-1644.
[15] H. F. Ates and B. Cizmeci, “Decoder side true motion estimation for very low bitrate B-frame coding,” in Proc. IEEE ICIP, Sep. 2011, pp. 1673-1676.
[16] Y. Ling, J. Wang, Y. Liu and W. Zhang, “Spatial and temporal correlation based frame rate up-conversion,” in Proc. IEEE ICIP, Oct. 2008, pp. 909-912.
[17] JCT-VC, “Parsing robustness for Merge/AMVP,” JCTVC-F470, JCT-VC Meeting, Torino, Jul. 2011.
[18] C. H. Chien, “Motion Estimation for Inter Prediction in HEVC,”Master Thesis, National Central University, Jul. 2013.
[19] K. Hassan, B. Fatma, L. Hassen, B. A. Mohamed Ali and M. Nouri, “TZSearch pattern search improvement for HEVC motion estimation modules,” in Proc. IEEE ATSIP, Mar. 2014, pp. 95-99.
