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基于運(yùn)動(dòng)矢量場(chǎng)和方向自適應(yīng)的快速運(yùn)動(dòng)估計(jì)算法

倪偉,  郭寶龍,  丁貴廣,  楊镠

倪偉, 郭寶龍, 丁貴廣, 楊镠. 基于運(yùn)動(dòng)矢量場(chǎng)和方向自適應(yīng)的快速運(yùn)動(dòng)估計(jì)算法[J]. 電子與信息學(xué)報(bào), 2006, 28(12): 2277-2282.
引用本文: 倪偉, 郭寶龍, 丁貴廣, 楊镠. 基于運(yùn)動(dòng)矢量場(chǎng)和方向自適應(yīng)的快速運(yùn)動(dòng)估計(jì)算法[J]. 電子與信息學(xué)報(bào), 2006, 28(12): 2277-2282.
Ni Wei, Guo Bao-long, Ding Gui-guang, Yang Liu. A Fast Motion Estimation Algorithm Based on Motion Vector Field and Direction Adaptive Techniques[J]. Journal of Electronics & Information Technology, 2006, 28(12): 2277-2282.
Citation: Ni Wei, Guo Bao-long, Ding Gui-guang, Yang Liu. A Fast Motion Estimation Algorithm Based on Motion Vector Field and Direction Adaptive Techniques[J]. Journal of Electronics & Information Technology, 2006, 28(12): 2277-2282.

基于運(yùn)動(dòng)矢量場(chǎng)和方向自適應(yīng)的快速運(yùn)動(dòng)估計(jì)算法

A Fast Motion Estimation Algorithm Based on Motion Vector Field and Direction Adaptive Techniques

  • 摘要: 該文提出了一種基于運(yùn)動(dòng)矢量場(chǎng)和方向自適應(yīng)的快速搜索算法。算法針對(duì)序列圖像的運(yùn)動(dòng)矢量場(chǎng)所具有的中心偏置性和時(shí)空相關(guān)性進(jìn)行預(yù)判，對(duì)靜止塊設(shè)定閾值直接中止搜索；根據(jù)運(yùn)動(dòng)類型自適應(yīng)選擇搜索起始點(diǎn)和搜索策略；采用了兩種新的混合搜索方法，對(duì)小運(yùn)動(dòng)和大運(yùn)動(dòng)宏塊使用線性-菱形搜索，對(duì)中等運(yùn)動(dòng)塊使用六邊形-菱形搜索算法，搜索模板具有強(qiáng)烈的方向特性。實(shí)驗(yàn)結(jié)果表明，該文算法的搜索速度和搜索精度優(yōu)于現(xiàn)有的快速運(yùn)動(dòng)估計(jì)算法，而搜索精度非常接近于全搜索法。
    Abstract: In this paper, a novel fast motion estimation algorithm called the motion vector field and direction adaptive search is proposed. According to center-bias property and spatial-temporal correlation of the motion vector field, the type of local motion activity is first determined. Based on the decision, different strategies are adaptively utilized. Stop criteria is introduced to detect the stationary macroblock, thus terminating current search immediately. Two novel search strategies with strong directional property are adopted, including the Line-Diamond Search for the macroblock with low or high motion activity, and the Hexagon-Diamond Search for the macroblock with middle motion. To achieve high searching speed for those macroblocks with large motion activity, the initial search center is predicted by the motion vector of its neighboring blocks. Experimental results show that the proposed algorithm provides faster speed and higher precision than most existing fast block-matching algorithm, while the distortion is almost the same as the FS.
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  • ISO/IEC/JTC1/SC29/WG11, ISO/IEC, Coding of Audio-Visual Objects-Part 2: Visual, ISO/IEC 14496-2(MPEG-4 Visual Version 1), Apr 1999.[2]Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG, Draft ITU-T recommendation and final draft international standard of joint video specification (ITU-T Rec.H.264/ISO/IEC 14496-10 AVC), JVT-G050, Pattaya, March 2003.[3]Liu L K, Feig E. A block-based gradient descent search algorithm for block motion estimation in video coding[J].IEEE Trans.on Circuits System Video Technology.1996, 6(8):419-423[4]Zeng R, Liou M L. A new three-step search algorithm for block motion estimation[J].IEEE Trans. on Circuits System Video Technology.1994, 4(8):438-442[5]Zhu S, Ma K K. A new diamond search algorithm for fast block-matching motion estimation[J].IEEE Trans. on Image Processing.2000, 9(2):287-290[6]Zhu C, Lin X, Chau L P. Hexagon-based search pattern for fast block motion estimation[J].IEEE Trans. on Circuits System Video Technology.2002, 12(5):349-355[7]Hosur P I.[J].Ma K K. Motion vector field adaptive fast motion estimation. International Conf. Information, Communication and Signal Processing99, Singapore city, Singapore.1999,:-[8]Cheung C H, Po L M. A Novel cross-diamond search algorithm for fast block motion estimation[J].IEEE Trans. on Circuits System Video Technology.2002, 12(12):1168-1177[9]Zhu S, Ma K K. A new diamond search algorithm for fast block-matching motion estimation[J].IEEE Trans Image Processing.2000, 9(2):287-290[10]Toruapis A M, Au O C, Liou M L. Predictive motion vector field adaptive search technique-Enhancing block based motion estimation. Visual Communications and Image Processing, 2001: 883-892.Tourapis A M.[J].Au O C. New results on zonal based motion estimation algorithmsAdvanced predictive diamond zonal search. IEEE International Sympos. Circuits Systems, Sydney, Australia.2001,:-[11]Ding G G, Guo B L. Motion vector estimation using line-square search block matching algorithm. Eurasip Journal on Applied Signal Processing, 2004, 11(9): 1750-1756.[12]劉海峰, 郭寶龍. 用于塊匹配運(yùn)動(dòng)估值的正方形-菱形搜索算法. 計(jì)算機(jī)學(xué)報(bào), 2002, 25(7): 747-752.[13]Cheung C H, Po L M. Novel cross-diamond-hexagonal search algorithms for fast block motion estimation. IEEE Trans. on Multimedia, 2003, 7(2): 25-29.[14]Han K, Chun B, Adaptive hexagon search pattern for block motion estimation. IEEE International Conf. Systems, Man and Cybernetics, Taejeon, Korea, 2003, (2): 1406-1409.
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出版歷程
  • 收稿日期:  2005-05-16
  • 修回日期:  2006-01-16
  • 刊出日期:  2006-12-19

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