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一種快速自適應(yīng)全局運(yùn)動估計(jì)算法的研究

張方,  肖嵩,  吳成柯

張方, 肖嵩, 吳成柯. 一種快速自適應(yīng)全局運(yùn)動估計(jì)算法的研究[J]. 電子與信息學(xué)報(bào), 2004, 26(4): 574-579.
引用本文: 張方, 肖嵩, 吳成柯. 一種快速自適應(yīng)全局運(yùn)動估計(jì)算法的研究[J]. 電子與信息學(xué)報(bào), 2004, 26(4): 574-579.
Zhang Fang, Xiao Song, Wu Cheng-ke. Study on a Fast Adaptive Global Motion Estimation Algorithm[J]. Journal of Electronics & Information Technology, 2004, 26(4): 574-579.
Citation: Zhang Fang, Xiao Song, Wu Cheng-ke. Study on a Fast Adaptive Global Motion Estimation Algorithm[J]. Journal of Electronics & Information Technology, 2004, 26(4): 574-579.

一種快速自適應(yīng)全局運(yùn)動估計(jì)算法的研究

Study on a Fast Adaptive Global Motion Estimation Algorithm

  • 摘要: 該文提出一種快速自適應(yīng)全局運(yùn)動估計(jì)算法。該方法從分析塊匹配運(yùn)動矢量統(tǒng)計(jì)特性出發(fā),通過 引入一個可預(yù)設(shè)置參數(shù),計(jì)算當(dāng)前幀與參考幀之間的基本平移矢量,并自適應(yīng)地采取混合全局運(yùn)動、局部運(yùn) 動估計(jì)的算法處理不同特征的源數(shù)據(jù).仿真結(jié)果表明,與傳統(tǒng)方法相比,該文算法復(fù)雜性低、處理延時(shí)小、 更利于硬件實(shí)現(xiàn),在PSNR變化不大的情況下,編碼效率有較大的改善.
    Abstract: An adaptive global motion estimation algorithm is proposed in this article. Based on the statistic feature of block matching moving vector, the method calculates the basic translation vector between current frame and referenced frame through a revisable parameter, and adaptively chooses processing algorithm for image sources with different characteristics. Simulation results show that the proposed algorithm not only has the ad-vantages of low complication, short delay and simple implementation, but also can highly improve the coding efficiency when PSNR varies slightly.
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  • Tse Y T, Baker R L. Global zoom/pan estimation and compensation for video compression. Proc.ICASSP, Toronto, Canada, May 1991: 2725-2728.[2]Hoetter M. Differential estimation of the global motion parameters zoom and pan. IEEE Trans.on Signal Processing, 1989, 16(2): 249-265.[3]Kook-yeol Yoo, Jae-kyoon Kim. A new fast local motion estimation algorithm using global motion[J].Signal Processing.1998, 68(2):219-224[4]Dufaux F, Konrad J. Efficient, robust and fast global motion estimation for video coding. IEEE Trans. on Image Processing, 2000, IP-9(3): 497-501.[5]Yuwen He, Bo Feng, Shiqiang Yang, Yichuo Zhong. Fast global motion estimation for global motion compensation coding. ISCAS 2001, Sydney, Australia, May 2001: 233-236.[6]Kook-yeol Yoo, Jae-kyoon Kim. New motion estimation and compensation algorithms for video compression combining global and local motions. Signal Processing: Image Communication, 1999,11(15): 201-216.[7]Kui Zhang, Josef Kittler. Global motion estimation and robust regression for video coding. Proc.Intl Conf. Acoustics, Speech, and Signal Processing, Seattle, WA, May 1998: 241-244.[8]Richter H, Smolic A, Stabemack B, Muller E. Real time global motion estimation for MPEG-4 video encoder. Proc. PCS2001, Picture Coding Symposium, Seoul, Korea, April 2001: 197-200.[9]Joerg Heuer, Andre Kaup. Global motion estimation in image sequences using robust motion vector field segmentation. Proceedings ACM Multimedia 99, Orlando, Florida, 30 October-5November 1999: 261-264.[10]ITU-T. Draft ITU-T recommendation H.263: video coding for low bitrate communication. International Telecommunication Union, 26 September 1997.
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出版歷程
  • 收稿日期:  2002-07-04
  • 修回日期:  2003-02-25
  • 刊出日期:  2004-04-19

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