Volume 32 Issue 05
May  2006
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Pu Juhua, Xiong Zhang, Liu Yongliet al. Fast motion estimation algorithm for H.264 with multi-references[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(05): 617-620. (in Chinese)
Citation: Pu Juhua, Xiong Zhang, Liu Yongliet al. Fast motion estimation algorithm for H.264 with multi-references[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(05): 617-620. (in Chinese)

Fast motion estimation algorithm for H.264 with multi-references

  • Received Date: 03 Jun 2005
  • Publish Date: 31 May 2006
  • H.264, in spite of its high quality, is very time-consuming due to its complex motion estimation. A fast motion estimation (FME) algorithm called valid-region-based FME (VRF) was proposed by exploring the motion continuity property in multiple reference frames (RFs). VRF used 3-step search(3SS) FME in the first RF and restricts 3SS FME in other RFs to select the best RF. Due to motion continuity, it employed full search in the best RF only in a much smaller area, called valid region. Experiments were done to justify the motion continuity property. Results show that, compared with H.264 full search, VRF reduced the number of search pixels for motion estimation up to 82% while it decreased peak signal to noise ratio(PSNR)0.24 dB and increased bit-rate 8.81% averagely. Compared with another FME, VRF reduced the number of search pixels for motion estimation up to 39% and bit-rate 5.17%, with the PSNR decreased 0.08 dB averagely.

     

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