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Half-pixel accuracy block matching motion estimation algorithms for low bitrate video communications

Mahdavi Nasab, H ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1109/CANET.2005.1598214
  3. Publisher: 2005
  4. Abstract:
  5. Motion estimation at fractional-pixel accuracy results in higher quality video sequences. However, the higher quality is achieved by more computations and increased required motion field bitrates. In this paper, new half-pixel accuracy block matching-based motion estimation algorithms are proposed to improve the rate-distortion characteristics of low-bitrate video communications. The proposed methods especially tend to decrease the required video bandwidth, with no degradation in quality of reconstructed image sequences. The key idea is to put a deeper focus on the origin (zero motion) based on the center-bias characteristics of low bitrate video motion fields. The experimental results show the efficiency of the proposed schemes. © 2005 IEEE
  6. Keywords:
  7. Algorithms ; Computation theory ; Image communication systems ; Image processing ; Image quality ; Image reconstruction ; Interpolation ; Fractional-pixel accuracy ; Video bandwidth ; Video motion ; Video sequences ; Motion estimation
  8. Source: First IEEE and IFIP International Conference in Central Asia on Internet, 2005, Bishkek, 26 September 2005 through 28 September 2005 ; Volume 2005 , 2005 ; 0780391799 (ISBN); 9780780391796 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/1598214