A simplified half pixel motion estimation algorithm based on the spatial correlation

  • Authors:

  • HyoSun Yoon;Miyoung Kim

  • Affiliations:

  • Department of Computer Science, Chonnam National University, Kwangju, Korea;Department of Computer Information Technology, Namdo Provincial College, Damgyang-Gun, Chonnam-Provice, Korea

  • Venue:
  • PCM'04 Proceedings of the 5th Pacific Rim Conference on Advances in Multimedia Information Processing - Volume Part II
  • Year:
  • 2004

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Abstract

Motion estimation which consists of integer pixel motion estimation and half pixel motion estimation is very computationally intensive part. To reduce the computational complexity, many methods have been proposed in both integer pixel motion estimation and half pixel motion estimation. For integer pixel motion estimation, some fast methods could reduce their computational complexity significantly. There remains, however, room for improvement in the performance of current methods for half pixel motion estimation. In this paper, a simplified half pixel motion estimation algorithm based on spatial correlations is proposed to reduce the computational complexity. According to spatially correlated information, the proposed method decides whether half pixel motion estimation is performed or not for the current block. Experimental results show that the proposed method outperforms most of current methods in computational complexity by reducing the number of search points with little degradation in image quality.