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A Symmetric Motion Estimation Method by using the Properties of the Distribution of Motion Vectors

움직임 벡터 분포 특성과 블록 움직임의 특성을 이용한 대칭형 움직임 추정 기법

  • 윤효순 (전남대학교 전자컴퓨터공학부) ;
  • 김미영 (전남도립대학교 보건의료학과)
  • Received : 2016.11.15
  • Accepted : 2017.02.14
  • Published : 2017.03.28

Abstract

In video compression, Motion Estimation(ME) limits the performance of image quality and generated bit rates. However, it requires much complexity in the encoder part. Multi-view video uses many cameras at different positions. Multi-view video coding needs huge computational complexity in proportion to the number of the cameras. To reduce computational complexity and maintain the image quality, an effective motion estimation method is proposed in this paper. The proposed method exploiting the characteristics of motion vector distribution and the motion of video. The proposed is a kind of a hierarchical search strategy. This strategy consists of multi-grid rhombus pattern, diagonal pattern, rectangle pattern, and refinement pattern. Experiment results show that the complexity reduction of the proposed method over TZ search method and PBS (Pel Block Search) on JMVC (Joint Multiview Video Coding) can be up to 40~75% and 98% respectively while maintaining similar video image quality and generated bit rates.

Keywords

Motion Estimation;Multi-view Video;Multi-view Video Coding;Motion Vector

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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