The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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An Efficient Motion Vector Coding Algorithm for the Video Sequence with Slow Motion

저속 동영상에 효과적인 움직임 벡터 부호화 알고리듬

  • 문용호 (부산외국어대학교 디지털정보공학부) ;
  • 김영국 (LG전자 DDM 사업부) ;
  • 장정환 (부산외국어대학교 디지털정보공학부) ;
  • 김재호 (부산대학교 일반대학원 전자공학과)
  • Published : 2005.04.01
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Abstract

In this paper, we propose a new efficient motion vector coding algorithm for the video sequence with slow motion. In the proposed algorithm, the amount of motion for a given video sequence is determined by a Skip_rate parameter. The motion difference for slow motion is encoded with a combined codeword which is generated from the conventional codewords. The simulation results show that the proposed algorithm achieves approximately $15\%$ bits gain compared to the conventional methods. Moreover, additional memory and calculations for statistical observation are not required in the proposed algorithm.

본 논문에서는 움직임이 작은 동영상에 효과적인 새로운 움직임 벡터 부호화 알고리듬을 제안한다. 제안 알고리듬에서는 새롭게 정의된 파라메타를 이용하여 동영상의 움직임 정도를 추정한다. 그리고 움직임이 작은 경우에 움직임 벡터차는 기존 부호어들로부터 생성되는 단일 결합 부호어에 의하여 압축된다. 모의 실험 결과는 움직임이 작은 동영상에 대하여 제안 알고리듬이 기존 방식들에 비하여 평균 $15\%$정도의 성능 향상을 보였다. 또한 제안 알고리듬은 새로운 통계치의 계산이나 부가적인 메모리 사용이 요구되지 않는 장점을 지닌다.

Keywords

References

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