Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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Efficient Motion Compensated Interpolation Technique Using Image Resizing

영상의 크기 변환을 이용한 효율적인 움직임 보상 보간 기법

  • Kwon, Hye-Gyung (Information, Communications and Electronics Engineering, The Catholic University of Korea) ;
  • Lee, Chang-Woo (Information, Communications and Electronics Engineering, The Catholic University of Korea)
  • 권혜경 (가톨릭대학교 정보통신전자공학부) ;
  • 이창우 (가톨릭대학교 정보통신전자공학부)
  • Received : 2013.03.07
  • Accepted : 2013.06.14
  • Published : 2013.07.30
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Abstract

Motion compensated interpolation (MCI) techniques are used for increasing the frame rate and generating the side information in the distributed video coding (DVC) system. In this paper, an efficient MCI technique using the image resizing in the DCT or LiftLT domain is proposed, and the performance of the MCI technique using various sub-pixel generation techniques is analyzed. Extensive computer simulations show that the proposed method produces the superior results compared to the conventional methods.

움직임 보상 보간 기법은 동영상 정보의 프레임율 증가 뿐 아니라 분산 동영상 부호화 시스템에서 부가 정보 생성에 사용된다. 본 논문에서는 움직임 보상 보간 기법의 성능을 효율적으로 향상시키기 위하여 DCT(Discrete Cosine Transform) 혹은 LiftLT를 이용하여 영상의 크기를 두 배 확대 변환한 후 움직임 보상 보간을 수행하여 생성된 두 배 크기의 영상을 다시 축소 변환하여 원래 크기의 보간 프레임을 생성하는 기법을 제안한다. 또한 보간 필터를 사용하여 부화소 단위의 세밀한 움직임 보상 보간을 수행한 경우의 성능도 분석한다. 모의 실험 결과 제안하는 기법이 기존의 보간 필터를 이용한 기법에 비해서 우수한 성능을 보임을 확인하였다.

Keywords

References

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