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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Real-time Overlay Video Multicast System

실시간 동영상 오버레이 멀티캐스트 시스템

  • 강호종 (전자부품연구원 디지털미디어센터) ;
  • 송황준 (포항공과대학교 컴퓨터공학과 멀티미디어 통신시스템 연구실) ;
  • 민경원 (전자부품연구원 디지털미디어센터)
  • Published : 2006.02.01
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Abstract

This paper presents an overlay video multicast system over the Internet. The proposed system consists of two parts, i.e. overlay multicast tree suitable for the real-time video delivery and H.263+ rate control adaptive to overlay multicast tree. Overlay multicast tree is constructed to minimize the average time delay of members, and H.263+ rate control pursues a tradeoff between spatial and temporal qualities to enhance the human visual perceptual quality. Two systems are integrated and tested over the real Internet. And experimental results are provided to show the performance of the proposed system.

본 논문에서는 인터넷을 통한 동영상 오버레이 멀티캐스트 시스템을 제안한다. 제안한 시스템은 실시간 동영상 전송에 적합한 오버레이 멀티캐스트 트리 구성 알고리즘과 H.263+ 부호화율 제어 알고리즘을 고려한다. 오버레이 멀티캐스트 트리는 멀티캐스트 구성원들 간의 평균 시간 지연을 최소화하도록 구성하고, H.263+ 부호화율 제어 알고리즘은 시각적 성능을 향상시키기 위해 공간적, 시각적 품질을 동시에 제어한다. 두 가지 알고리즘은 유기적으로 결합하여 실제 인터넷상에서 효과적인 동영상 오버레이 멀티캐스트 시스템을 구성한다.

Keywords

References

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