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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Temporally adaptive layered image sequence coding technique employing H.261 for ATM networks

ATM 전송망에서 H.261을 이용한 시간 적응 계측 부호화 기법

  • 김용관 (호서대학교 정보통신공학부) ;
  • 김인철 (한성대학교 정보전산학부) ;
  • 이상욱 (서울대학교 전기공학부 신호처리 연구실)
  • Published : 1997.07.01
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Abstract

In this paper, a temporally adaptive layered image sequence coding technique employing H.261 is proposed. In the proposed technique, the frame rate of the base layer is adjusted according to the temporal activity measure based on the rate-distortion function. The base layer is encoded using the H.261. Then, the full frame-rate error image is formed by comparing the original image and the interpolated version of the reconstructed base layer image. The enhancement layer is algo encoded using H.261 but with leaky prdiction to provide robust error resilience. The simulation results show that the proposed technique provides better performance than the twin-H.261 with leaky prediction in both the fixed-rate and variable-rate systems.

Keywords

References

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