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Managing QoS of Video Transcoding Server System

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주제분류컴퓨터학

초록

Due to wide spread of smart devices, adopting video contents service to the diverse clients’ device requirements is essential process. Accordingly, transcoding which is a lossy process is required and degrading video quality is inevitable. In such circumstances, minimizing perceptible quality loss is a key issue, while minimizing service cost is key issue of the video contents service provider. However, transcoding cost and video service assessment are both difficult to measure before its actual services. We propose performance estimation criteria and video service quality controls scheme, by categorizing video contents. The preliminary results show that it is possible to relieve transcoding cost from the server side, while maintaining video service quality.

Abstract

Due to wide spread of smart devices, adopting video contents service to the diverse clients’ device requirements is essential process. Accordingly, transcoding which is a lossy process is required and degrading video quality is inevitable. In such circumstances, minimizing perceptible quality loss is a key issue, while minimizing service cost is key issue of the video contents service provider. However, transcoding cost and video service assessment are both difficult to measure before its actual services. We propose performance estimation criteria and video service quality controls scheme, by categorizing video contents. The preliminary results show that it is possible to relieve transcoding cost from the server side, while maintaining video service quality.

참고문헌 (9)

  1. N. Montard, "Objective quality monitoring issues in digital broadcasting networks", IEEE Trans. Broadcasting, 51(3), pp.269~275 (2005)
  2. Rosario Fechali, "Video Quality Metric for Bit Rate Control via Joint Adjustment of Quantization and Frame Rate", IEEE Transaction on Broadcasting, 53(1), pp.441~446 (2007)
  3. G.-M. Muntean, "Subjective assessment of the quality-oriented adaptive scheme", IEEE Trans. Broadcasting, 51(3), pp.275~286 (2005)
  4. S. Kwon, "Joint bandwidth allocation for user-required picture quality ratio among multiple video sources", IEEE Trans. Broadcasting, 51(3), pp.287~295 (2005)
  5. ITU-R, "Methodology for the subjective assessment of the quality of television picture", ITU-R Recommendation BT.500, ~ (2012)
  6. Z. Wang, "Image quality assessment: From error visibility to structural similarity", IEEE Transactions on Image Processing, 13(4), pp.600~612 (2004)
  7. "Video Quality Measurement for High Definition Video Signals, white paper swissqual" (2011)[URL]
  8. 김만종, "H.264", SVC 비디오 재생기에서 사용자 인지 품질 고려한 CPU 전력 감소 기법, 2011, pp.7(3), 13~19[DOI]
  9. 조대현, "클러스터 비디오 서버에서 버퍼 공유를 최대화하는 동적 요청 분산 기법", 한국차세대컴퓨팅학회 논문지, 8(2), pp.47~61 (2012), 한국차세대컴퓨팅학회

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