Journal of the Institute of Electronics Engineers of Korea SP (대한전자공학회논문지SP)

The Institute of Electronics and Information Engineers (대한전자공학회)
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No-reference Measurement of Blocking Artifacts to Assess the Quality of IP Based Video Service

IP 기반 비디오 서비스의 화질 측정을 위한 비참조 블록 열화 측정 방법

  • Lee, Seon-Oh (Dept. of Computer Eng., Kwangwoon University) ;
  • Min, Kyung-Yeon (Dept. of Computer Eng., Kwangwoon University) ;
  • Sim, Dong-Gyu (Dept. of Computer Eng., Kwangwoon University) ;
  • Lee, Hyun-Woo (Electronics and Telecommunications Research Institute) ;
  • Ryu, Won (Electronics and Telecommunications Research Institute) ;
  • Kim, Jin-Sul (Electronics and Telecommunications Research Institute)
  • 이선오 (광운대학교 컴퓨터공학과) ;
  • 민경연 (광운대학교 컴퓨터공학과) ;
  • 심동규 (광운대학교 컴퓨터공학과) ;
  • 이현우 (한국전자통신연구원 방송통신융합연구부문 IPTV 연구부) ;
  • 류원 (한국전자통신연구원 방송통신융합연구부문 IPTV 연구부) ;
  • 김진술 (한국전자통신연구원 방송통신융합연구부문 IPTV 연구부)
  • Published : 2009.11.25
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Abstract

In this paper, we propose a new method of blocky artifacts measurement for IP based video service. In order to assess the quality of IP based video service, we classify degradation into blocking artifacts by network error or by transmission error. in order to assess blocking artifacts based on No-reference, we estimate blocky artifacts from network errors and image compression by calculating amount of difference between target block and neighbor blocks and error concealment algorithm in a video receiver. To ensure accuracy of proposed method, we compare our result to MOS data using SSCQE method. Experimental results show that the proposed algorithm is better than a conventional method by around 1.3.

본 논문은 IP 기반 비디오 서비스의 화질 측정을 위하여 새로운 비참조 기반의 블록 열화 측정 알고리즘을 제안한다. 제안하는 방법은 IP 기반 비디오 서비스의 화질 측정을 위하여, 네트워크에 의한 블록 열화와 영상 압축에 의한 블록 열화를 구분한다. 또한 비참조 기반으로 블록 열화를 검출하기 위하여, 주변 블록과의 차와 비디오 수신 단말기의 오류 수정 알고리즘의 패턴을 이용하고, 열화된 블록의 세기와 분포를 이용하여 화질 저하 원인을 측정한다. 제안한 방법의 정확도를 확인하기 위하여, SSCQE 방법을 이용한 MOS 실험 결과와 제안한 방법을 이용하여 화질 측정한 결과를 비교하였다. 기존 알고리즘에 비하여 블록 열화 측정의 정확도가 1.3배의 성능 향상된 것을 확인할 수 있었다.

Keywords

References

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