서지주요정보
MPEG-1 VBR 비디오 트래픽에 대한 shift-level process 모델의 적합성 검증 = A verification of shift-level process model for MPEG-1 VBR video traffic
서명 / 저자 MPEG-1 VBR 비디오 트래픽에 대한 shift-level process 모델의 적합성 검증 = A verification of shift-level process model for MPEG-1 VBR video traffic / 정세영.
저자명 정세영 ; Jeong, Sae-Young
발행사항 [대전 : 한국과학기술원, 2000].
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등록번호

8010514

소장위치/청구기호

학술문화관(문화관) 보존서고

MEE 00084

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초록정보

It has been reported that variable bit rate (VBR) video traffic exhibits long-range dependence(LRD). Various processes have been proposed for modeling traffic with LRD and analyzing its effects on network performance. However, in the previous models it was not possible to identify the effects of short range and long-range correlation. But recently, some reserchers presented a video traffic model based on the shift-level process. They observed that the auto-correlation function(ACF) of an empirical video trace is accurately captured by the shift-level process with combined function :an exponential function in short range and a hyperbolic function in long range. Especially, they present an accurate parameter matching algorithm for JPEG- coded video traffic. In this paper, we present a verification of shift-level process modeling for MPEG VBR video traffics. By the shift-level process modeling, the probability distribution of scene lengths in video traffic can be obtained explicitly from ACF of video traffic. For the ACF, the matching parameter are obtained for the approximation of ACF by the combined model of exponential and hyperbolic functions. The approximated ACF of video traffic and the obtained probability of scene lengths are compared with measured ACF and probability distribution for several video traces. And also we present scene change detection algorithm and the methods of getting p.d.fs of data size and of scene lengths. By the simulation results, it is shown that the ACF of the shift-level process modeling is very much dependent on the characteristics of video trace for MPEG-coded video traffic.

서지기타정보

서지기타정보
청구기호 {MEE 00084
형태사항 iv, 49 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Sae-Young Jeong
지도교수의 한글표기 : 김재균
지도교수의 영문표기 : Jae-Kyoon Kim
학위논문 학위논문(석사) - 한국과학기술원 : 전기및전자공학전공,
서지주기 참고문헌 : p. 48-49
주제 장면 길이
장면 데이터 크기
자기 상관 함수
장면 전환 검출
장구간 상관성
Shift-level process
MPEG
VBR
Auto-correlation function
Long-Range dependence
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