Title :
Scene oriented model for VBR video
Author :
Casilari, E. ; Lorente, M. ; Reyes, A. ; Estrella, A. Díaz ; Sandoval, F.
Author_Institution :
Dept. Tecnologia Electron., ETSI Telecomunicacion Univ. de Malaga, Spain
fDate :
1/22/1998 12:00:00 AM
Abstract :
A new model for variable bit rate (VBR) video traffic is presented. The model, which could be used as a traffic generator, considers two time scales: scenes, for periods of several minutes, and groups of pictures (GOP), for periods of half a second. To model the scene changes, a Markov chain is used. For the GOP level. A modification for the projected autoregressive (PAR) model is proposed so that the fitting of the autocorrelation function is improved. The model is used to imitate two real MPEG video signals, showing that it is able to accurately capture the behaviour of the real traffic in a queue
Keywords :
Markov processes; autoregressive processes; correlation theory; telecommunication traffic; video coding; MPEG video signals; Markov chain; autocorrelation function; groups of pictures; projected autoregressive model; scene change modelling; scene oriented model; traffic generator; variable bit rate video traffic;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980121
