Title :
Modeling of the coding gain of joint coding for multi-program video transmission
Author :
Vincent, A. ; Corriveau, P. ; Blanchfield, P. ; Renaud, R.
Author_Institution :
Commun. Res. Centre, Ottawa, Ont., Canada
Abstract :
In digital multi-program video transmission, several video programs are compressed (e.g. using MPEG-2), multiplexed, and transmitted over a constant bit rate (CBR) channel. Joint coding (or statistical multiplexing) dynamically distributes the channel capacity among programs according to picture content. This scheme is much more efficient than independent coding where each channel is allocated a fixed bit rate. The authors present a novel model to calculate the coding gain of joint coding relative to independent coding, in terms of bandwidth savings. The model takes into account statistical variations of video program complexity, and subjective picture quality
Keywords :
channel allocation; data compression; multimedia systems; multiplexing; multiplexing equipment; video coding; MPEG-2; bandwidth savings; channel capacity; coding gain; constant bit rate channel; digital multi-program video transmission; fixed bit rate; independent coding; joint coding; picture content; statistical multiplexing; statistical variations; subjective picture quality; video program complexity; video program compression; Bandwidth; Bit rate; Channel capacity; Cyclic redundancy check; Quality of service; Quantization; Statistics; Transform coding; Video coding; Video compression;
Conference_Titel :
Multimedia and Expo, 2000. ICME 2000. 2000 IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
0-7803-6536-4
DOI :
10.1109/ICME.2000.871007
