Title :
Components of bit-rate variation in videoconference signals
Author :
Ghanbari, Milad ; Pearson, D.E.
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK
Abstract :
The sources of bit-rate variation in a conditional-replenishment videoconference coder were found experimentally to be due to the interaction between coding method and image content. The isolation of the components of variation and the effect on them of buffering and packetisation are reported.
Keywords :
digital signals; encoding; picture processing; pulse-code modulation; teleconferencing; video signals; DPCM; bit-rate variation; buffering; coding method; conditional-replenishment coder; image content; packetisation; transform coding; videoconference signals;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890198
