Title :
The influence of scene content on bit-rate variations in ATM video
Author :
Robinson, Andrew ; Pearson, Don ; Xiong, Jianping
Author_Institution :
BT Network Services Support, London, UK
Abstract :
The author identifies factors which contribute to a high peak-to-mean ratio in ATM video. This ratio needs to be high if the full benefit of the B-ISDN scheme is to be utilised. If the network is sufficiently and correctly loaded, a high peak-to mean ratio will result in a large statistical multiplexing gain. The motion of the scene, if interframe coding is being used, contributes to the bit-rate variations. Object textures and high-frequency uncorrelated picture material also make a contribution. The variations are dependent on the data compression properties of the coding scheme in operation
Keywords :
B-ISDN; asynchronous transfer mode; data compression; image coding; video signals; ATM video; B-ISDN; bit-rate variations; coding scheme; data compression properties; high-frequency uncorrelated picture material; interframe coding; object texture; peak-to-mean ratio; scene content; statistical multiplexing gain;
Conference_Titel :
Coding for Packet Video and Speech Transmission, IEE Colloquium on
Conference_Location :
London
