Title :
Optimisation of two-layer SNR scalability for MPEG-2 video
Author :
Wilson, D. ; Ghanbari, M.
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK
Abstract :
SNR scalability, used in two-layer video coding, guarantees good base quality pictures at the expense of increased overall bit-rate. By understanding the inherent inefficiencies of enhancement layer coding we have developed an optimisation method called optimal coefficient adjustment in order to reduce overall bit-rates to levels consistent with single-layer operation
Keywords :
discrete cosine transforms; image sequences; optimisation; rate distortion theory; transform coding; video coding; DCT coefficients; MPEG-2 video; SNR scalability; base quality pictures; enhancement layer coding; optimal coefficient adjustment; optimisation; overall bit-rate reduction; two-layer video coding; Bit rate; Broadcasting; Decoding; Discrete cosine transforms; Optimization methods; Quantization; Rate-distortion; Scalability; Systems engineering and theory; Video coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.595330
