Title :
Encoding temporal subband video signals
Author :
Lan, H. ; Wong, W.C.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
A hybrid video codec employing temporal subband coding, motion compensated discrete cosine transform (DCT) and vector quantization (VQ) is proposed. The lowest subband with similar characteristics to the original images uses H.261/263-type encoding. On the other hand, the higher subband signals contain temporal changes and edge information. Various encoding methods are explored and subsampling with VQ is found to provide good performance with low bit rate
Keywords :
code standards; discrete cosine transforms; image sampling; motion compensation; telecommunication standards; transform coding; vector quantisation; video codecs; video coding; wavelet transforms; H.261/263-type encoding; edge information; encoding temporal subband video signals; hybrid video codec; low bit rate; motion compensated discrete cosine transform; performance; subband coding; subsampling; vector quantization; Bit rate; Codecs; Computational complexity; Design for disassembly; Discrete cosine transforms; Discrete wavelet transforms; Encoding; Low pass filters; Motion compensation; Video coding;
Conference_Titel :
Wireless Image/Video Communications, 1996., First International Workshop on
Conference_Location :
Loughborough
Print_ISBN :
0-7803-3610-0
DOI :
10.1109/WIVC.1996.624673
