Title :
Multilayer subband-based video coding
Author_Institution :
Bell Commun. Res., Red Bank, NJ, USA
fDate :
9/1/1991 12:00:00 AM
Abstract :
A motion compensated interframe subband coding algorithm suitable for a wide range of video coding applications is described. In this approach the spectrum of each frame of video signal is first decomposed into smaller frequency bands where each can then be coded accordingly. For the best performance a combination of hybrid DCT/DPCM (discrete cosine transform/differential pulse code modulation), interframe DPCM, and intraframe PCM was considered. To preserve its hierarchical structure each band is coded independently of higher frequency bands but can share information with the lower bands. A simulation was carried out for HDTV sequences
Keywords :
computerised picture processing; encoding; high definition television; pulse-code modulation; transforms; video signals; HDTV sequences; discrete cosine transform/differential pulse code modulation; hybrid DCT/DPCM; interframe DPCM; intraframe PCM; motion compensated interframe subband coding algorithm; multilayer subband-based video coding; Codecs; Costs; Fourier transforms; Frequency estimation; HDTV; Nonhomogeneous media; Spatial resolution; TV; Video coding; Videoconference;
Journal_Title :
Communications, IEEE Transactions on