A general sub-band coding scheme for 140 Mbit/s HDTV

Author

Simon, S. ; De Canne, B. ; Van Bladel, M. ; Fan, F.

Author_Institution

Lab. voor Communicatietech. en Informatietransmissie, Gent Univ., Belgium

fYear

1992

fDate

7-9 Apr 1992

Firstpage

401

Lastpage

404

Abstract

A simple three dimensional sub-band splitting scheme for HDTV is presented. The aim is to compress the interlaced HDTV signal which comes from a bit rate of 880 Mbit/s, down to less than 140 Mbit/s. The scheme uses perfect reconstruction and QMF filter banks to split a sequence of frames in the temporal, horizontal and vertical direction. The temporal high bands contain the motion information. After the filtering, subsampling is used in the spatial as well as in the temporal domain. To the subsampled bands bits are allocated, depending on the activities in those bands. Each band is divided in three different activity zones for which different quantizers are used. The resulting values are VLC coded using arithmetic coding. With this technique, good distribution quality results have been achieved

Keywords

computerised picture processing; encoding; high definition television; 140 Mbit/s; QMF filter banks; VLC coded; activity zones; arithmetic coding; distribution quality; interlaced HDTV signal; motion information; perfect reconstruction; signal compression; sub-band coding; subsampling; three dimensional sub-band splitting;

fLanguage

English

Publisher

iet

Conference_Titel

Image Processing and its Applications, 1992., International Conference on

Conference_Location

Maastricht

Print_ISBN

0-85296-543-5

Type

conf

Filename

146822