Title :
A high quality digital HDTV codec
Author :
Netravali, Arun ; Petajan, Eric ; Knauer, Scott ; Matthews, Kim ; Safranek, Robert J. ; Westerink, Peter
Author_Institution :
AT&T Bell Lab., Murray Hill, NJ, USA
fDate :
8/1/1991 12:00:00 AM
Abstract :
A digital video codec has been developed for the Zenith/AT&T HDTV (high-definition TV) system for terrestrial broadcast over NTSC taboo channels. The codec works on an image progressively scanned with 1575 scan lines every 1/30th of a second and achieves a compression ratio of approximately 50 to 1. The transparent image quality is achieved using motion-compensated transform coding coupled with a perceptual criterion to determine the quantization accuracy required for each transform coefficient. The combination of a sophisticated encoded video format and advanced bit error protection techniques results in a highly robust reception and decoding of the compressed video signal
Keywords :
codecs; encoding; high definition television; picture processing; Zenith/AT&T HDTV; advanced bit error protection techniques; high quality digital HDTV codec; motion-compensated transform coding; perceptual criterion; terrestrial broadcast; Digital video broadcasting; HDTV; Image coding; Image quality; Protection; Quantization; TV broadcasting; Transform coding; Video codecs; Video compression;
Journal_Title :
Consumer Electronics, IEEE Transactions on
