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Proceedings Paper

Digital HDTV compression at 44 Mbps using parallel motion-compensated transform coders
Author(s): Hsueh-Ming Hang; Riccardo Leonardi; Barry G. Haskell; Robert L. Schmidt; Hemant Bheda; Joseph H. Othmer
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Paper Abstract

High Definition Television (HDTV) promises to offer wide-screen, much better quality pictures as compared to the today’s television. However, without compression a digital HDTV channel may cost up to one Gbits/sec transmission bandwidth. We suggest a parallel processing structure using the proposed international standard for visual telephony (CCITT Px64 kbs standard) as processing elements, to compress the digital HDTV pictures. The basic idea is to partition an HDTV picture into smaller sub-pictures and then compress each sub-picture using a CCITT Px64kbs coder, which is cost-effective, by today’s technology, only on small size pictures. Since each sub-picture is processed by an independent coder, without coordination these coded sub-pictures may have unequal picture quality. To maintain a uniform quality HDTV picture, the following two issues are studied: (l) sub-channel control strategy (bits allocated to each sub-picture), and (2) quantization and buffer control strategy for individual sub-picture coder. Algorithms to resolve the above problems and their computer simulations are presented.

Paper Details

Date Published: 1 September 1990
PDF: 17 pages
Proc. SPIE 1360, Visual Communications and Image Processing '90: Fifth in a Series, (1 September 1990); doi: 10.1117/12.24191
Show Author Affiliations
Hsueh-Ming Hang, AT&T Bell Labs. (United States)
Riccardo Leonardi, AT&T Bell Labs. (United States)
Barry G. Haskell, AT&T Bell Labs. (United States)
Robert L. Schmidt, AT&T Bell Labs. (United States)
Hemant Bheda, AT&T Bell Labs. (United States)
Joseph H. Othmer, AT&T Bell Labs. (United States)

Published in SPIE Proceedings Vol. 1360:
Visual Communications and Image Processing '90: Fifth in a Series
Murat Kunt, Editor(s)

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