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Proceedings Paper

MPEG-2/ECVQ look-ahead hybrid quantization and spatially scalable coding
Author(s): Sadik D. Bayrakeri; Russell M. Mersereau
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Paper Abstract

In this paper, a nonlinear approach to spatially scalable coding is developed. Within the context of the MPEG-2 scalable syntax, various decimation and prediction schemes are discussed for the interlaced and progressive format video processing. A novel spatio-temporal video interpolation technique is presented, which is used as the basic unit in the prediction schemes. In addition to the considerable scalability techniques, a lookahead quantization scheme is introduced for P- and B-type picture coding. The new quantization scheme results in further performance improvement by selective combination of the DCT domain scalar quantization and the spatial domain entropy- constrained vector quantization. The performance of the proposed scalable scheme is compared with that of the simulcast technique and the single layer coding. Remarkable performance improvement over the simulcast coding is achieved. While spatial scalability involves multi-layer coding, the new scalable scheme also achieves comparable or better performance that the single layer coding.

Paper Details

Date Published: 10 January 1997
PDF: 9 pages
Proc. SPIE 3024, Visual Communications and Image Processing '97, (10 January 1997); doi: 10.1117/12.263209
Show Author Affiliations
Sadik D. Bayrakeri, Georgia Institute of Technology (United States)
Russell M. Mersereau, Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 3024:
Visual Communications and Image Processing '97
Jan Biemond; Edward J. Delp, Editor(s)

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