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Proceedings Paper

MPEG-like pyramidal video coder
Author(s): Rakeshkumar Gandhi; Limin Wang; Sethuraman Panchanathan; Morris Goldberg
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Paper Abstract

In this paper, we propose an MPEG-like video coder using a 3-dimensional (3D) adaptive pyramid. In the 3D adaptive pyramid, the temporal or spatial contraction is selected using the corresponding prediction differences. A video codec is designed using the 3D adaptive pyramid and intra-frame vector quantization. Encoding errors introduced at the upper levels are fed-forward to the lower levels of the pyramid which makes lossless coding possible. The proposed pyramidal video coder has a number of similarities with the MPEG-I video compression standard. Simulation results for the CCITT standard test sequences indicate that the 3D adaptive pyramid reduces the lossless bit rate by a factor of two. Excellent subjective quality as well as objective quality (PSNR value of 36.6 db) are obtained at a bit rate less than T1 rate (i.e., 1.544 Mb/s). Furthermore, smooth transition is achieved in the case of scene changes without sacrificing picture quality.

Paper Details

Date Published: 22 October 1993
PDF: 12 pages
Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); doi: 10.1117/12.157988
Show Author Affiliations
Rakeshkumar Gandhi, Univ. of Ottawa (Canada)
Limin Wang, Communications Research Ctr. (Canada)
Sethuraman Panchanathan, Univ. of Ottawa (Canada)
Morris Goldberg, Institut Eurecom (France)

Published in SPIE Proceedings Vol. 2094:
Visual Communications and Image Processing '93
Barry G. Haskell; Hsueh-Ming Hang, Editor(s)

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