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Proceedings Paper

Wavelet-transform-based videoconferencing system with spatio-temporal scalability
Author(s): Patrizio Campisi; Mauro Gentile; Alessandro Neri
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Paper Abstract

In this paper, the design of a video conference system is outlined. The proposed scheme allows the various attendees to access the multipoint video distribution center via channels of different nature and capacity without resorting to parallel bank of coders or multiple decoding-coding conversions. This approach allows to obtain a scalability of the user profile which is not present in DCT based video codecs, where the distribution of the encoded video to different attendees is performed by using a unique bit rate adjusted according to the capacity of the worst connection. In this contribution a video coder based on spatio-temporal multiresolution pyramid generated by a 3D separable Wavelet transform is proposed. Experimental results show the capability of the proposed method.

Paper Details

Date Published: 26 October 1999
PDF: 11 pages
Proc. SPIE 3813, Wavelet Applications in Signal and Image Processing VII, (26 October 1999); doi: 10.1117/12.366842
Show Author Affiliations
Patrizio Campisi, Univ. degli Studi Roma Tre (Italy)
Mauro Gentile, Univ. degli Studi Roma Tre (Italy)
Alessandro Neri, Univ. degli Studi Roma Tre (Italy)

Published in SPIE Proceedings Vol. 3813:
Wavelet Applications in Signal and Image Processing VII
Michael A. Unser; Akram Aldroubi; Andrew F. Laine, Editor(s)

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