Wavelet-transform-based videoconferencing system with spatio-temporal scalability

Patrizio Campisi; Mauro Gentile; Alessandro Neri

doi:10.1117/12.366842

26 October 1999 Wavelet-transform-based videoconferencing system with spatio-temporal scalability

Patrizio Campisi, Mauro Gentile, Alessandro Neri

Proceedings Volume 3813, Wavelet Applications in Signal and Image Processing VII; (1999) https://doi.org/10.1117/12.366842
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Patrizio Campisi, Mauro Gentile, and Alessandro Neri "Wavelet-transform-based videoconferencing system with spatio-temporal scalability", Proc. SPIE 3813, Wavelet Applications in Signal and Image Processing VII, (26 October 1999); https://doi.org/10.1117/12.366842

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