Hierarchical transmission of picture signals on a MAN

Benoit M. M. Macq; Patrick Piscaglia; A. Laloux

doi:10.1117/12.160495

29 October 1993 Hierarchical transmission of picture signals on a MAN

Benoit M. M. Macq, Patrick Piscaglia, A. Laloux

Proceedings Volume 1977, Video Communications and PACS for Medical Applications; (1993) https://doi.org/10.1117/12.160495
Event: Video Communications and Fiber Optic Networks, 1993, Berlin, Germany

Abstract

Picture archiving and communication systems (PACS) have to handle a lot of moving or still images services with different resolution levels (HDTV-like, TV-like and lower resolutions), quality requirements (from acceptable visual quality to lossless) and different priorities. In this paper we present a new system for the integration of hierarchical images transmission in a broadband network based on the DQDB protocol (IEEE 802.6 standard). This system is based on the combination of two new tools. First we have designed a multiresolution/multiquality image coding scheme based on wavelet transforms. The main original feature of the algorithm is that it allows a multiresolution lossless access to images. A greater compression ration is possible at the price of graceful degradations. Secondly, we have implemented an improved priority mechanism in the DQDB protocol. The aim was that, in case of network overload, the emissions lose quality but are always maintained. A simulation of the implementation of such a system for the handling of the communications inside a hospital is also presented.

Citation Download Citation

Benoit M. M. Macq, Patrick Piscaglia, and A. Laloux "Hierarchical transmission of picture signals on a MAN", Proc. SPIE 1977, Video Communications and PACS for Medical Applications, (29 October 1993); https://doi.org/10.1117/12.160495

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