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Proceedings Paper

Use of UDP for efficient imagery dissemination
Author(s): Robert Prandolini; T. Andrew Au; Andrew K. Lui; Michael J. Owen; Mark W. Grigg
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Paper Abstract

In the defence organization, imagery represents an important information source for users in the tactical, operational and strategic environments. Its wider dissemination may rely on deployed communication networks that are often unstable with high bit error rates and outages. This paper presents efficient techniques for imagery dissemination using the user datagram protocol (UDP). The use of UDP is compared with the popular transmission control protocol and shown to be superior in performance for error prone IP networks. We have employed a wavelet based coder producing an embedded bit-stream. The packetization of the bit-stream is investigated and we show that it is better to tile an image into independent embedded bit-streams when the network performance is poor. Variable-size tiling is compared with, and shown to be superior to, a fixed-size tiling approach. Selective re-transmission of lost packets is implemented for efficient imagery dissemination using UDP. The selective re- transmission scheme is a function of network bandwidth, delay times, error rates and the significance of the packet.

Paper Details

Date Published: 30 May 2000
PDF: 11 pages
Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); doi: 10.1117/12.386649
Show Author Affiliations
Robert Prandolini, Defence Science and Technology Organisation (Australia)
T. Andrew Au, Defence Science and Technology Organisation (Australia)
Andrew K. Lui, Defence Science and Technology Organisation (Australia)
Michael J. Owen, Defence Science and Technology Organisation (Australia)
Mark W. Grigg, Defence Science and Technology Organisation (Australia)


Published in SPIE Proceedings Vol. 4067:
Visual Communications and Image Processing 2000
King N. Ngan; Thomas Sikora; Ming-Ting Sun, Editor(s)

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