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Proceedings Paper

Coding and transmission of subband coded images on the Internet
Author(s): Benjamin W. Wah; Xiao Su
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Paper Abstract

Subband-coded images can be transmitted in the Internet using either the TCP or the UDP protocol. Delivery by TCP gives superior decoding quality but with very long delays when the network is unreliable, whereas delivery by UDP has negligible delays but with degraded quality when packets are lost. Although images are delivered currently over the Internet by TCP, we study in this paper the use of UDP to deliver multi-description reconstruction-based subband-coded images. First, in order to facilitate recovery from UDP packet losses, we propose a joint sender-receiver approach for designing optimized reconstruction-based subband transform (ORB-ST) in multi-description coding (MDC). Second, we carefully evaluate the delay-quality trade-offs between the TCP delivery of SDC images and the UDP and combined TCP/UDP delivery of MDC images. Experimental results show that our proposed ORB-ST performs well in real Internet tests, and UDP and combined TCP/UDP delivery of MDC images provide a range of attractive alternatives to TCP delivery.

Paper Details

Date Published: 26 September 2001
PDF: 10 pages
Proc. SPIE 4551, Image Compression and Encryption Technologies, (26 September 2001); doi: 10.1117/12.442884
Show Author Affiliations
Benjamin W. Wah, Univ. of Illinois/Urbana-Champaign (United States)
Xiao Su, Univ. of Illinois/Urbana-Champaign (United States)


Published in SPIE Proceedings Vol. 4551:
Image Compression and Encryption Technologies

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