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Evaluation of Soft Information based JPEG2000 Decoders
Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT.ORCID iD: 0000-0001-7311-9334
2004 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Error free transmission is not always possible in todays nor future's communication networks without making retransmissions. Retransmissions, however, introduce delay. To delay sensitive applications the concept of soft information, i.e. lower layer knowledge about the channel conditions, could reduce the number of retransmissions. This paper explores the utilization of soft information in image decoding. It is not sufficient to treat the soft information and the image decoder separately. By combining soft information and error resilience in the decoder the image quality can be improved. Two modified JPEG2000 image decoders that utilize soft information have been developed. Experiment results with images transmitted over a simulated wireless channel show that a simple decoding process which utilizes soft information can give high gains in image quality. Only marginally higher gains are observed with a more complex decoding process

Place, publisher, year, edition, pages
2004.
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kau:diva-19063OAI: oai:DiVA.org:kau-19063DiVA, id: diva2:592705
Conference
The Second Swedish National Computer Networking Workshop (SNCNW). Karlstad. Sweden. November 2004
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2018-06-04

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Persson, HannesBrunström, Anna

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CiteExportLink to record
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  • apa
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Output format
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  • asciidoc
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