Additive Distortion Modeling for Unequal Error Protection of Scalable Multimedia Content

Autor:	Claude Desset, Eric Salemi, Peter Schelkens, Jan Cornelis
Přispěvatelé:	Electronics and Informatics
Předmět:	Channel code Theoretical computer science Computer science unequal error protection Data_CODINGANDINFORMATIONTHEORY computer.file_format Communications system Computer engineering Distortion JPEG 2000 Scalability Redundancy (engineering) computer Transform coding Communication channel
Zdroj:	Vrije Universiteit Brussel ICASSP (2)
Popis:	Due to the improvement of compression technology, limited bandwidth channels can convey more data than before. However, since compressed streams are very sensitive to transmission errors, a joint optimization of the source-channel coding is required. Unequal error protection (UEP) is the most pragmatic way to do it, and exploits the embedded nature of bitstreams produced by scalable coders. However, depending on the number of substreams and protection levels, optimization of UEP can be extremely complex. A large simplification comes from considering the contribution to the global distortion of each substream as independent from the others. This paper explores this distortion additivity assumption for JPEG2000, and shows that though the assumption does not fully hold, no visible consequence on UEP performance is introduced, while reducing significantly the complexity of the optimization process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3499678517d068df699bdb6997d4ae0 https://researchportal.vub.be/en/publications/c0028adc-f83a-4895-9306-75278bf0d90e Zobrazit plný text záznamu