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dc.contributor.authorLin, Jianyu
dc.contributor.authorSmith, M.
dc.date.accessioned2017-01-30T13:37:37Z
dc.date.available2017-01-30T13:37:37Z
dc.date.created2013-03-20T20:00:49Z
dc.date.issued2013
dc.identifier.citationLin, Jianyu and Smith, Mark T.J. 2013. Spectrum decomposition for image/signal coding. IEEE Transactions on Signal Processing. 61 (5): pp. 1065-1071.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/33536
dc.identifier.doi10.1109/TSP.2012.2231680
dc.description.abstract

In conventional subband/wavelet image coding, the subband decomposition is performed on the spatial-domain image. Here, we introduce a novel decomposition where the subband decomposition is performed on the global DCT spectrum of the image. That is, the two-dimensional spectrum rather than the image is represented by a sum of basis functions, each weighted by the transform coefficients. The distinct features of this decomposition are analyzed from a transform perspective. This spectral subband decomposition is then used as the basis for a new image coder, building on the condensed wavelet packet (CWP) algorithm. Ironically, this new method is shown to have lower arithmetic complexity than conventional subband/wavelet coders that directly decompose a time or spatial domain signal. Comparisons of the new method against conventional subband/wavelet coders that use the popular 9/7 dyadic decomposition, condensed wavelet packets, and generalized lapped orthogonal transforms, show that the new method has lower complexity and higher compression performance.

dc.publisherI E E E
dc.subjectdecomposition of spectrum
dc.subjectcondensed wavelet packets
dc.subjectoverlapped block transform
dc.subjectsparse transform for coding and compressive sampling/compressed sensing
dc.titleSpectrum decomposition for image/signal coding
dc.typeJournal Article
dcterms.source.volume61
dcterms.source.number5
dcterms.source.startPage1065
dcterms.source.endPage1071
dcterms.source.issn1053-587X
dcterms.source.titleIEEE Transactions on Signal Processing
curtin.department
curtin.accessStatusFulltext not available


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