Spectrum decomposition for image/signal coding
dc.contributor.author | Lin, Jianyu | |
dc.contributor.author | Smith, M. | |
dc.date.accessioned | 2017-01-30T13:37:37Z | |
dc.date.available | 2017-01-30T13:37:37Z | |
dc.date.created | 2013-03-20T20:00:49Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Lin, 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.uri | http://hdl.handle.net/20.500.11937/33536 | |
dc.identifier.doi | 10.1109/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.publisher | I E E E | |
dc.subject | decomposition of spectrum | |
dc.subject | condensed wavelet packets | |
dc.subject | overlapped block transform | |
dc.subject | sparse transform for coding and compressive sampling/compressed sensing | |
dc.title | Spectrum decomposition for image/signal coding | |
dc.type | Journal Article | |
dcterms.source.volume | 61 | |
dcterms.source.number | 5 | |
dcterms.source.startPage | 1065 | |
dcterms.source.endPage | 1071 | |
dcterms.source.issn | 1053-587X | |
dcterms.source.title | IEEE Transactions on Signal Processing | |
curtin.department | ||
curtin.accessStatus | Fulltext not available |