An Unwrapping of Signals in Transform Domain and Its Application in Signal Reconstruction

Pavol ZAVARSKY  Nobuo FUJII  Noriyoshi KAMBAYASHI  Masahiro IWAHASHI  Somchart CHOKCHAITAM  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E84-A   No.7   pp.1765-1771
Publication Date: 2001/07/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Image
Keyword: 
image compression,  signal reconstruction,  perfect reconstruction filter bank,  

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Summary: 
An unwrapping of signal coefficients in transform domain is proposed for applications in which a lossy operation is performed on the coefficients between analysis and synthesis. It is shown that the unwrapping-based modification of signal-to-additive-signal ratio can employ the fact that an implementation of a biorthogonal decomposition is characterized by a mutually orthogonal eigenvectors. An example to illustrate the benefits of the presented approach in lossy image compression applications is shown.