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An Unwrapping of Signals in Transform Domain and Its Application in Signal Reconstruction
Pavol ZAVARSKY Nobuo FUJII Noriyoshi KAMBAYASHI Masahiro IWAHASHI Somchart CHOKCHAITAM
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/07/01
Print ISSN: 0916-8508
Type of Manuscript: PAPER
image compression, signal reconstruction, perfect reconstruction filter bank,
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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.