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Proceedings Paper

Time-frequency and time-scale vector fields for deforming time-frequency and time-scale representations
Author(s): Laurent Daudet; Marcela Morvidone; Bruno Torresani
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Paper Abstract

We study local deformations of time-frequency and time-scale representations, in the framework of the so-called reassignment methods, which aim at `deblurring' time- frequency representations. We focus on deformations generated by appropriate vector fields defined on time- frequency or time scale plane, and constructed on the basis of geometric and group-theoretical arguments. Such vector fields may be used as such for signal analysis (as quantities generalizing instantaneous frequency or group delay) in the framework of reassignment algorithms.

Paper Details

Date Published: 26 October 1999
PDF: 14 pages
Proc. SPIE 3813, Wavelet Applications in Signal and Image Processing VII, (26 October 1999); doi: 10.1117/12.366763
Show Author Affiliations
Laurent Daudet, Univ. de Provence (France)
Marcela Morvidone, Univ. de Provence (France)
Bruno Torresani, Univ. de Provence (France)

Published in SPIE Proceedings Vol. 3813:
Wavelet Applications in Signal and Image Processing VII
Michael A. Unser; Akram Aldroubi; Andrew F. Laine, Editor(s)

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