Time-frequency and time-scale vector fields for deforming time-frequency and time-scale representations

Laurent Daudet; Marcela Morvidone; Bruno Torresani

doi:10.1117/12.366763

26 October 1999 Time-frequency and time-scale vector fields for deforming time-frequency and time-scale representations

Laurent Daudet, Marcela Morvidone, Bruno Torresani

Proceedings Volume 3813, Wavelet Applications in Signal and Image Processing VII; (1999) https://doi.org/10.1117/12.366763
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Laurent Daudet, Marcela Morvidone, and Bruno Torresani "Time-frequency and time-scale vector fields for deforming time-frequency and time-scale representations", Proc. SPIE 3813, Wavelet Applications in Signal and Image Processing VII, (26 October 1999); https://doi.org/10.1117/12.366763

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