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Communication Dans Un Congrès Année : 1999

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

Résumé

We study local deformations of time-frequency and timescale 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.
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Dates et versions

hal-01300333 , version 1 (10-04-2016)

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Laurent Daudet, Marcela Morvidone, Bruno Torrésani. Time-frequency and time-scale vector fields for deforming time-frequency and time-scale representations. SPIE Conference on Wavelet Applications in Signal and Image Processing, Jul 1999, San Diego, CA, United States. ⟨10.1117/12.366763⟩. ⟨hal-01300333⟩
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