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Local directional denoising

Olhede, SC; Walden, AT; (2005) Local directional denoising. IEEE T SIGNAL PROCES , 53 (12) 4725 - 4730.

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Abstract

Denoising of complex-valued signals involves the relationships between the real and imaginary parts of the signal. The authors introduce the idea of local directional thresholding, well-suited to signals that are bidirectional overall but unidirectional at any one time, such as Doppler ultrasound, and show its efficacy on synthetic and real data.

Type: Article
Title: Local directional denoising
Keywords: complex-valued signal, denoising, Hilbert transform, ultrasound, wavelet transform, MULTIPLE MORSE WAVELETS, ANALYTIC SIGNAL, SHRINKAGE, TRANSFORM
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Statistical Science
URI: http://discovery.ucl.ac.uk/id/eprint/54463
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