Directional wavelet transform in the context of complex quadrature Doppler signals

Nizamettin Aydin; Hugh S. Markus

doi:10.1109/97.870680

Directional wavelet transform in the context of complex quadrature Doppler signals

Nizamettin Aydin, Hugh S. Markus

St George's Hospital Medical School

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Most Doppler ultrasound systems employ quadrature demodulation techniques at the detection stage. The information concerning flow direction encoded in the phase relationship between in-phase and quadrature phase channels is not obvious at this stage. A method based on the utilization of complex wavelets and negative scales has been described. It eliminates the intermediate processing stages by mapping directional information in the scale domain.

Original language	English
Pages (from-to)	278-280
Number of pages	3
Journal	IEEE Signal Processing Letters
Volume	7
Issue number	10
DOIs	https://doi.org/10.1109/97.870680
Publication status	Published - Oct 2000
Externally published	Yes

Funding

Manuscript received May 26, 2000. This work was supported by Project Grant PG99064, British Heart Foundation. The associate editor coordinating the review of this manuscript and approving it for publication was Prof. R. Shenoy. The authors are with the Division of Clinical Neuroscience, St. George’s Hospital Medical School, London, SW17 0RE, U.K. (e-mail: [email protected]. Publisher Item Identifier S 1070-9908(00)08358-9.

Funders	Funder number
British Heart Foundation

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10.1109/97.870680

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Directional wavelet transform in the context of complex quadrature Doppler signals

Abstract

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