A zero-crossing detection method applied to Doppler OCT

We present a numerical method based on the detection of the zero-crossing points in an OCT signal for the measurement of the Doppler frequency in a laminar flow. This method is compared to other processing approaches currently used in Doppler OCT. The results show that in the case of laminar flow th...

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Bibliographic Details
Published in:Optics express 2008-03, Vol.16 (7), p.4394-4412
Main Authors: Xu, Zhiqiang, Carrion, Lionel, Maciejko, Roman
Format: Article
Language:English
Subjects:
Algorithms
Image Enhancement - methods
Image Interpretation, Computer-Assisted - methods
Laser-Doppler Flowmetry - methods
Tomography, Optical Coherence - methods
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Summary:We present a numerical method based on the detection of the zero-crossing points in an OCT signal for the measurement of the Doppler frequency in a laminar flow. This method is compared to other processing approaches currently used in Doppler OCT. The results show that in the case of laminar flow the zero-crossing method gives the most precise results, especially in the higher velocity regime.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.16.004394