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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 15 — Aug. 1, 2012
  • pp: 3075–3077

Optics InfoBase > Optics Letters > Volume 37 > Issue 15 > Page 3075

Compressed sensing with linear-in-wavenumber sampling in spectral-domain optical coherence tomography

Ning Zhang, Tiancheng Huo, Chengming Wang, Tianyuan Chen, Jing-gao Zheng, and Ping Xue  »View Author Affiliations


Optics Letters, Vol. 37, Issue 15, pp. 3075-3077 (2012)
http://dx.doi.org/10.1364/OL.37.003075


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Abstract

We propose a novel method called compressed sensing with linear-in-wavenumber sampling (k-linear CS) to retrieve an image for spectral-domain optical coherence tomography (SD-OCT). An array of points that is evenly spaced in wavenumber domain is sampled from an original interferogram by a preset k-linear mask. Then the compressed sensing based on l1 norm minimization is applied on these points to reconstruct an A-scan data. To get an OCT image, this method uses less than 20% of the total data as required in the typical process and gets rid of the spectral calibration with numerical interpolation in traditional CS-OCT. Therefore k-linear CS is favorable for high speed imaging. It is demonstrated that the k-linear CS has the same axial resolution performance with ∼30  dB higher signal-to-noise ratio (SNR) as compared with the numerical interpolation. Imaging of bio-tissue by SD-OCT with k-linear CS is also demonstrated.

© 2012 Optical Society of America

OCIS Codes
(100.2980) Image processing : Image enhancement
(100.3010) Image processing : Image reconstruction techniques
(110.4500) Imaging systems : Optical coherence tomography
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Imaging Systems

History
Original Manuscript: April 30, 2012
Revised Manuscript: June 5, 2012
Manuscript Accepted: June 13, 2012
Published: July 18, 2012

Virtual Issues
Vol. 7, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Ning Zhang, Tiancheng Huo, Chengming Wang, Tianyuan Chen, Jing-gao Zheng, and Ping Xue, "Compressed sensing with linear-in-wavenumber sampling in spectral-domain optical coherence tomography," Opt. Lett. 37, 3075-3077 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-15-3075

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