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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 6 — May. 25, 2012

Homotopic, non-local sparse reconstruction of optical coherence tomography imagery

Chenyi Liu, Alexander Wong, Kostadinka Bizheva, Paul Fieguth, and Hongxia Bie  »View Author Affiliations


Optics Express, Vol. 20, Issue 9, pp. 10200-10211 (2012)
http://dx.doi.org/10.1364/OE.20.010200


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Abstract

The resolution in optical coherence tomography imaging is an important parameter which determines the size of the smallest features that can be visualized. Sparse sampling approaches have shown considerable promise in producing high resolution OCT images with fewer camera pixels, reducing both the cost and the complexity of an imaging system. In this paper, we propose a non-local approach to the reconstruction of high resolution OCT images from sparsely sampled measurements. An iterative strategy is introduced for minimizing a homotopic, non-local regularized functional in the spatial domain, subject to data fidelity constraints in the k-space domain. The novel algorithm was tested on human retinal, corneal, and limbus images, acquired in-vivo, demonstrating the effectiveness of the proposed approach in generating high resolution reconstructions from a limited number of camera pixels.

© 2012 OSA

OCIS Codes
(100.0100) Image processing : Image processing
(100.3010) Image processing : Image reconstruction techniques
(110.4500) Imaging systems : Optical coherence tomography
(170.4470) Medical optics and biotechnology : Ophthalmology

ToC Category:
Image Processing

History
Original Manuscript: March 1, 2012
Revised Manuscript: April 5, 2012
Manuscript Accepted: April 11, 2012
Published: April 19, 2012

Virtual Issues
Vol. 7, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Chenyi Liu, Alexander Wong, Kostadinka Bizheva, Paul Fieguth, and Hongxia Bie, "Homotopic, non-local sparse reconstruction of optical coherence tomography imagery," Opt. Express 20, 10200-10211 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-20-9-10200


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