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Comparing an FFT filter for multiple reference optical coherence tomography (MR-OCT) with an Chebychev and an elliptic filter
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Paper Abstract

Portable and low-cost optical coherence tomography (OCT) is increasingly used to improve the accuracy of point-of-care applications. The increasing research efforts to use photonics integrated circuits (PIC) is without doubts the future for highest packaging densities in miniature optical systems. MR-OCT is another technology that is using the advantages of well known CD/DVD-ROM technology to build miniaturized and low-cost OCT systems and may be more readily available before PICs reach their full potential. For MR-OCT it is essential to separate the the multiple signals originating from the multiple reflections of the partial mirror in the reference arm of Michelson interferometer. An image analysis on MR-OCT scans is performed for filter types such as a Chebychev2 and an elliptic filter, but also an FFT filter with Gaussian window is discussed. The SNR is compared on a variety of test signals generated with a mirror in the sample arm at different attenuation levels and the CNR is used to compare the image quality.

Paper Details

Date Published: 28 March 2017
PDF: 1 pages
Proc. SPIE 10055, Optics and Biophotonics in Low-Resource Settings III, 100550X (28 March 2017); doi: 10.1117/12.2253265
Show Author Affiliations
Kai Neuhaus, National Univ. of Ireland, Galway (Ireland)
Sergey Alexandrov, National Univ. of Ireland, Galway (Ireland)
Roshan Dsouza, National Univ. of Ireland, Galway (Ireland)
Sean O'Gorman, National Univ. of Ireland, Galway (Ireland)
Hrebesh M. Subhash, National Univ. of Ireland, Galway (Ireland)
Josh Hogan, Compact Imaging, Inc. (United States)
Carol Wilson, Compact Imaging, Inc. (United States)
Paul McNamara, National Univ. of Ireland, Galway (Ireland)
Compact Imaging, Inc. (United States)
Martin Leahy, National Univ. of Ireland, Galway (Ireland)
Royal College of Surgeons (Ireland)


Published in SPIE Proceedings Vol. 10055:
Optics and Biophotonics in Low-Resource Settings III
David Levitz; Aydogan Ozcan; David Erickson, Editor(s)

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