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Large-volume optical coherence tomography with real-time correction of geometric distortion artifacts
Authors
Adrian Bradu
J.A.N. Buytaert
+3 more
J.J.J. Dirckx
S.V.D. Jeught
Adrian G.H. Podoleanu
Publication date
1 January 2013
Publisher
Nova Science Publishers, Inc.
Abstract
Large-volume optical coherence tomography (OCT)-setups employ scanning mirrors and suffer from non-linear geometric distortion artifacts in which the degree of distortion is determined by the maximum angles over which the mirrors rotate. In this chapter, we describe a straightforward approach to correct for these distortion artifacts, creating an alternative to previously reported ray-tracing schemes that are unable to apply these corrections in real-time. By implementing the proposed 3D recalibration algorithm on the graphics card of a standard computer, this feature can be applied in real-time. We validate the accuracy of the technique using OCT measurements of a highly curved object within a large imaging volume of 12.35 x 10.13 x 2.36 mm3. The resulting 3D object shape measurements are compared against high-resolution and aberration-free optical profilometry measurements. Maintaining an optical resolution of <10μm within the sample, both axially and transversally, we realized a real-time, high-resolution, largevolume OCT imaging system, capable of producing distortion corrected wide-field OCT data with a geometric surface shape accuracy of <15μm. © 2013 Nova Science Publishers, Inc. All rights reserved
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Institutional Repository Universiteit Antwerpen
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c:irua:107778
Last time updated on 25/02/2019
Kent Academic Repository
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oai:kar.kent.ac.uk:49319
Last time updated on 05/04/2016