Correction of geometric and refractive image distortions in optical coherence tomography applying Fermat�??s principle | Zendy

Volker Westphal | Zendy; Andrew M. Rollins | Zendy; Sunita Radhakrishnan | Zendy; Joseph A. Izatt | Zendy

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Correction of geometric and refractive image distortions in optical coherence tomography applying Fermat�??s principle

Author(s) -

Volker Westphal,

Andrew M. Rollins,

Sunita Radhakrishnan,

Joseph A. Izatt

Publication year - 2002

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.10.000397

Subject(s) - optics , optical coherence tomography , fermat's last theorem , coherence (philosophical gambling strategy) , refraction , refractive index , diffraction , residual , physics , computer science , mathematics , algorithm , discrete mathematics , quantum mechanics

We describe a methodology for quantitative image correction in OCT which includes procedures for correction of nonlinear axial scanning and non-telecentric scan patterns, as well as a novel approach for refraction correction in layered media based on Fermat's principle. The residual spatial error obtained in layered media with a fan-beam hand-held probe was reduced from several hundred micrometers to near the diffraction and coherence-length limits.

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