Correction of geometric and refractive image distortions in optical coherence tomography applying Fermat's principle.
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.
Volker
V
Westphal
Andrew
A
Rollins
Sunita
S
Radhakrishnan
Joseph
J
Izatt