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US 10,327,631 B2Granted
Post-processing reduction of fixed pattern artifacts and trigger jitter in swept-source optical coherence tomography
AssigneeOregon Health & Science University
InventorsDavid Huang, Gangjun Liu
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Abstract
Disclosed herein are methods and systems for aligning swept-source optical coherence tomography (SS-OCT) spectral interferograms to a reference spectral interferogram based on signal information (e.g., amplitude or phase) at a fixed-pattern noise location to reduce residual fixed-pattern noise and improve the phase stability of SS-OCT systems.
Claims21
A computer-implemented method of aligning swept-source optical coherence tomography (SS-OCT) spectral interferograms, comprising:
- calculating a relative wavenumber shift between an SS-OCT interferogram and a reference SS-OCT interferogram based on signal information of the SS-OCT interferogram and the reference SS-OCT interferogram at a fixed-pattern noise location, wherein the reference SS-OCT interferogram and the SS-OCT interferogram are obtained with a same interferometer;
- aligning the SS-OCT interferogram to the reference SS-OCT interferogram based on the calculated relative wavenumber shift;
- and
- generating an OCT image based on the aligned SS-OCT interferograms and outputting the generated OCT image to a display device.
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Dependencies are inferred from the claim text.