5 March 2018 Increasing signal-to-noise ratio of swept-source optical coherence tomography by oversampling in k-space
Author Affiliations +
Proceedings Volume 10591, 2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources; 105910R (2018) https://doi.org/10.1117/12.2283015
Event: Second Canterbury Conference on Optical Coherence Tomography, 2017, Canterbury, United Kingdom
Abstract
Optical coherence tomography systems suffer from noise that could reduce ability to interpret reconstructed images correctly. We describe a method to increase the signal-to-noise ratio of swept-source optical coherence tomography (SSOCT) using oversampling in k-space. Due to this oversampling, information redundancy would be introduced in the measured interferogram that could be used to reduce white noise in the reconstructed A-scan. We applied our novel scaled nonuniform discrete Fourier transform to oversampled SS-OCT interferograms to reconstruct images of a salamander egg. The peak-signal-to-noise (PSNR) between the reconstructed images using interferograms sampled at 250MS/s andz50MS/s demonstrate that this oversampling increased the signal-to-noise ratio by 25.22 dB.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Karim Nagib, Karim Nagib, Biniyam Mezgebo, Biniyam Mezgebo, Rahul Thakur, Rahul Thakur, Namal Fernando, Namal Fernando, Behzad Kordi, Behzad Kordi, Sherif Sherif, Sherif Sherif, } "Increasing signal-to-noise ratio of swept-source optical coherence tomography by oversampling in k-space", Proc. SPIE 10591, 2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources, 105910R (5 March 2018); doi: 10.1117/12.2283015; https://doi.org/10.1117/12.2283015
PROCEEDINGS
4 PAGES


SHARE
Back to Top