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Optical Signal Processing in Spectral Domain OCT using Smoothed Pseudo Wigner-Ville Distribution
Journal
Progress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN
16057422
Date Issued
2024-01-01
Author(s)
Abstract
This work reports the application of smoothed pseudo Wigner-Ville distribution for optical signal processing in spectral domain optical coherence tomography. Although traditional Fourier Transform methods have been successful in generating Axial scans, they are limited in fully exploiting the resolution of data captured by N-pixel detectors due to the complex conjugate symmetry property, resulting in redundant information over N/2 number of the pixels. To overcome this limitation, our proposed approach leverages smoothed pseudo Wigner-Ville distribution for precise frequency analysis across N samples and incorporates Kaiser windows to achieve effective frequency smoothing. This technique enables the generation of Axial scans over N pixels instead of N/2 pixels. Experimental verification validates the efficacy of the proposed technique, demonstrating a twofold improvement in longitudinal spatial resolution compared to the conventional Fourier based method.
Volume
12830
Subjects