FPGA implementation of spectral fusing Gabor domain optical coherence microscopy

Panomsak Meemon; Yutana Lenaphet; Jadsada Saetiew

doi:10.1117/12.2544356

17 February 2020 FPGA implementation of spectral fusing Gabor domain optical coherence microscopy

Panomsak Meemon, Yutana Lenaphet, Jadsada Saetiew

Proceedings Volume 11245, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXVII; 1124517 (2020) https://doi.org/10.1117/12.2544356
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

Gabor domain optical coherence microscopy (GD-OCM) is an emerging tomographic imaging technique that overcome the depth of focus (DOF) limit of high numerical objective lens by acquiring multiple cross-section images corresponded with different focal planes of the objective along an axial direction and combining them to form an invariant high resolution cross-section image. We previously reported an alternative processing method of GD-OCM called spectral fusing GD-OCM (SF-GD-OCM). SF-GD-OCM extracts in-focus information directly from acquired spectral interference signals. The advantage of SF-GD-OCM over the original GD-OCM is that the Gabor filtering and fusing can be implemented in an acquisition hardware instead of a host computer. Here, we have investigated the implementation of SF-GD-OCM by using FPGA frame grabber. The experimental setup of the acquisition system as well as the implementation of the spectral Gabor fusion in FPGA device have been developed and verified. Results show that the data processing of SF-GD-OCM in FPGA enabled acquisition device is possible and could lead to improvement in overall imaging speed of GD-OCM.

Citation Download Citation

Panomsak Meemon, Yutana Lenaphet, and Jadsada Saetiew "FPGA implementation of spectral fusing Gabor domain optical coherence microscopy", Proc. SPIE 11245, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXVII, 1124517 (17 February 2020); https://doi.org/10.1117/12.2544356

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KEYWORDS

Field programmable gate arrays

Digital signal processing

Optical filters

Bandpass filters

Linear filtering

Objectives

Filtering (signal processing)

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