Share Email Print
cover

Proceedings Paper

FPGA-based non-uniform fast Fourier transform (NUFFT) algorithm for real-time OCT signal processing
Author(s): A. Bossen; S. Remund; D. Ernst; Ch. Meier; T. von Niederhäusern; M. Duelk; K. Vemishetty
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We developed an FPGA-based engine for Fourier-domain OCT that performs real-time signal processing based on Non- Uniform Fast Fourier Transform (NUFFT). The basic NUFFT algorithm is discussed and compared with cubic-spline interpolation regarding efficient re-sampling in k-space with different phase nonlinearities of sinusoidal swept sources. The NUFFT algorithm was adapted for an implementation in an FPGA and its accuracy is analyzed and assessed using simulated numerical data. When implemented, the NUFFT algorithm allows a processing performance at a sampling rate of 100 MS/s. The real-time processing capability was tested with sinusoidal bi-directional swept sources with A-scan rates of 50 kHz.

Paper Details

Date Published: 20 March 2013
PDF: 7 pages
Proc. SPIE 8571, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII, 85712Y (20 March 2013); doi: 10.1117/12.2006391
Show Author Affiliations
A. Bossen, Berner Fachhochschule Technik und Informatik (Switzerland)
S. Remund, Berner Fachhochschule Technik und Informatik (Switzerland)
D. Ernst, Berner Fachhochschule Technik und Informatik (Switzerland)
Ch. Meier, Berner Fachhochschule Technik und Informatik (Switzerland)
T. von Niederhäusern, Exalos AG (Switzerland)
M. Duelk, Exalos AG (Switzerland)
K. Vemishetty, National Instruments Corp. (United States)


Published in SPIE Proceedings Vol. 8571:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

© SPIE. Terms of Use
Back to Top