Title :
Real-Time FPGA Processing for High-Speed Optical Frequency Domain Imaging
Author :
Desjardins, Adrien E. ; Vakoc, Benjamin J. ; Suter, Melissa J. ; Yun, Seok-Hyun ; Tearney, Guillermo J. ; Bouma, Brett E.
Author_Institution :
Harvard Biophys. Program, Boston, MA, USA
Abstract :
We present a novel algorithm for reconstructing interferograms acquired in optical frequency domain imaging (OFDI). The algorithm was developed specifically for processing in field programmable gate arrays (FPGAs) and featured the use of a finite-impulse-response (FIR) filter implementation of B-spline interpolation for efficiently re-sampling k-space. When implemented in FPGAs, the algorithm allowed for real-time processing of interferograms acquired with a high-speed OFDI system at 54 kHz and a sampling rate of 100 MS/s.
Keywords :
FIR filters; field programmable gate arrays; image reconstruction; medical image processing; optical tomography; B-spline interpolation; FIR filter; FPGA; OFDI; field programmable gate arrays; finite-impulse-response filter; high-speed optical frequency domain imaging; Field programmable gate arrays; Finite impulse response filter; Frequency domain analysis; High speed optical techniques; Image reconstruction; Interpolation; Optical filters; Optical imaging; Real time systems; Sampling methods; B-spline; digital signal processing; optical coherence tomography (OCT); optical frequency domain imaging (OFDI); real-time processing; Algorithms; Fingers; Humans; Interferometry; Signal Processing, Computer-Assisted; Skin;
Journal_Title :
Medical Imaging, IEEE Transactions on
DOI :
10.1109/TMI.2009.2017740
