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Real-Time Surface Tracking System using Common-Path Spectral Domain Optical Coherence Tomography
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- Authors
- Keo-Sik Kim, Hyoung-Jun Park, Hyun Seo Kang, Jin U. Kang, Chul-Gyu Song
- Issue Date
- 2012-11
- Citation
- Optical Engineering, v.51, no.11, pp.1-4
- ISSN
- 0091-3286
- Publisher
- SPIE
- Language
- English
- Type
- Journal Article
- Abstract
- An enhanced surface tracking system based on optical coherence tomography (OCT) modality has been developed and tested for use in a surgical guidance system. A surface detection algorithm based on a Savitzky-Golay filter of A-scan data and thresholding was applied to realtime depth tracking. The algorithm output controlled a motorized stage to adjust the probe position according to the sample 's topological variance in real-time. As a result, the root mean square error (RMSE: 4.2 μm) of our algorithm was relatively lower than the conventional method (RMSE: 16.6 μm). Also, OCT images obtained using the algorithm showed a significantly extended imaging range and active surface tracking in real time. Consequently, the devised method demonstrated potential for use in systems for guiding surgical robots and endoscopic OCT. © 2012 Society of Photo-Optical Instrumentation Engineers (SPIE).
- KSP Keywords
- A-scan, Active surface, Common path, Conventional methods, Depth tracking, Detection algorithm, Enhanced surface, OCT images, Optical Coherence Tomography(OCT), Optical instrumentation, Probe position