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Proceedings Paper

Full-field optical coherence tomography image restoration based on Hilbert transformation
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Paper Abstract

We propose the envelope detection method that is based on Hilbert transform for image restoration in full-filed optical coherence tomography (FF-OCT). The FF-OCT system presenting a high-axial resolution of 0.9 &mgr;m was implemented with a Kohler illuminator based on Linnik interferometer configuration. A 250 W customized quartz tungsten halogen lamp was used as a broadband light source and a CCD camera was used as a 2-dimentional detector array. The proposed image restoration method for FF-OCT requires only single phase-shifting. By using both the original and the phase-shifted images, we could remove the offset and the background signals from the interference fringe images. The desired coherent envelope image was obtained by applying Hilbert transform. With the proposed image restoration method, we demonstrate en-face imaging performance of the implemented FF-OCT system by presenting a tilted mirror surface, an integrated circuit chip, and a piece of onion epithelium.

Paper Details

Date Published: 7 February 2007
PDF: 9 pages
Proc. SPIE 6429, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI, 64292U (7 February 2007); doi: 10.1117/12.702266
Show Author Affiliations
Jihoon Na, Gwangju Institute of Science and Technology (South Korea)
Woo June Choi, Gwangju Institute of Science and Technology (South Korea)
Eun Seo Choi, Chosun Univ. (South Korea)
Seon Young Ryu, Gwangju Institute of Science and Technology (South Korea)
Byeong Ha Lee, Gwangju Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 6429:
Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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