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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 4, Iss. 10 — Oct. 1, 2013
  • pp: 2066–2077

Correction of image distortions in endoscopic optical coherence tomography based on two-axis scanning MEMS mirrors

Donglin Wang, Peng Liang, Sean Samuelson, Hongzhi Jia, Junshan Ma, and Huikai Xie  »View Author Affiliations

Biomedical Optics Express, Vol. 4, Issue 10, pp. 2066-2077 (2013)

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A two-axis scanning microelectromechanical (MEMS) mirror enables an optical coherence tomography (OCT) system to perform three-dimensional endoscopic imaging due to its fast scan speed and small size. However, the radial scan from the MEMS mirror causes various distortions in OCT images, namely spherical, fan-shaped and keystone distortions. In this paper, a new method is proposed to correct all of three distortions presented in OCT systems based on two-axis MEMS scanning mirrors. The spherical distortion is corrected first by directly manipulating the original spectral interferograms in the phase domain, followed by Fourier transform and three-dimensional geometrical transformation for correcting the other two types of distortions. OCT imaging experiments on a paper with square ink printed arrays and a glass tube filled with milk have been used to validate the proposed method. Distortions in OCT images of flat or curved surfaces can all be effectively removed.

© 2013 OSA

OCIS Codes
(100.6890) Image processing : Three-dimensional image processing
(110.4500) Imaging systems : Optical coherence tomography
(230.4685) Optical devices : Optical microelectromechanical devices

ToC Category:
Image Processing

Original Manuscript: July 1, 2013
Revised Manuscript: August 17, 2013
Manuscript Accepted: August 31, 2013
Published: September 6, 2013

Donglin Wang, Peng Liang, Sean Samuelson, Hongzhi Jia, Junshan Ma, and Huikai Xie, "Correction of image distortions in endoscopic optical coherence tomography based on two-axis scanning MEMS mirrors," Biomed. Opt. Express 4, 2066-2077 (2013)

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