제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Speckle Reduction in the Wavelet Domain for Image with Optical Coherence Tomography

  • Chang, Ju-Wan (Department of Electronic Engineering, The University of Suwon) ;
  • Lee, Chang-Su (Department of Electronic Engineering, The University of Suwon) ;
  • Na, Ji-Hoon (Department of Information and Communications, Gwangju Institute of Science and Technology) ;
  • Paes, Stephane (Department of Information and Communications, Gwangju Institute of Science and Technology) ;
  • Lee, Byeong-Ha (Department of Information and Communications, Gwangju Institute of Science and Technology)
  • Published : 2005.06.02
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Abstract

Optical coherence tomography (OCT) is high resolution medical imaging system which is obtaining image inside biological objects with non-destructive method. OCT system is based on Michelson interferometer with a reciprocating mirror in the reference arm and a biological object in the sample arm. The obtained OCT image suffers from a granular or mottled image, called speckle. Speckle is caused by random interferences between reflected coherence waves. In this paper, we propose effective speckle reduction method that uses wavelet transform. With wavelet domain image, sub-windowing and thresholding are performed. Finally, speckle reduction experiments for Misgurnus mizolepis skin and rat eye images are shown.

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