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http://dx.doi.org/10.5302/J.ICROS.2006.12.4.364

Speckle Reduction Method in Wavelet Domain for OCT Image Enhancement  

Lee Chang-Su (수원대학교 전자공학과)
Na Ji-Hoon (광주과학기술원 정보통신공학과)
Lee Byeong-Ha (광주과학기술원 정보통신공학과)
Chang Ju-Wan (수원대학교 전자공학과)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.12, no.4, 2006 , pp. 364-370 More about this Journal
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.
Keywords
OCT (Optical Coherence Tomography); wavelet; speckle; Wiener filter;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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