대한기관식도과학회지 (Korean Journal of Bronchoesophagology)

대한기관식도과학회 (The Korean Bronchoesophagological Society)
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RGB 채널치환을 이용한 내시경영상 향상을 위한 예비 연구

Enhancement of Endoscopic Images by RGB Channel Substitution Image Processing, a Preliminary Report

  • 이동환 (울산대학교 의과대학 서울아산병원 이비인후과학교실) ;
  • 양찬주 (울산대학교 의과대학 서울아산병원 이비인후과학교실) ;
  • 정훈용 (울산대학교 의과대학 서울아산병원 내과학교실) ;
  • 이재령 (울산대학교 의과대학 서울아산병원 이비인후과학교실) ;
  • 남수정 (울산대학교 의과대학 서울아산병원 이비인후과학교실) ;
  • 최승호 (울산대학교 의과대학 서울아산병원 이비인후과학교실)
  • Lee, Dong Hwan (Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Yang, Chan Joo (Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Jung, Hwoon-Yong (Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Lee, Jaeryung (Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Nam, Soo-Jung (Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Choi, Seung-Ho (Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine)
  • 투고 : 2012.11.24
  • 심사 : 2012.11.30
  • 발행 : 2012.12.30
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초록

Background Neoplastic vessels tend to proliferate on the surface of malignant lesions in the aerodigestive tract. So, superficial malignant lesions can be detected earlier by enhancing mucosal vascular clarity. To enhance mucosal vascular clarity on endoscopic image, we developed an image processing algorithm of RGB (red-green-blue) channel substitution image (CSI). Methods Each pixel in original white light image (WLI) has its own value of red, green and blue channel. Various combinations of RGB channel substitution was tried on original WLI. Results To make superficial blood vessels darker than brighter background mucosa, in the CSI algorithm, RGB value in each pixel of WLI is substituted; red value to green one, green value to blue one. There was a good contrast between superficial mucosal vessels and background brighter mucosa in the CSI image. Conclusion By RGB CSI algorithm, WLI could be successfully converted to new images with enhanced mucosal vascular clarity. Using RGB CSI algorithm could provide added vascular visibility on original WLI.

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