대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제13권2호
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  • Pages.115-124
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  • 1992
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  • 1229-0807(pISSN)
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  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
권호 표지

퍼지 Hough 변환에 의한 2-D 심초음파도에서의 좌심실 윤곽 자동검출

Automatic Detection of Left Ventricular Contour from 2-D Echocardiograms using Fuzzy Hough Transform

  • 조진호 (경북대학교 공과대학 전자공학과 및 경북대학교병원 의공학과) ;
  • ;
  • K.P
  • 발행 : 1992.06.01
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초록

An algorithm has been proposed for the automatic detection of optimal epiand endocardial left ventricular borders from 2-D short axis echocardiogram which is degraded by noise and echo drop out. For the implementation of the algorithm, we modified Ballard's Generalized Hough Transform which can be applicable only for deterministic object border, and newly proposed Fuzzy Hough Transform method. The algorithm presented here allows detection of object whose exact shapes are unknown. The algorithm only requires an approximate model of target object based on anatomical data. To detect the approximate epicardial contour of left ventricle, Fuzzy Hough Transform was applied to the echocardiogram. The optimal epicardial contour was founded by using graph searching method which contains cost function analysis process. Using this optimal epicardial contour and average thickness imformation of left ventricular wall, the approximate endocardial line was founded, and graph searching method was also used to detect optimal endocardial contour.

키워드

참고문헌

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