Dimension Measurement of Nuclear Fuel Rods Using an Image Processing Technology

영상처리기술에 의한 핵연료봉의 제원 측정

  • Koo, D.S. (Korea Atomic Energy Research Institute) ;
  • Min, D.K. (Korea Atomic Energy Research Institute) ;
  • You, G.S. (Korea Atomic Energy Research Institute) ;
  • Shin, H.S. (Korea Atomic Energy Research Institute) ;
  • Hong, K.P. (Korea Atomic Energy Research Institute)
  • Published : 1999.04.30

Abstract

An image processing technology was developed to measure the dimension of nuclear fuel rods and the diameter of nuclear fuel rods was measured by this method. It was confirmed that parameters such as camera-to-specimen distance. camera location, light intensity and light characteristic would affect dimension measurement of nuclear fuel rods. The percent relative error and percent standard deviation of measuring the diameter of nuclear fuel rods using image processing method were 4.88%, ${\pm}3.34%$ while the percent relative error and percent standard deviation using conventional method were 12.7%, ${\pm}9.72%$, respectively. The accuracy of diameter measurement of nuclear fuel rods using image processing method was about 3 times as high as that using conventional method.

영상처리 방법에 의한 핵연료봉의 제원을 측정하기 위하여 영상처리 소프트웨어를 개발하고 핵연료봉의 직경을 측정하였다. 카메라와 시험체간의 거리, 카메라 위치, 조명세기 및 조명종류와 같은 요소가 핵연료봉 제원 측정에 영향을 미침을 확인하였다. 영상처리 방법에 의한 핵연료봉 직경의 백분율 측정 상대오차는 4.88%이고 백분율 측정 표준편차는 ${\pm}3.34%$였다. 한편 영상처리 방법이 아닌 기존 방법에 의한 백분율 측정 상대오차는 12.77%이고 백분율 측정 표준편차는 ${\pm}9.72%$였으며, 영상처리 방법에 의한 직경 측정 정확도가기존 방법에 의한 결과보다 약 3배정도 향상되었다.

Keywords