Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Grain size measurement based on marked watershed algorithm

유역분할 알고리즘을 이용한 결정립 크기 측정

  • Kim, Beomsoo (Department of Mechanical System Engineering, Gyeongsang National University) ;
  • Yoon, Sangdoo (Department of Mechanical System Engineering, Gyeongsang National University) ;
  • Kwon, Jaesung (Department of Mechanical System Engineering, Gyeongsang National University) ;
  • Choi, Sungwoong (Department of Mechanical System Engineering, Gyeongsang National University) ;
  • Noh, Jungpil (Department of Energy Mechanical Engineering, Gyeongsang National University) ;
  • Yang, Jeonghyeon (Department of Mechanical System Engineering, Gyeongsang National University)
  • 김범수 (경상국립대학교 기계시스템공학과) ;
  • 윤상두 (경상국립대학교 기계시스템공학과) ;
  • 권재성 (경상국립대학교 기계시스템공학과) ;
  • 최성웅 (경상국립대학교 기계시스템공학과) ;
  • 노정필 (경상국립대학교 에너지기계공학과) ;
  • 양정현 (경상국립대학교 기계시스템공학과)
  • Received : 2022.12.13
  • Accepted : 2022.12.21
  • Published : 2022.12.31
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Abstract

Grain size of material is important factor in evaluating mechanical properties. Methods for grain size determination are described in ASTM grain size standards. However, conventional method require pretreatment of the surface to clarify grain boundaries. In this study, the grain size from the surface image obtained from scanning electron microscope was measured using the watershed algorithm, which is a region-based method among image segmentation techniques. The shapes of the crystals are similar to each other, but the size and growth height are different. In addition, crystal grains are adjacent to each other, so it is very similar to the shape image of the topography. Therefore, grain boundaries can be efficiently detected using the Watershed algorithm.

Keywords

References

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