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Multi-scale Crack Detection Using Scaling

스케일링을 이용한 다중 스케일 균열 검출

  • Kim, Young-Ro (Dept. of Computer Science and Information, Myongji College) ;
  • Oh, Tae-Myung (Dept. of Computer and Electronic Engineering, Myongji College)
  • 김영로 (명지전문대학 컴퓨터정보과) ;
  • 오태명 (명지전문대학 컴퓨터전자과)
  • Received : 2013.06.05
  • Published : 2013.09.25

Abstract

In this paper, we propose a multi-scale crack detection method using scaling. It is based on morphology algorithm, crack features, and scaling. We use a morphology operator which extracts patterns of crack. It segments cracks and background using opening and closing operations. Morphology based segmentation is better than existing integration methods using subtraction in detecting a crack it has small width. However, morphology methods using only one structure element could detect only fixed width crack. Thus, we use a scaling method. We use bilinear interpolation for scaling. Our method calculates values of properties such as the number of pixels and the maximum length of the segmented region. We decide whether the segmented region belongs to cracks according to those data. Experimental results show that our proposed multi-scale crack detection method has better results than those of existing detection methods.

본 논문에서는 스케일링을 이용한 다중 스케일 균열 검출 방법을 제안한다. 제안하는 방법은 형태학 알고리즘, 균열 특징, 스케일링을 기반으로 한다. 사용하는 형태학 연산자는 균열의 패턴을 추출한다. 열림과 닫힘의 연산을 이용하여 균열과 배경을 구분한다. 형태학을 기반으로 하는 분할은 작은 간격의 균열을 검출하는 기존의 차분 이용 통합 방법 보다 좋은 성능을 보인다. 그러나, 형태학 방법들은 오직 하나의 구조 연산자를 사용하면 고정된 크기의 균열만을 검출할 수 있다. 따라서 스케일링 방법을 사용한다. 스케일링에 이중선형 보간법을 사용한다. 제안하는 방법은 분할된 영역의 화소 수와 최대 길이와 같은 특징들의 값들을 계산한다. 구분된 영역이 균열에 해당하는 지를 계산한 특징들의 값들에 의하여 결정한다. 실험 결과에서 제안한 다중 스케일 균열 검출 방법이 기존의 검출 방법들보다 향상된 결과를 보인다.

Keywords

References

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