Crack image extraction using a radial basis functions based level set interpolation technique

Hoangnam Nguyen*, Tai-Yan Kam, Pi-Ying Cheng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The extraction of crack images is an important process in the area of structural health monitoring for determining the severity of the damage induced by cracks. In this paper, a radial basis functions (RBFs) based level set interpolation technique is proposed to extract the images of cracks in structures. In the proposed method, the level set in the form of radial basis functions with an ellipse constraint can represent accurately various shapes without requiring building interior and exterior layers for the sparse mesh grid of RBFs centers or using information on contour/surface normal. The initial distance function embedded in the ellipse-constrained RBFs can be interpolated on a much coarser grid. Its deformation is considered as an updating of the RBFs coefficients by solving an ordinary differential equation (ODE) and a non-convex quadratically constrained quadratic programming (QCQP). The use of a semi-definite relaxation technique in solving the non-convex QCQP problem has shown that initialization and re-initialisation are no longer necessary. The images of a number of cracks have been extracted using the proposed method. It has been shown that the proposed method can extract crack images efficiently with coarse grid of RBFs centers and is also less sensitive to the distribution of the crack images in the domain.

Original languageEnglish
Title of host publicationProceedings - 2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012
Pages118-122
Number of pages5
DOIs
StatePublished - 21 May 2012
Event2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012 - Hangzhou, Zhejiang, China
Duration: 23 Mar 201225 Mar 2012

Publication series

NameProceedings - 2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012
Volume3

Conference

Conference2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012
CountryChina
CityHangzhou, Zhejiang
Period23/03/1225/03/12

Keywords

  • crack identification
  • deformable model
  • heath monitoring
  • level set interpolation
  • quadratically constrained quadratic programming (QCQP)
  • radial basis functions (RBFs)
  • semidefinite relaxation (SDR)

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  • Cite this

    Nguyen, H., Kam, T-Y., & Cheng, P-Y. (2012). Crack image extraction using a radial basis functions based level set interpolation technique. In Proceedings - 2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012 (pp. 118-122). [6188180] (Proceedings - 2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012; Vol. 3). https://doi.org/10.1109/ICCSEE.2012.462