Measuring system for cracks in concrete using multitemporal images

Liang Chien Chen, Yi Chen Shao, Huang Hsiang Jan, Chen Wei Huang, Yong Ming Tien

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


In this paper we discuss a semiautomatic measuring system that can extract images of cracks in the surface of concrete from multitemporal images. An accuracy assessment and analysis of the relationship between expansion of the concrete and crack width are also included. The proposed scheme is comprised of four major components: (1) imaging geometry modeling for camera calibration; (2) initialization and skeletonization of cracks using the developed graphical user interface; (3) automatic crack tracing and width determination; and (4) multitemporal image processing and analysis. The experimental results indicate that the consistency of crack widths between the automatic extraction method and the manual measurement method could reach 0.05mm or better.

Original languageEnglish
Pages (from-to)77-82
Number of pages6
JournalJournal of Surveying Engineering
Issue number2
StatePublished - May 2006


  • Concrete
  • Cracking
  • Imaging techniques
  • Measurement


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