TY - GEN
T1 - Time-related monitoring of crack changes on concrete structures
AU - Sohn, H. G.
AU - Lim, Y. M.
AU - Kim, G. H.
AU - Pi, M. H.
PY - 2003
Y1 - 2003
N2 - A major goal of this research is the automation of crack monitoring in concrete structures by quantifying the changes detected from the sequential images during monitoring period. The periodic image series for monitoring are taken using a precise metric camera. This task is based on the idea that one can derive information about the change strictly from its imagery once the geometric relationship between data sets is correctly recovered. The goal is achieved by using the conformal transformation based on the Modified Iterated Hough Transform (MIHT) algorithm, the result of which solves the orientation parameters of the camera when the correspondence is not known. To improve the computational operation of MIHT, the optimum sequence and regions of parameter estimation are also investigated. The developed algorithm is applied to a simulated set of linear crack changes. Finally, the changes of cracks pattern occurred in the sequence of images of the actual concrete specimen are detected.
AB - A major goal of this research is the automation of crack monitoring in concrete structures by quantifying the changes detected from the sequential images during monitoring period. The periodic image series for monitoring are taken using a precise metric camera. This task is based on the idea that one can derive information about the change strictly from its imagery once the geometric relationship between data sets is correctly recovered. The goal is achieved by using the conformal transformation based on the Modified Iterated Hough Transform (MIHT) algorithm, the result of which solves the orientation parameters of the camera when the correspondence is not known. To improve the computational operation of MIHT, the optimum sequence and regions of parameter estimation are also investigated. The developed algorithm is applied to a simulated set of linear crack changes. Finally, the changes of cracks pattern occurred in the sequence of images of the actual concrete specimen are detected.
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M3 - Conference contribution
AN - SCOPUS:84857745026
SN - 9058096483
SN - 9789058096487
T3 - Structural Health Monitoring and Intelligent Infrastructure - Proceedings of the 1st International Conference on Structural Health Monitoring and Intelligent Infrastructure
SP - 725
EP - 731
BT - Structural Health Monitoring and Intelligent Infrastructure - Proceedings of the 1st International Conference on Structural Health Monitoring and Intelligent Infrastructure
T2 - 1st International Conference on Structural Health Monitoring and Intelligent Infrastructure, SHMII-1'2003
Y2 - 13 November 2003 through 15 November 2003
ER -