TY - GEN
T1 - A study on photogrammetric algorithm for crack width measurement
AU - Nishiyama, S.
AU - Tsubosaka, T.
AU - Kikuchi, T.
AU - Yano, T.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - This paper presents a study on the deveopment of digital image processing and photogrametric algorithm for crack behavior monitoring. In the measurement technique using our algorithm proposed here, the deformation of the crack is calculated from one piece of image taken from an arbitrary camera position. In our developed method, reflective targets are established at the measurement points around the crack as gauges and the two dimensional displacement of the crack width, which are tensile and shear displacement, is calculated based on the coordinates of the reflective targets. In this paper, experiments were performed to measure the relation between the distance and angle of photographic positions from the targets, and we verify the accuracy and precision of the measurement algorithm.
AB - This paper presents a study on the deveopment of digital image processing and photogrametric algorithm for crack behavior monitoring. In the measurement technique using our algorithm proposed here, the deformation of the crack is calculated from one piece of image taken from an arbitrary camera position. In our developed method, reflective targets are established at the measurement points around the crack as gauges and the two dimensional displacement of the crack width, which are tensile and shear displacement, is calculated based on the coordinates of the reflective targets. In this paper, experiments were performed to measure the relation between the distance and angle of photographic positions from the targets, and we verify the accuracy and precision of the measurement algorithm.
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U2 - 10.1201/b17435-99
DO - 10.1201/b17435-99
M3 - Conference contribution
AN - SCOPUS:84907320048
SN - 9781138001480
T3 - Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
SP - 581
EP - 586
BT - Computer Methods and Recent Advances in Geomechanics - Proc. of the 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
PB - Taylor and Francis - Balkema
T2 - 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
Y2 - 22 September 2014 through 25 September 2014
ER -