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30 July 2001 Evaluation of structural dynamic characteristics using CCD measurement principle
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The CCD measuring technique is effectively applicable to structures which are not physically accessible or contain the radioactive waste material or other harmful materials to man. Unlike other measuring systems with numerous sensors attached to the structure, it simplifies the complicated problems in transferring the signal and thereby makes it possible to work more effectively. Such a non-contact type of CCD measuring technique is suggested to measure some structural characteristics of civil infrastructures. Calibration of this system is performed based on the DLT theory. And based on the calibration, 3D coordinates for changing displacement of a structure are measured. This measuring system also compares the result of trigonometrical leveling in terms of its exactitude.
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Man-Yong Choi, Gwanghee Heo, Kyeongsik Park, and Sewook Oh "Evaluation of structural dynamic characteristics using CCD measurement principle", Proc. SPIE 4330, Smart Structures and Materials 2001: Smart Systems for Bridges, Structures, and Highways, (30 July 2001);

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