| 摘要 |
PURPOSE: A method for three-dimensional measuring the vibration of a structure based on photogrammetry is provided to secure the precision and the reliability of measured three-dimensional vibration characteristic by synchronizing stereo images per times. CONSTITUTION: A corresponding target per time is photographed by synchronizing different photographing devices(S100). Different images are matched per time, and image coordinates per time with respect to the corresponding target are calculated(S200). Based on the initially photographed image of the image coordinates, the focal distance, the principle point displacement, the radiation distortion amount, the position, and the posture of the photographing devices are determined(S300). The three dimensional coordinate of the corresponding target is calculated(S400). Based on the three dimensional coordinate, the three dimensional displacement of the corresponding target is calculated(S500).
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