Abstract
The present study proposes a single-camera 3D deformation measurement method using the data-driven reduced-order model and evaluates its accuracy using a foundation-shape model. Photogrammetry is applied to the stereo camera measurement and the training data for a reduced-order model was constructed. The singular value decomposition is applied to the training data and the linear reduced-order model was constructed. Three types of the linear regression model were proposed and their estimation accuracy was evaluated. Regardless of the model, single-camera deformation measurement can measure the three-dimensional coordinates with an accuracy of less than 0.4~mm. Therefore, the proposed method has the possibility to perform the simultaneous measurement of the PSP and deformations.
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