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- W4323539281 abstract "Owing to the advantages of cost-effectiveness, compactness, and the avoidance of complicated camera synchronization, single-camera three-dimensional (3D) digital image correlation (DIC) techniques have gained increasing attention for deformation measurement of materials and structures. In the traditional single-camera 3D-DIC system, the left and right view images can be recorded by a single camera using a diffraction grating, a bi-prism or a set of planar mirrors. To further improve the measurement accuracy of single-camera 3D-DIC, this paper introduces a single-camera four-view imaging technique by installing a pyramidal prism in front of the camera. The 3D reconstruction of the measured points before and after deformation is realized with eight governing equations induced by four views, and the strong geometric constraints of four views can help to improve the measurement accuracy. A static experiment, a rigid body translation experiment and a four-point bending experiment show that the proposed single-camera 3D-DIC method can achieve higher measurement accuracy than the dual-view single-camera 3D-DIC techniques and has advantages in reducing both random error and systematic error." @default.
- W4323539281 created "2023-03-09" @default.
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- W4323539281 date "2023-03-08" @default.
- W4323539281 modified "2023-09-27" @default.
- W4323539281 title "Accuracy-Enhanced Single-Camera Three-Dimensional Digital Image Correlation Based on Four-View Imaging" @default.
- W4323539281 doi "https://doi.org/10.20944/preprints202303.0148.v1" @default.
- W4323539281 hasPublicationYear "2023" @default.
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