Fig. 1. Diagram of rotation matrix model imaging of Scheimpflug camera

Fig. 2. Epipolar geometry of stereo Scheimpflug cameras

Fig. 3. Epipolar rectification strategy of stereo Scheimpflug cameras. (a) Stereo Scheimpflug cameras; (b) ordinary stereo cameras; (c) rectified stereo cameras

Fig. 4. Epipolar rectification results of typical stereo Scheimpflug camera. (a) Original stereo image pair; (b) rectified image pair

Fig. 5. Reconstruction results of stereo Scheimpflug cameras for plane targets. (a) Reconstructed 3D checkerboard points and fitted plane; (b) error distribution of reconstructed plane

Fig. 6. Experimental apparatus of stereo-DIC. (a) Setup for three-point bending test; (b) specimen geometry; (c) ROI on specimen surface (rectangle area)

Fig. 7. Specimen surface images obtained by different imaging modes. (a) Traditional camera; (b) Scheimpflug camera

Fig. 8. Performance of stereo-DIC based on Scheimpflug cameras. (a) Comparison of displacement measured value and displacement station output value; (b) error in displacement measurement