Pengxiang Ge, Guihua Li. Application of a Combinatorial DIC Algorithm in Sub-Pixel Displacement Measurement[J]. Laser & Optoelectronics Progress, 2018, 55(11): 111202
- Laser & Optoelectronics Progress
- Vol. 55, Issue 11, 111202 (2018)
Fig. 1. Basic principle of DIC. (a) Image before deformation; (b) image after deformation
Fig. 2. Diagram of quadric surface fitting
Fig. 3. Simulated speckle pattern before and after translation. (a) Before translation; (b) after translation
Fig. 4. Relative error of sub-pixel displacement
Fig. 5. Relative error of integer pixel displacement
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Table 1. Search time of several algorithmss
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Table 2. Measurement results of combinatorial DIC algorithm
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