Ye Pei, Zhang Mei, Ma Wanlong, Zhu Tiantian, Li Guihua. Improved Climbing Algorithm for Digital Image Correlation Displacement Measurements[J]. Laser & Optoelectronics Progress, 2020, 57(2): 21506
- Laser & Optoelectronics Progress
- Vol. 57, Issue 2, 21506 (2020)
Fig. 1. Basic principle diagram of DIC
Fig. 2. Diagram of climbing method
Fig. 3. Diagram of eight adjacent points
Fig. 4. Flow chart of improved climbing method
Fig. 5. Serial displacement images. (a) Reference map; (b) 1--50 pixel displacement
Fig. 6. Research results of traditional climbing method
Fig. 7. Research results of improved climbing method
Fig. 8. Influence of step-size change coefficient S on search time. (a) Displacement is 25 pixel; (b) subarea size is 51 pixel×51 pixel
Fig. 9. Influence of measured displacement on search time. (a) Sub area size is 51 pixel×51 pixel; (b) S=9
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Table 1. Comparison of experimental results between improved climbing method and traditional climbing method
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Table 2. Measurement results of improved climbing method for displacement of 90--100 pixel
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