Digital speckle image correlation method base on particle swarm optimization algorithm
-
1.
College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
-
Corresponding author:
WANG Kaifu, kfwang@nuaa.edu.cn
;
-
Received Date:
2013-09-16
Accepted Date:
2013-12-02
-
Abstract
In order to get the integer pixel displacement information and the sub-pixel displacement information simultaneously at one time, the sub-pixel subarea was constructed by using the method of gray interpolation and the digital image correlation method based on particle swarm optimization algorithm was proposed. The applicability of the method was verified by measuring both the simulated speckle pattern with the translational information and with the strain information. And then, the integer pixel particle swarm algorithm and the sub-pixel of different magnitude interpolation gray particle swarm algorithm were compared by measuring the specimen with tiny rotational displacement. The results show that the particle swarm algorithm based on sub-pixel digital scattered spot image correlation method has advantages for small displacement measurement.
-
-
References
|
[1]
|
KENNEDY J, EBERHART R C. Particle swarm optimization // The University of Western Australia. IEEE International Conference on Neural Networks. Perth, Australia: The University of Western Australia,1995:1942-1948. |
|
[2]
|
XIE X F, ZHANG W J, YANG ZH L. Overview of particle swarm optimization [J]. Control and Decision, 2003, 18(2): 129-134 (in Chinese) . |
|
[3]
|
YAMAGUCHI I. A laser speckle strain gauge [J]. Journal of Physics, 1981, E14(11): 1270-1273. |
|
[4]
|
PETERS W H, RANSON W F. Digital imaging technique in experimental stress analysis[J]. Optical Engineering, 1982, 21(3): 427-431. |
|
[5]
|
WANG K F, GAO M H, ZHOU K Y. Modern photo mechanics [M]. Harbin: Harbin Institute of Technology Press, 2009: 58-61,154-156(in Chinese). |
|
[6]
|
XU X, WANG K, GU G Q, et al. Measurement of internal material flaws based on out-of-plane displacement digital speckle pattern interferometry[J]. Laser Technology, 2012, 36(4):548-552(in China). |
|
[7]
|
JIN G C. Computer-aided optical measurement [M]. 2nd ed. Beijing: Tsinghua University Press, 2007: 141-147(in Chinese). |
|
[8]
|
LIU M. The improved genetic algorithms for digital image correlation technique. Tianjin: Tianjin University, 2005: 4-6(in Chinese). |
|
[9]
|
PAN B, XIE H M. Digital image correlation method with differential evolution [J]. Journal of Optoelectronics稬aser, 2007, 18(1): 100-103(in Chinese).
|
|
[10]
|
DU Y Zh, WANG X B. Digital image correlation method based on particle swarm optimization algorithm without sub-pixel interpolation [J]. Computer Engineering and Applications, 2012, 48(6): 200-204(in Chinese). |
|
[11]
|
CHANG Y M. Research and application of sub-pixel search algorithm for digital image/speckle correlation method . Tianjin: Tianjin University, 2009: 12-14(in Chinese). |
|
[12]
|
GU G Q, WANG K F, XU X. Measurement of in-plane micro-rotations and rotation-center location of a rigid body by using digital image correlation[J]. Chinese Journal of Lasers, 2012, 39(1): 0108004(in Chinese). |
-
-
Proportional views
-
Map
DownLoad: