| The improved genetic algorithms for digital image correlation method |
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| 作者姓名： | 唐晨 刘铭 闫海青 张桂敏 陈湛青 |
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| 作者单位： | Department of Applied Physics，University of Tianjin，Tianjin 300072，Department of Applied Physics，University of Tianjin，Tianjin 300072，Department of Applied Physics，University of Tianjin，Tianjin 300072，Department of Applied Physics，University of Tianjin，Tianjin 300072，Department of Mechanical Engineering and Automation，Harbin Institute of Technology，Harbin 150001 |
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| 基金项目： | This work was supported by 985 Education Development Plan of Tianjin University |
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| 摘 要： | We present a global optimization method, called the genetic algorithms (GAs), for digital image/speckle correlation (DISC). The new algorithms do not involve reasonable initial guess of displacement and deformation gradient and the calculation of second-order spatial derivatives of the digital images, which are important challenges in practical implementation of DISC. The performance of a GA depends largely on the selection of the genetic operators. We test various operators and propose optimal operators. The algorithms are then verified using simulated images and experimental speckle images.
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