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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 2,
  • Issue 10,
  • pp. 574-577
  • (2004)

The improved genetic algorithms for digital image correlation method

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Abstract

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.

© 2005 Chinese Optics Letters

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