Volume 6 Issue 4
Aug.  2013
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WANG Yong-hong, LIANG Heng, WANG Shuo, ZHANG Hao, YANG Lian-xiang. Advance in digital speckle correlation method and its applications[J]. Chinese Optics, 2013, 6(4): 470-480. doi: 10.3788/CO.20130604.0470
Citation: WANG Yong-hong, LIANG Heng, WANG Shuo, ZHANG Hao, YANG Lian-xiang. Advance in digital speckle correlation method and its applications[J]. Chinese Optics, 2013, 6(4): 470-480. doi: 10.3788/CO.20130604.0470

Advance in digital speckle correlation method and its applications

doi: 10.3788/CO.20130604.0470
  • Received Date: 13 Apr 2013
  • Rev Recd Date: 15 Jun 2013
  • Publish Date: 10 Aug 2013
  • Digital speckle correlation(DSCM) is a noncontact measuring method for displacements and strains, which obtains the mechanical properties of an object by calculating the gray information correlation of the object images before and after deformations. The method has been applied successfully in mechanical measurements in the past twenty years. This paper introduces the developing states of the DSCM and gives application examples. Some new technologies involved in the DSCM are reviewed, such as genetic algorithm, neural networks and wavelet transform. Finally, it points out that DSCM research will focus on improving measuring accuracy and image processing speeds in the future, including improving speckle image quality and researching higher effective algorithms.

     

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