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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 21 — Jul. 20, 2010
  • pp: 4044–4051

Study of the performance of different subpixel image correlation methods in 3D digital image correlation

Zhenxing Hu, Huimin Xie, Jian Lu, Tao Hua, and Jianguo Zhu  »View Author Affiliations


Applied Optics, Vol. 49, Issue 21, pp. 4044-4051 (2010)
http://dx.doi.org/10.1364/AO.49.004044


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Abstract

The three-dimensional digital image correlation (3D-DIC) method is rapidly developing and is being widely applied to engineering and manufacturing. Despite its extensive use, the error caused by different image matching algorithms is seldom discussed. An algorithm for 3D speckle image generation is proposed, and the performances of different subpixel correlation algorithms are studied. The advantage is that there is no interpolation bias of texture in the simulation before and after deformation, and the error from the interpolation of speckle can be omitted in this algorithm. An error criterion for 3D reconstruction is proposed. 3D speckle images were simulated, and the performance of four subpixel algorithms is addressed. Based on the research results of different subpixel algorithms, a first-order Newton–Raphson iteration method and gradient-based method are recommended for 3D-DIC measurement.

© 2010 Optical Society of America

OCIS Codes
(150.0155) Machine vision : Machine vision optics
(150.1135) Machine vision : Algorithms
(120.4880) Instrumentation, measurement, and metrology : Optomechanics

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: January 27, 2010
Revised Manuscript: June 5, 2010
Manuscript Accepted: June 24, 2010
Published: July 15, 2010

Citation
Zhenxing Hu, Huimin Xie, Jian Lu, Tao Hua, and Jianguo Zhu, "Study of the performance of different subpixel image correlation methods in 3D digital image correlation," Appl. Opt. 49, 4044-4051 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-21-4044

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