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  • Vol. 36, Iss. 16 — Aug. 15, 2011
  • pp: 3070–3072

Accuracy enhancement of digital image correlation with B-spline interpolation

Long Luu, Zhaoyang Wang, Minh Vo, Thang Hoang, and Jun Ma  »View Author Affiliations


Optics Letters, Vol. 36, Issue 16, pp. 3070-3072 (2011)
http://dx.doi.org/10.1364/OL.36.003070


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Abstract

The interpolation algorithm plays an essential role in the digital image correlation (DIC) technique for shape, deformation, and motion measurements with subpixel accuracies. At the present, little effort has been made to improve the interpolation methods used in DIC. In this Letter, a family of recursive interpolation schemes based on B-spline representation and its inverse gradient weighting version is employed to enhance the accuracy of DIC analysis. Theories are introduced, and simulation results are presented to illustrate the effectiveness of the method as compared with the common bicubic interpolation.

© 2011 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(150.1135) Machine vision : Algorithms
(120.6165) Instrumentation, measurement, and metrology : Speckle interferometry, metrology

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: May 19, 2011
Revised Manuscript: July 12, 2011
Manuscript Accepted: July 13, 2011
Published: August 8, 2011

Citation
Long Luu, Zhaoyang Wang, Minh Vo, Thang Hoang, and Jun Ma, "Accuracy enhancement of digital image correlation with B-spline interpolation," Opt. Lett. 36, 3070-3072 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-16-3070


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