A Fast Interpolation Algorithm Based on the Fractal in the Digital Speckle Sub-Pixel Displacement Measurement

Yuan Luo; Yuan Liu

doi:10.4028/www.scientific.net/AMM.344.238

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 344A Fast Interpolation Algorithm Based on the...

A Fast Interpolation Algorithm Based on the Fractal in the Digital Speckle Sub-Pixel Displacement Measurement

Abstract:

The Digital Speckle Correlation Method is a non-contact in-plane displacement measurement method based on machine vision. The spline, the linear or the bi-cubic interpolation algorithm is often used in the sub-pixel algorithm. The block effect or the edges blurring, however, could occur in these algorithms. Therefore, a fast interpolation algorithm based on fractal theory is proposed in this paper. The results indicate that this algorithm can overcome either the blocking effect or the edge blurring caused by the traditional interpolation algorithm. In addition, with the same sub-pixel accuracy, the shortest time is required.

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Periodical:

Applied Mechanics and Materials (Volume 344)

Pages:

238-241

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.344.238

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Online since:

July 2013

Authors:

Yuan Luo, Yuan Liu

Keywords:

Digital Speckle Correlation Method, Fractal, Interpolation Algorithm, Sub-Pixel

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