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Proceedings Paper

Wavelet transform based on digital speckle correlation method: principle and algorithm
Author(s): Hong Miao; Fei Ge; Zhenyu Jiang; Xiaoping Wu; Jian Lu
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Paper Abstract

A new digital speckle correlation method, the Wavelet Transform based DSCM (WTDSCM) is presented. By this method, the two images of an object before and after loading can be expanded into two series of sub-images according to their frequency band respectively by wavelet transform. Choosing the suitable sub- images pairs mainly contributed by signal speckles, and then inducing the DSCM to calculate the deformation of the object, the probability of mismatch caused by noise could be reduced and the precision of DSCM can be improved. The experimental calibration results indicate that the precision of the WTDSCM is higher than normal DSCM.

Paper Details

Date Published: 29 May 2002
PDF: 4 pages
Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); doi: 10.1117/12.468876
Show Author Affiliations
Hong Miao, Univ. of Science and Technology of China (China)
Fei Ge, Univ. of Science and Technology of China (China)
Zhenyu Jiang, Univ. of Science and Technology of China (China)
Xiaoping Wu, Univ. of Science and Technology of China (China)
Jian Lu, Univ. of Technology of Troyes (France)


Published in SPIE Proceedings Vol. 4537:
Third International Conference on Experimental Mechanics

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