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Proceedings Paper

A Fast Deformation Analysis Method By Digital Correlation Technique
Author(s): Qiang Fang; Hong Yiao; Yushan Tan; Chungshien Ku
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Paper Abstract

Auto-correlation and cross-correlation methods have been proposed for the detecting of point information in digital speckle pattern photography(DSPP). With the spatial auto-correlation the magnitude and the direction of the deformation can be obtained and with the spatial cross-correlation the deformation vector can be known. The principles of the two methods have been presented and the analytic expressions of the signal have been derived, from which the measurable minimum and maximum have been predicted. The two methods have been implemented on an IBM-PC/XT based image processing system in the author's work and the experiment results have been shown in this paper.

Paper Details

Date Published: 16 January 1989
PDF: 5 pages
Proc. SPIE 0954, Optical Testing and Metrology II, (16 January 1989); doi: 10.1117/12.947607
Show Author Affiliations
Qiang Fang, Xi'an Jiaotong University (China)
Hong Yiao, Xi'an Jiaotong University (China)
Yushan Tan, Xi'an Jiaotong University (China)
Chungshien Ku, Xi'an Jiaotong University (China)


Published in SPIE Proceedings Vol. 0954:
Optical Testing and Metrology II
Chander Prakash Grover, Editor(s)

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