Abstract
Digital Image Correlation (DIC), as a technique based on image processing, has been intensively used for displacement measurement. The setup of DIC analysis starting condition is crucial to the validity of the results. In this paper, the influence of correlation window size (corrsize), one of the parameters that need to be chosen by users for setup, is studied. The results show that DIC is reliable as long as the corrsize is between a lower bound (corssizemin) and an upper bound (corssizemax). The reason why DIC returns high error factor when beyond corssizemax is related to image boundary effect, which is demonstrated by an equation serving as a criterion for corrsize choice. The study in this paper is particularly vital in cases where the Region of Interest (ROI) is close to the image and the real displacement is large.
Original language | English |
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Title of host publication | Proceedings of the World Congress on Engineering 2017, WCE 2017 |
Editors | David WL Hukins, A. M. Korsunsky, Len Gelman, S. I. Ao, Andrew Hunter |
Publisher | Newswood Limited |
Pages | 456-459 |
Number of pages | 4 |
Volume | 2229 |
ISBN (Electronic) | 9789881404749 |
Publication status | Published - 7 Jul 2017 |
Event | 2017 World Congress on Engineering, WCE 2017 - London, UK United Kingdom Duration: 5 Jul 2017 → 7 Jul 2017 |
Publication series
Name | Lecture Notes in Engineering and Computer Science: Proceedings |
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Publisher | Newswood Limited |
ISSN (Print) | 2078-0958 |
ISSN (Electronic) | 2078-0966 |
Conference
Conference | 2017 World Congress on Engineering, WCE 2017 |
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Country/Territory | UK United Kingdom |
City | London |
Period | 5/07/17 → 7/07/17 |
Funding
This work was partially supported by EPSRC via grants EP/I020691, as well as by EU FP7 project iSTRESS (604646), EP/H003215 and EP/G004676.
Keywords
- Correlation window size
- Digital image correlation
- Image boundary effect
- Upper and lower bounds
ASJC Scopus subject areas
- Computer Science (miscellaneous)