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Digital image correlation for whole field out-of-plane displacement measurement using a single camera
- Source :
-
Optics Communications . Jul2005, Issue 1-3, p23-36. 14p. - Publication Year :
- 2005
-
Abstract
- Abstract: Digital image correlation (DIC) using a single camera has been widely used for in-plane displacement and strain measurement. However, in order to obtain out-of-plane displacement, one should employ stereo vision systems which enable multiple directions detection. In this paper, we develop a simple method for whole field out-of-plane displacement measurement using only one camera. The proposed method employs digital image correlation to calculate an apparent in-plane displacement field which is introduced by magnification change due to an unknown out-of-plane displacement. The unknown out-of-plane displacement is subsequently determined from a pinhole camera model and the apparent in-plane displacement. Experiments conducted on a plate, a cantilever beam and a surface with height variation demonstrate that the method is simple, accurate and suitable for measurement of non-structured objects. [Copyright &y& Elsevier]
- Subjects :
- *IMAGE analysis
*IMAGING systems
*CAMERAS
*PHOTOGRAPHIC equipment
Subjects
Details
- Language :
- English
- ISSN :
- 00304018
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Optics Communications
- Publication Type :
- Academic Journal
- Accession number :
- 17920068
- Full Text :
- https://doi.org/10.1016/j.optcom.2005.02.070