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Effects Of Subpixel Image Restoration On Digital Correlation Error Estimates
Abstract
Recently, a method has been developed that uses computer vision to determine the deformations of subsets of an object. Although the method has been used successfully in a variety of applications, to date there has been no critical assessment of the key parameters in the system and their effect on the accuracy of the measured deformations. The present work presents the results of initial studies of this system. The system components are modeled, and a representative intensity pattern is chosen and deformed by known amounts. Then, the effects of varying the various parameters in the model are analyzed numerically. The most significant parameters are found to be (1) the number of quantization levels in the digitization process (i.e., the number of bits in the A/D converter), (2) the ratio of the frequency of the signal to the frequency of the sampling, and (3) the form of the intensity interpolation function.
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Citations
Cited by
Digital image correlation using Newton-Raphson method of partial differential correction
Bruck, H. A., McNeill, S. R., Sutton, M. A., & Peters, W. H. (1989) · Experimental Mechanics · doi:10.1007/bf02321405 · Cited by 1,456
Self-citationAdvances in Two-Dimensional and Three-Dimensional Computer Vision
Sutton, M. A., McNeill, S. R., Helm, J. D., & Chao, Y. J. (2000) · Topics in Applied Physics · doi:10.1007/3-540-48800-6_10 · Cited by 503
Self-citationA review of optical NDT technologies
Zhu, Y.-K., Tian, G.-Y., Lu, R.-S., & Zhang, H. (2011) · Sensors · doi:10.3390/s110807773 · Cited by 228
Metadata
- Authors
- Sutton, M. A., McNeill, S. R., Jang, J., & Babai, M.
- Venue
- Optical Engineering
- Publisher
- SPIE-Intl Soc Optical Eng
- Published
- 1988-10-01
- Volume
- 27
- Issue
- 10
- Pages
- 870-877
- ISSN
- 0091-3286 (ISSN-L)
- OpenAlex
- W2079705023
- Cited by
- 247
- References
- 0
- FWCI
- 2.12
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sutton, M. A., McNeill, S. R., Jang, J., & Babai, M. (1988). Effects Of Subpixel Image Restoration On Digital Correlation Error Estimates. Optical Engineering. https://doi.org/10.1117/12.7976778
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