Multiple-scale digital image correlation pattern and measurement
US11100657B2 · kind B2 · utility
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9References
12Claims
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Key dates
| Filing date | May 11, 2016 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Apr 11, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0647
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for digital image correlation. A camera system is used to obtain larger scale images of a larger scale dot pattern on a surface of a workpiece and smaller scale images of a smaller scale dot pattern on the surface of the same workpiece. The smaller scale dot pattern forms a larger dot in the larger scale dot pattern in the larger scale images. The larger scale images and the smaller scale images may be used to determine a measurement of the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.