Method of analyzing fringe image having separate regions
US6859566B2 · kind B2 · utility
2Cited by
10References
10Claims
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Key dates
| Filing date | Dec 3, 2001 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Sep 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/521
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method of analyzing a fringe image, a mask is provided to a gap for separating a plurality of fringe image regions from each other, a virtual fringe distribution is once rendered to the mask region so as to yield a single fringe image, a fringe analysis is carried out thereafter, and then data of the mask region is deleted, so that the separated independent regions have a phase relationship therebetween, whereby information of the object to be observed is obtained at a high speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.