Method and apparatus for reconstruction of three-dimensional surfaces from interference fringes
US4525858A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1983 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Jan 3, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fully automatic method for rapidly and unambiguously interpreting fringe patterns, including those having branched fringes, is provided. The information from the fringe patterns processed by the method of the invention can be used in testing, surface characterization and inspection applications. Further processing of the information from the two-dimensional fringe patterns yields information from which the three-dimensional surface can be quantitatively reconstructed for further use such as for display, as in microscopy, or as input for computer-aided design and computer-aided manufacture. Apparatus for conducting the method of the invention is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.