Machine vision differential measurement system
US4710808A · kind A · utility
22Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Aug 5, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/024
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the present system, the thickness of an object with two surfaces is determined by forming two geometric images on the surfaces in a superimposed relationship. The images are viewed by two video cameras and their relative positions with respect to two corresponding references are determined. These relative positions are used to measure the thickness of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.