Process for length measurement by means of a photosensitive network camera
US4939378A · kind A · utility
5Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Feb 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Process for measuring lengths by means of a photosensitive network camera, characterized in that the process consists in integrating the video signals (V) over all or part of each of the scan lines (BI); following the evolution of the integral (I) during successive scans (BI) in the vicinity of the edges (9); and precisely locating the points in the integral curve (I) corresponding to the edges (9) in the image (8) of the object (1) to be measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.