Inspecting articles
US4637054A · kind A · utility
17Cited by
12References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1984 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30164
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The condition of an article e.g. a multihead tool array is compared after having been subjected to some operation with its previous condition e.g. before and after a drilling or other operation of the tool array by forming an image, e.g. a video image, of the article before the operation and automatically comparing it with a second such image formed after the operation. Known image enhancement techniques can be used, and statistical techniques used in data processing equipment to detect significant differences between the images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.