Vision system for distinguishing touching parts
US4876728A · kind A · utility
140Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1987 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Nov 20, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A practical vision system for controlling the positioning of a robot arm recognizes and locates objects. The vision system processes binary images, but recognizes objects based on boundary features such as lines, arcs, corners and holes instead of "blob features" such as area and best-fit ellipse. Consequently, the vision system can process two common situations not handled by blob analysis: merged blobs due to touching or overlapping parts and incomplete blobs due to low image contrast. The microprocessor-based system is interfaced to the robot system and can recognize up to five parts per second.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.