Process and apparatus for estimating the movement of a moving object
US5173945A · kind A · utility
16Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1990 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Dec 28, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/7864
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and apparatus are provided for estimating the movement of a moving object relative to a reference object. A symbol is formed on the moving object, the symbol having a rectilinear contour with at least two parallel straight lines. The symbol is observed from the reference object and the movement is determined by means of successive projections along two axes having a relative rotary movement with respect to the recorded image of the symbol. The rotary motion is preferably at such a rate that it does not interfere with obtaining images of the straight lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.