Method of positioning by using image
US7176974B2 · kind B2 · utility
0Cited by
3References
7Claims
0Family size
Inventor
Key dates
| Filing date | Jan 21, 2003 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Mar 31, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of positioning by using image uses an image-collecting device with a known angle of view to gain a digital image. A pixel matrix of the digital image is defined as the known angle of view and a gap between every two adjacent pixels of each horizontal line and each longitudinal line is an equally divided angle of the known angle. A displaying objective is shown on an image sensor and has a datum point of computing of a position angle. A camera lens has a principal axis directing to the datum point such that a calculating unit can compute an angle formed between the displaying objective and the principal axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.