Surveying instrument for and surveying method of surveying reference points
US11940262B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2019 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Jul 16, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C3/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A camera monitors positions on an external object having a beacon (1(i), i=1, 2, . . . , I; 130; 430) attached to it. The apparatus has at least one image sensor (120; 321, 322; 420; 520), an imaging optical element (101) for projecting light on the image sensor (120), and a processing unit (9). The imaging optical element (101) may be non-refractive and receives a light beam (5(i); 131) transmitted from the beacon (1(i); 130; 430) and transfers the light beam (5(i); 131) to the image sensor (120; 321, 322; 420; 520). The image sensor (120; 321, 322; 420; 520) forms image data based on the received light beam (5(i); 131) and background light. The processing unit (9) processes the image data such that it filters image data components relating to the background light and renders image data components relating to the light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.