Position measurement device and position measurement method
US10977825B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 30, 2018 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Feb 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30244
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
[Problem] To enable three-dimensional measurement with good precision.[Solution] When three-dimensional measurement is to be performed with good precision using SLAM or the like, images of marks M1, M2, M3, M4 must be captured from various directions by a single-lens camera. In the present invention, directions of imaging by a camera are displayed as sectors C1, C2, C3, C4. For example, it is understood that whereas sectors C1 and C4 have a large central angle and imaging therein is performed from a wide range of directions, sectors C2 and C3 have a small central angle and imaging therein is performed from a narrow range of directions. A photographer seeing such a display can perform additional imaging, and images can therefore be obtained from a wide range of directions, and three-dimensional measurement can be performed with good precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.