Determining scale of three dimensional information
US10192141B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2016 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Nov 22, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This disclosure relates to a method in which points common to two or more of the images that appear to represent the same real world features are identified, and changes in the location of the points between respective images are used to deduce the motion of the camera and to find the position of the real world features in three dimensional space. In order to determine the scale of the three dimensional information, the position of a reference feature, whose actual distance from the camera is known, is found from the images. The reference feature is found by considering only candidate points selected from candidate points falling within a portion of the image corresponding to a part of the field of view of the camera. The scale is determined from the distance between the camera and the reference feature in the image and in real life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.