Landmark identification from point cloud generated from geographic imagery data
US9625612B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2013 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Jan 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16Z99/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods for identifying prominent landmarks in a geographic area are provided. More particularly, geographic imagery data, such as panoramic images captured by a camera from a perspective at or near ground level, can be analyzed to identify landmarks depicted in the geographic imagery data. For instance, structure-from-motion techniques can be used to generate a point cloud of tracked features that are located a threshold distance away from one or more camera perspectives associated with the geographic imagery data. Landmarks that are visible from multiple camera perspectives and that are visible from greater distances relative to one or more camera perspectives can be identified as prominent landmarks in a geographic area. A geographic information system can use the prominent landmarks for a variety of purposes, such as for use in providing travel directions, for rendering landmarks in an emphasized style, and/or for constructing/displaying a three-dimensional model of the landmark.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.