Augmented reality navigation for repeat photography and difference extraction
US8803992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2010 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Mar 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T19/006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for repeat photography and difference extraction that help users take pictures from the same position and camera angle as earlier photos. The system automatically extracts differences between the photos. Camera poses are estimated and then indicators are rendered to show the desired camera angle, which guide the user to the same camera angle for repeat photography. Using 3D rendering techniques, photos are virtually projected onto a 3D model to adjust them and improve the match between the photos, and the difference between the two photos are detected and highlighted. Highlighting the detected differences helps users to notice the differences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.