System and method for sub-pixel alignment of digital geographic imagery
US8903137B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2012 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Feb 27, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/7788
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for associating geographic coordinates with one or more points in a digital geographic image, such as a satellite image, aerial image, ground based image, street level image or other suitable geographic image are provided. More particularly, a digital geographic image can be analyzed to identify one or more features that may be suitable as measurement points for collecting measured ground truth data. The one or more features can be described as a mathematical model that defines image coordinates along the feature depicted in the digital geographic image with sub-pixel accuracy. Image coordinates can be assigned to the measurement points with sub-pixel accuracy using the mathematical model. Collected ground truth data can then be associated with the identified image coordinates to allow for the more precise association of geographic coordinate information to points in the digital geographic imagery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.