Semi-automatic extraction of linear features from image data
US7653218B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2007 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Jul 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/13
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for extracting a linear feature from remotely sensed imagery, including selecting by user interface anchor points for the linear feature, the anchor points being identified with a geographic location; using image-based logic to automatically calculate a vector set associated with the anchor points, the vector set comprising a path associated with the linear feature; automatically attributing a material type to the path; automatically attributing a geometry to the path; selecting by user interface anchor points for a successive linear feature; using image-based logic to calculate a successive vector set associated with the anchor points for the successive linear feature, the successive vector set comprising a successive path; using a geometric relationship between the vector set and the successive vector set to automatically adjust the vector set to create an adjusted vector set, the adjusted vector set correcting the path associated with the first linear feature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.