Automatic extraction of built-up footprints from high resolution overhead imagery through manipulation of alpha-tree data structures
US8682079B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2013 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Nov 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for automatically extracting or isolating structures or areas of interest (e.g., built-up structures such as buildings, houses, shelters, tents; agricultural areas; etc.) from HR/VHR overhead imagery data by way of making as little as a single pass through a hierarchical data structure of input image components (where pixels are grouped into components based on any appropriate definition or measure of dissimilarity between adjacent pixels of the input image) to identify candidate components (e.g., possible structures of interest) free of necessarily having to re-iterate the same operator configured with different threshold parameters for a plurality of values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.