Method and apparatus for extracting mountain landscape buildings based on high-resolution remote sensing images
US11615615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2021 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Jun 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/194
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method and an apparatus for extracting mountain landscape buildings based on high-resolution remote sensing images. The method comprises: segmenting a remote sensing image, and extracting non-vegetation areas from the remote sensing image by using NDVI; segmenting the non-vegetation areas, and extracting building areas by using NDBI; segmenting the building areas again, and calculating a normalized difference build shadow index NSBI of each patch; calculating NSBI separator of each patch in the non-vegetation areas and setting a separator threshold, and extracting landscape building areas based on the threshold. In the present invention, by introducing a near infrared band in the remote sensing image spectrum, in which there is a significant difference between shadows and non-shadows, the influence of large shadow areas in mountainous shady areas in the remote sensing image on the result of extraction is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.