Sand dune extraction method based on fusion of positive-negative terrains and light shading
US12190442B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2024 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jul 3, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/05
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sand dune extraction method based on fusion of positive-negative terrains and light shading includes: obtaining an original digital elevation model of a study region; using a neighborhood analysis method to process the original digital elevation model of the study region, thereby extracting a positive terrain region and a negative terrain region of the study region; using a lighting shading method to perform six directional lighting simulation calculations on each pixel of the original digital elevation model of the study region to obtain a lighting shading map, and extracting a lighting region and a shadow region of the study region from the lighting shading map; using an embedding method to fuse the positive terrain region and the negative terrain region with the lighting region and the shadow region. The sand dune extraction method is a method for remote sensing monitoring and governance of desertification regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.