Method for multi-scale digital elevation model generation based on curvature wavelet transform
US12412337B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2025 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | May 13, 2045 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multi-scale DEM generation method based on curvature wavelet transform is provided. The method includes following steps: obtaining a wavelet basis function and a wavelet decomposition layer number of the curvature wavelet transform, and a DEM related parameter feature information amount and an output resolution; an grid surface curvature of DEM data is acquired, and the grid surface curvature of the DEM data is decomposed and reconstructed based on the wavelet basis function and the wavelet decomposition layer number to obtain a reconstruction matrix; based on the reconstruction matrix, terrain feature points in the DEM data are extracted by taking a feature information amount as a threshold; and based on the terrain feature points in the DEM data, resampling is performed with the output resolution as resolution, so that DEM generation and synthesis are realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.