Textured digital elevation model generation
US10157497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2017 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Apr 21, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
For textured digital elevation model generation, a method projects swath point projection coordinates of each lidar point of texel swaths into a corresponding texel swath with normalized projection coordinates. Each texel swath includes lidar points, an optical image, and swath output projection point coordinates of the lidar points into the optical image. The method generates a projection matrix including lidar point data for each lidar point of each texel swath. The method calculates enhanced lidar coordinates for each lidar point as a function of minimizing misregistration errors. In addition, the method creates enhanced output pixel coordinates for each image pixel based on the enhanced lidar coordinates for the lidar points and the associated output pixel coordinates. The method generates a textured digital elevation model based on the enhanced output pixel coordinates for each image pixel, and the enhanced lidar coordinates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.