Creation of a 3D city model from oblique imaging and lidar data
US11222204B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 23, 2017 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Nov 1, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30184
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and a hybrid 3D-imaging device for surveying of a city scape for creation of a 3D city model. According to the invention, lidar data is acquired simultaneously with the acquisition of imaging data for stereoscopic imaging, i.e. acquisition of imaging and lidar data in one go during the same measuring process. The lidar data is combined with the imaging data for generating a 3D point cloud for extraction of a 3D city model, wherein the lidar data is used for compensating and addressing particular problem areas of generic stereoscopic image processing, in particular areas with unfavourable lighting conditions and areas where the accuracy and efficiency of stereoscopic point matching and point extraction is strongly reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.