Feature-free photogrammetric 3D imaging with cameras under unconstrained motion
US12354237B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 10, 2021 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Nov 13, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20221
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of mesoscopic photogrammetry can be carried out using a set of images captured from a camera on a mobile computing device. Upon receiving the set of images, the method generates a composite image, which can include applying homographic rectification to warp all images of the set of images onto a common plane; applying a rectification model to undo perspective distortion in each image of the set of images; and applying an undistortion model for adjusting for camera imperfections of a camera that captured each image of the set of images. A height map is generated co-registered with the composite image, for example, by using an untrained CNN whose weights/parameters are optimized in order to optimize the height map. The height map and the composite image can be output for display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.