Geometric correction of rough wireframe models derived from photographs
US9911228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2011 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Dec 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Geometric correction of rough wireframe models derived from photographs may include rectification of either a 2D or 3D original wireframe model of a roof structure, derivation of metadata from the original wireframe, in-plane normalization of the wireframe, extrusion into a “rough” 3D wireframe based on the normalized wireframe, and correction of the “rough” 3D wireframe. The correction and normalization may be an iterative process based on initial pitch values, metadata derived from the original or corrected wireframe models and defined constraints regarding relationships between roof portions or segments. The iterative process may repeat adjusting the wireframe model until the adjusting converges to a stable state according to the various defined constraints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.