System and method for three dimensional change detection and measurement of a scene using change analysis
US7391899B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | May 1, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/39
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method (100) comprises steps of: receiving a first digital model (102) of a first three-dimensional scene comprising at least one object; receiving a second digital model (112) of a second three-dimensional scene comprising at least one object; and performing a change analysis (102) on the first and second digital models to provide a difference indication representing a difference between the first and second models. In one embodiment a mean square error operation (110) is performed on the first and second digital models to provide a value indicating the difference between the digital models. In another embodiment, a conflation operation is performed on the difference model provided by the change analysis (120) and an object level change database (124) is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.