Invariant features for computer vision
US8878906B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2012 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Dec 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Technology is described for determining and using invariant features for computer vision. A local orientation may be determined for each depth pixel in a subset of the depth pixels in a depth map. The local orientation may an in-plane orientation, an out-out-plane orientation or both. A local coordinate system is determined for each of the depth pixels in the subset based on the local orientation of the corresponding depth pixel. A feature region is defined relative to the local coordinate system for each of the depth pixels in the subset. The feature region for each of the depth pixels in the subset is transformed from the local coordinate system to an image coordinate system of the depth map. The transformed feature regions are used to process the depth map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.