Systems and methods for selecting interest point descriptors for object recognition
US8868571B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Sep 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F18/2113
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for selecting interest point descriptors for object recognition. In an embodiment, the present invention estimates performance of local descriptors by (1) receiving a local descriptor relating to an object in a first image; (2) identifying one or more nearest neighbor descriptors relating to one or more images different from the first image, the nearest neighbor descriptors comprising nearest neighbors of the local descriptor; (3) calculating a quality score for the local descriptor based on the number of nearest neighbor descriptors that relate to images showing the object; and (4) determining, on the basis of the quality score, if the local descriptor is effective in identifying the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.