Systems and methods for descriptor vector computation
US8098938B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2008 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Oct 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/462
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for descriptor vector computation are described herein. An embodiment includes (a) identifying a plurality of regions in the digital image; (b) normalizing the regions using at least a similarity or affine transform such that the normalized regions have the same orientation and size as a pre-determined reference region; (c) generating one or more wavelets using dimensions of the reference region; (d) generating one or more dot products between each of the one or more wavelets, respectively, and the normalized regions; (e) concatenating amplitudes of the one or more dot products to generate a descriptor vector; and (f) outputting a signal corresponding to the descriptor vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.