System and method for visual recognition
US9576217B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Oct 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/759
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for visual recognition of an object in an electronic image includes extracting unique points of an object to be learned and/or a target object. The unique points are obtained by cross-correlating the image with a structure. Generally, the structure and/or the size of the structure may vary to detect extremum information associated with the learned object and/or target object. An icon corresponding to each of the unique points is extracted. The size of the icon corresponds to the scale of the unique point. After extraction of the various icons, an object becomes a collection of icons. Each of these icons is un-rotated and normalized or resized to a constant size so it can be compared with other icons. One of the unique properties of these icons is their stability over scale and angle. Thus, this invention allows the recognition of an image(s) or object(s) from large number of trained images or objects very quickly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.