Method for fixed-rotation and rotation-independent image correlation
US8478049B2 · kind B2 · utility
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25Claims
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Key dates
| Filing date | Apr 29, 2010 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Jun 17, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/757
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circlet is defined as a compact angle representation expressing, at a given pixel comprised in the first image, the direction of change of pixel intensity. A method of locating a feature of interest includes the steps of: acquiring a first image of a feature of interest to a user; generating a learned circlet image from the first image; saving one or more sets of learned circlets corresponding to one or more selected probes; acquiring a second image of the feature of interest; generating a target circlet image from the second image; and correlating the learned circlet image and the target circlet image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.