Image-registration method, medium, and apparatus
US8300985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2008 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Aug 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20076
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image-registration method, medium, and apparatus obtaining first and second images, generating first and second image pyramids based on the first and second images, respectively, by performing sub-sampling which reduces the length and width of each of the first and second images by half, and determining one of five directions as an optimal movement direction for a current level of the first and second image pyramids based on two images belonging to a corresponding level, updating a motion vector for the current level based on the optimal movement direction for the current level and updating a first image belonging to a level directly below the current level based on the updated motion vector for the current level, wherein the updating comprises updating a motion vector for each of a plurality of levels of the first and second image pyramids in an order from an uppermost level to a lowermost level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.