Robust image alignment using block sums
US8200020B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2011 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Nov 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/751
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computing device may select a source tile from a source image. From the source tile, the computing device may select a first rectangular feature and a second rectangular feature. Based on the first and second rectangular features, the computing device may calculate a source feature vector. The computing device may also select a search area of a target image, and a target tile within the within the search area. Based on the target tile, the computing device may calculate a target feature vector. The computing device may determine that a difference between the source feature vector and the target feature vector is below an error threshold, and based on this determination, further determine a mapping between the source image and the target image. The computing device may then apply the mapping to the source image to produce a transformed source image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.