Sub-pixel image registration
US7787655B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2003 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Dec 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An approach to sub-pixel image registration involves determining parameters of an objective function from pixel values of a template image and of a target image. This objective function is defined on a bounded continuous domain of relative displacements of the template image and the target image, which corresponds to sub-pixel registration locations. This objective function is directly optimized without necessarily evaluating spatially interpolated values of either the template image or the target image to achieve a global optimum of the objective function in the bounded domain that provides the sub-pixel registration location. The approach can be used for tracking a template in a sequence of video frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.