Perspective improvement for image and video applications
US7742624B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2006 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Mar 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/247
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for reducing distance-based distortion in a camera image of an object, where the distanced-based distortion is due to differences in distance from the camera to different parts of the object. In one approach, the distortion is reduced by estimating distances to different parts of the object and then generating a reprojected image of the object dependent upon the estimated distances and upon a virtual viewpoint that is more distant than the camera from the object. In a further approach, the image is warped such that points in the image match corresponding points in one or more stored templates. In a still further approach, if excessive distortion is present in the image, the camera zoom is increased and a magnified image is displayed, prompting a person to move farther from the camera thereby reducing the distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.