Method and system for determining camera parameters from a long range gradient based on alignment differences in non-point image landmarks
US9883163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2013 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Feb 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method improves a camera calibration. The method includes receiving a camera image, a planar template pattern, a 3D geometry of a surface on which the planar template pattern is embedded, and a set of parameter values. The method includes rendering the planar template pattern into a camera perspective based on the parameter values to generate a warped template image. The method includes generating an error image including at least one non-zero difference between the camera image and the warped template image. The method includes adjusting the parameter values to reduce an error between the camera image and the warped template image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.