Lens distortion method for broadcast video
US9667887B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2010 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Sep 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus, and computer program product are described to improve a lens distortion curve which roughly approximates distortion caused by a camera lens to capture an event onto video. The present invention selects a generic lens distortion curve that roughly approximates the distortion caused by the camera lens while capturing the event onto the video. The video as well as information from the generic lens distortion curve is used to generate a camera model. This camera model is used to integrate virtual insertions into the video. If the camera model is sufficiently accurate to present a realistic appearance of the virtual insertions to the remote viewer, this camera model is then used to integrate more virtual insertions into the video. However, if the camera model is not sufficiently accurate, an iterative process is employed to refine this camera model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.