Variable distortion correction for panoramic images
US12190485B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Feb 9, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In panoramic video captured by a fisheye camera (e.g., for use in the remote operation of mobile equipment), there is a trade-off between the field of view and the level of distortion correction. In particular, to avoid the video from be disorienting, distortion correction is required. However, distortion correction applied to a very wide field of view results in an unnatural appearance of objects in edge regions, such that the image frames of the video must be cropped. A method is disclosed that varies the level of distortion correction that is applied to pixels in each image frame based on a position of those pixels in the image frame, such that less distortion correction is applied to pixels closer to edges of the image frame. This enables a very wild field of view, while preventing the unnatural appearance of objects near the edges of the image frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.