Method of calibrating an image signal processor to overcome lens effects
US9414052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2014 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Jun 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for correcting image data. Embodiments of the present invention provide calibration and image correction to overcome various lens effects including lens shading and lens imperfections. In one embodiment, the correction of image data is performed via utilization of a spline surface (e.g., Bezier surface). The use of spline surfaces facilitates efficient hardware implementation. The image correction may be performed on a per channel and illumination type basis. In another embodiment, the present invention provides a method for determine a spline surface to be used for calibrating an image signal processor to be used in correcting image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.