Adaptive lens shading correction
US8228406B2 · kind B2 · utility
27Cited by
47References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2010 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jan 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/843
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and devices for applying lens shading correction to image data captured by an image sensor are provided. In one embodiment, multiple lens shading adaptation functions, each modeled based on the response of a color channel to a reference illuminant, are provided. An image frame from the image data may be analyzed to select a lens shading adaptation function corresponding to a reference illuminant that most closely matches a current illuminant. The selected lens shading function may then be used to adjust a set of lens shading parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.