Partial lens shading compensation method
US9392180B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2012 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Mar 2, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for partial lens shading compensation are provided. An image area is divided, from the inside towards the outside of the image area, into several partial areas centered on an optical center of the image. When a target pixel is identified as being located in one of the partial areas, a corresponding compensation gain is determined according to the position of the target pixel with reference to the optical center. Another compensation gain is determined according to the position of the target pixel with reference to the optical center. A mixed compensation value is determined according to the compensation gains, so as to compensate the target pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.