Lens shading correction device and method in image sensor
US7834925B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2007 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Jan 29, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/134
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a lens shading correction device and method in an image sensor. The device comprises a brightness weight storage unit, an input image divider, and an input image brightness correction unit. The brightness weight storage unit stores a brightness weight for allowing one of representative brightness values to be a representative brightness value of a reference image block having a maximal representative brightness value. The input image divider blocks and divides an input image into input image blocks. The input image brightness correction unit corrects a brightness of the input image by multiplying brightness of input pixels by brightness weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.