Apparatus and method for improving image quality in image sensor
US7639292B2 · kind B2 · utility
5Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2005 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Aug 1, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and a method for improving image quality in an image sensor, where a black level of a photographed image is calibrated and luminance of an image signal is expanded within the allowable range of luminance through knee correction for the image signal in which the black level is calibrated. Interpolation for restoring a dead pixel may be achieved before gamma correction for image signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.