Apparatus and method of correcting for dark current in a solid state image sensor
US7064785B2 · kind B2 · utility
8Cited by
32References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2002 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Nov 3, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method of correcting for dark current in a solid state image sensor, include capturing an image with the image sensor to produce a digital image having pixel values; correcting the pixel values with a dark level correction value; employing a control system to adjust the dark level correction value to drive the number of pixels having values lower than a predetermined value chosen to represent dark scene content to a predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.