Reducing noise in digital images
US7813586B2 · kind B2 · utility
8Cited by
61References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2006 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | May 31, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A target digital image is received from an image sensor. The image is contaminated by noise of unknown magnitude that is represented by a reference digital image. A process is applied that uses statistical analysis of the target digital image and of the reference digital image to estimate a magnitude of the noise for at least some pixels of the target digital image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.