Method and apparatus for reducing noise of image sensor
US8004586B2 · kind B2 · utility
4Cited by
2References
35Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 19, 2006 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Jul 10, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/409
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and a method for reducing noise from an image sensor are provided. The apparatus includes a noise-estimation unit which estimates a noise level representing an image frame expressed as a component in a color space, a filter-strength-calculation unit which determines filter strength based on the estimated noise level, and a filter-application unit which filters pixels constituting the image frame according to the determined filter strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.