Apparatus and method for estimating signal-dependent noise in a camera module
US8106971B2 · kind B2 · utility
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Key dates
| Filing date | Jan 16, 2009 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Aug 15, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20064
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for estimating signal-dependent noise in a camera module are provided, in which an image is decomposed into high frequency components and low frequency components, a variance of noise in the image is estimated using the low frequency components, noise is eliminated from the high frequency components using the estimated noise variance, and the image is recovered using the noise-eliminated high frequency components and the low frequency components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.