Noise suppression in low light images
US8417047B2 · kind B2 · utility
3Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2011 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Jun 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/4015
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A low light noise reduction mechanism may perform denoising prior to demosaicing, and may also use parameters determined during the denoising operation for performing demosaicing. The denoising operation may attempt to find several patches of an image that are similar to a first patch, and use a weighted average based on similarity to determine an appropriate value for denoising a raw digital image. The same weighted average and similar patches may be used for demosaicing the same image after the denoising operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.