Denoising images with a color matrix pyramid
US9049334B1 · kind B1 · utility
3Cited by
1References
18Claims
0Family size
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Key dates
| Filing date | Feb 24, 2012 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/84
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for chroma denoising a digital image created in a digital camera includes decomposing the digital image into a plurality of spatial frequency bands. A separate modified color correction matrix is calculated from a color correction matrix associated with the camera for each of the plurality of spatial frequency bands. Each modified color correction matrix is applied to data in its corresponding spatial frequency band to produce color-corrected data in the plurality of spatial frequency bands. The color-corrected data in plurality of spatial frequency bands is combined to produce an output image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.