Denoising of images with nonstationary noise
US9262808B2 · kind B2 · utility
2Cited by
11References
19Claims
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Key dates
| Filing date | Feb 7, 2013 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Jul 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20076
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An input image is denoised by first constructing a pixel-wise noise variance map from the input image. The noise has spatially varying variances. The input image is partitioned into patches using the noise variance map. An intermediate image is determined from the patches. Collaborative filtering is applied to each patch in the intermediate image using the noise variance map to produce filtered patches. Then, the filtered patches are projected to an output image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.