Adaptive denoising with internal and external patches
US9189834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2013 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Jan 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20182
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In techniques for adaptive denoising with internal and external patches, example image patches taken from example images are grouped into partitions of similar patches, and a partition center patch is determined for each of the partitions. An image denoising technique is applied to image patches of a noisy image to generate modified image patches, and a closest partition center patch to each of the modified image patches is determined. The image patches of the noisy image are then classified as either a common patch or a complex patch of the noisy image, where an image patch is classified based on a distance between the corresponding modified image patch and the closest partition center patch. A denoising operator can be applied to an image patch based on the classification, such as applying respective denoising operators to denoise the image patches that are classified as the common patches of the noisy image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.