System and method for reducing ringing artifacts in images
US7551792B2 · kind B2 · utility
11Cited by
10References
9Claims
0Family size
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Key dates
| Filing date | Apr 27, 2004 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Oct 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method reduces artifacts in an input image. A variance image is generated from the input image. The input image is partitioned into a plurality of blocks of pixels. A set of classifications is defined. The set of classifications includes smooth, texture, and edge. A particular classification is assigned to each block of pixels of the input image according to the variance image, to generate smooth blocks, texture blocks, and edge blocks. A fuzzy filter is applied to each pixel of only each edge block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.