Global and local statistics controlled noise reduction system
US7317842B2 · kind B2 · utility
7Cited by
6References
16Claims
0Family size
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Key dates
| Filing date | Oct 30, 2003 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Sep 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A global and local statistics controlled noise reduction system in which the video image noise reduction processing is effectively adaptive to both image local structure and global noise level. A noise estimation method provides reliable global noise statistics to the noise reduction system. The noise reduction system dynamically/adaptively configures a local filter for processing each image pixel, and processes the pixel with that local filter. The filtering process of the noise reduction system is controlled by both global and local image statistics that are also computed by the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.