Motion adaptive noise reduction method and system
US6784944B2 · kind B2 · utility
4Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2001 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Oct 5, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system of noise filtering is provided. The pixels of a first filter mask are separated into groups based on luminance . . . The sizes of each group is determined and a largest group is selected. The distance of each group of pixels from the largest group is also calculated. Pixels in groups that are small compared to the largest group and far from the largest group are tagged as noisy. After tagging the noisy pixels, additional filtering can be applied to the pixels of first filter mask without degradation from the tagged pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.