Apparatus and methods for smoothing images
US5799111A · kind A · utility
155Cited by
42References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1995 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Sep 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Improved spatial, temporal, and spatio-temporal noise reduction apparatus (10) and also apparatus for noise reduction in conjunction with one or several of the following functions: edge enhancement, spatial interpolation, magnification adjustment by spatial interpolation, and dynamic range compression (DRC). An embodiment of apparatus (10) comprises an image preprocessing unit (12), an estimation gain parameter computation unit (14) and a two-directional processor (16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.