Visual image noise eliminating system
US4298895A · kind A · utility
22Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1979 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Aug 30, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4097
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for eliminating noise in a digitally recorded visual image wherein the proportion of picture elements in an area surrounding an objective area having a first visual level or component is determined and the objective area concluded as having the same visual level or component when the proportion is above a predetermined value. In one embodiment, both picture elements in the surrounding and objective areas are counted to determine the proportion while in another only those picture elements in the surrounding area are counted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.