Image processing apparatus
US4956873A · kind A · utility
2Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1988 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Jun 6, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to correct the swathe related banding effect often seen on swathe-scanned imagers a vertical smoothing function separates out artifact detail from the idealized image and derives, from this, proportional corrections for each channel within a swathe. In cases where the artifact varies from swathe to swathe a second algorithm is used to obtain correction values for each line of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.