Pseudo-DC restore application to staring array detectors
US4400729A · kind A · utility
9Cited by
2References
1Claims
0Family size
Inventor
Key dates
| Filing date | Dec 3, 1980 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Dec 3, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adjustment signal is derived for each element in a detector array which depends on the median of the differences of image brightness between that particular detector and all its neighboring detectors. The adjustment signal is derived by integrated circuit techniques on the detector itself. The negative feedback of these adjustment signals to the uncorrected detector outputs will delete the salt-and-pepper noise of the staring array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.