Controlling image signals in an imaging apparatus
US4799106A · kind A · utility
41Cited by
19References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1986 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Aug 19, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Thermal imaging apparatus is provided with a comparator and a digital counter for counting the number of pixels in the scene within certain defined brightness bands. Utilizing this data, a microprocessor controls gain, level, gamma correction and integration for noise reduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.