Image recognition
US8860788B2 · kind B2 · utility
1Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2009 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Feb 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A subject (1) is illuminated by a light source (2) and observed by a pair of cameras (3). The outputs of the cameras (3) are input to an image processor (4), operated under the control of a controller (5), which also controls operation of the light source (2). The light source (2) transmits radiation in a frequency range that is limited substantially to a region of increased opacity in the atmospheric transmission spectrum. This may enable the illumination to be quite clearly discriminated, even at relatively great distances and in bright daylight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.