Apparatus for eliminating background noise
US8497924B2 · kind B2 · utility
4Cited by
3References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 27, 2011 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Oct 31, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20224
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for eliminating background noise from a security marker authenticating system including a first sensor for capturing an image of a background of the security marker; a light source for illuminating the security marker; the first sensor or a second sensor or both captures a plurality images of the optical response of the security marker; a computer which averages the plurality of optical response images; the computer smoothes the background image; and the computer subtracts the smoothed background image from the average of the plurality of optical response images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.