Apparatus for eliminating background noise
First Claim
Patent Images
1. An apparatus for eliminating background noise from a security marker authenticating system comprising:
- a sensor which captures an image of a background with a security marker;
a light source illuminating the security marker;
wherein the sensor captures a plurality images of an optical response of the security marker;
a computer which averages the plurality of optical response images;
wherein the computer smoothes the background image; and
wherein the computer subtracts the smoothed background image from the average of the plurality of optical response images.
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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.
26 Citations
7 Claims
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1. An apparatus for eliminating background noise from a security marker authenticating system comprising:
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a sensor which captures an image of a background with a security marker; a light source illuminating the security marker; wherein the sensor captures a plurality images of an optical response of the security marker; a computer which averages the plurality of optical response images; wherein the computer smoothes the background image; and wherein the computer subtracts the smoothed background image from the average of the plurality of optical response images. - View Dependent Claims (2, 3, 4, 5, 7)
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6. An apparatus for eliminating background noise from a security marker authenticating system comprising:
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a sensor which captures a plurality of image of a background with a security marker; a computer which averages the background images; a first light source illuminating the security marker; wherein the sensor captures a plurality images of the optical response of the security marker; wherein the computer averages the plurality of optical response images; wherein the computer smoothes the averaged background image; and wherein the computer subtracts the smoothed background image from the average of the plurality of optical response images.
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Specification