SIGNAL IMAGE EXTRACTION
First Claim
Patent Images
1. A method of eliminating background noise from a system for authenticating security markers comprising:
- capturing an image of a background of the security marker;
illuminating the security marker;
capturing a plurality of images of the optical response of the security marker;
averaging the plurality of optical response images;
smoothing the background image; and
subtracting the smoothed background image from the average of the plurality of optical response images.
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Abstract
A method of eliminating background noise from a system for authenticating security markers includes capturing an image of a background of the security marker; illuminating the security marker; capturing a plurality of images of the optical response of the security marker; averaging the plurality of optical response images; smoothing the background image; and subtracting the smoothed background image from the average of the plurality of optical response images.
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Citations
7 Claims
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1. A method of eliminating background noise from a system for authenticating security markers comprising:
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capturing an image of a background of the security marker; illuminating the security marker; capturing a plurality of images of the optical response of the security marker; averaging the plurality of optical response images; smoothing the background image; and subtracting 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. A method of eliminating background noise from a system for authenticating security markers comprising:
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capturing a plurality of images of a background of the security marker; averaging the background images; illuminating the security marker; capturing a plurality images of the optical response; averaging the plurality of optical response images; smoothing the averaged background image; and subtracting the smoothed background image from the average of the plurality of optical response images.
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Specification