System and Method for Generating and Verifying a Self-Authenticating Document
First Claim
1. A method for verifying a self-authenticating document, comprising:
- (a) upon a request for verification of the document, extracting a characteristic digital data “
CDD”
from the document;
(b) obtaining an image of at least a predetermined portion of the document;
(c) dividing the image into a predetermined number of pixel groups, each pixel group including a plurality of pixels;
(d) determining pixel characteristic data for each pixel;
(e) determining a pixel group classification data for each pixel group as a function of the pixel characteristics data of at least one pixel in the pixel group;
(f) generating a further CDD for the image as a function of the pixel group classification data and a location of the corresponding pixel group in the image; and
(g) verifying the document if the CDD is substantially identical to the further CDD.
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Accused Products
Abstract
Described are a system and method for verifying a self-authenticating document. First, upon a request for verification of the document, a characteristic digital data “CDD” is extracted from the document. An image of at least a predetermined portion of the document is obtained. The image is divided into a predetermined number of pixel groups and each pixel group includes a plurality of pixels. Pixel characteristic data is determined for each pixel. A pixel group classification data is determined for each pixel group as a function of the pixel characteristics data of at least one pixel in the pixel group. A further CDD for the image is generated as a function of the pixel group classification data and a location of the corresponding pixel group in the image. The document is verified if the CDD is substantially identical to the further CDD.
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Citations
17 Claims
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1. A method for verifying a self-authenticating document, comprising:
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(a) upon a request for verification of the document, extracting a characteristic digital data “
CDD”
from the document;
(b) obtaining an image of at least a predetermined portion of the document;
(c) dividing the image into a predetermined number of pixel groups, each pixel group including a plurality of pixels;
(d) determining pixel characteristic data for each pixel;
(e) determining a pixel group classification data for each pixel group as a function of the pixel characteristics data of at least one pixel in the pixel group;
(f) generating a further CDD for the image as a function of the pixel group classification data and a location of the corresponding pixel group in the image; and
(g) verifying the document if the CDD is substantially identical to the further CDD. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for verifying a self-authenticating document, comprising:
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a first arrangement including a processor;
a digital scanner; and
an input device, wherein, upon a request for verification of the document, the input device extracts from the document a characteristic digital data “
CDD”
for the image, the first arrangement obtaining an image of at least a predetermined portion of the document using the digital scanner, the processor dividing the image into a predetermined number of pixel groups, each pixel group including a plurality of pixels, the processor determining pixel characteristic data for each pixel, the processor determining a pixel group classification data for each pixel group as a function of the pixel characteristics data of at least one pixel in the pixel group, the processor generating a further CDD for the image as a function of the pixel group classification data and a location of the corresponding pixel group in the image, the first arrangement verifying the document if the CDD is substantially identical to the further CDD. - View Dependent Claims (14, 15)
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17. A system for verifying a self-authenticating document, comprising:
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a first means including a processing means;
a scanning means; and
an input means, wherein, upon a request for verification of the document, the input means extracts from the document a characteristic digital data “
CDD”
for the image, the first means obtaining an image of at least a predetermined portion of the document using the scanning, the processing means dividing the image into a predetermined number of pixel groups, each pixel group including a plurality of pixels, the processing determining (a) pixel characteristic data for each pixel and (b) a pixel group classification data for each pixel group as a function of the pixel characteristics data of at least one pixel in the pixel group, the processing means generating a further CDD for the image as a function of the pixel group classification data and a location of the corresponding pixel group in the image, the first means verifying the document if the CDD is substantially identical to the further CDD. - View Dependent Claims (16)
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Specification