Document processing methods
First Claim
Patent Images
1. In a method of compiling a database useful by an issuer of identity credentials, the method including storing—
- for each of plural issued credentials—
a name of a credentialed person, and an image of such person, an improvement that includes also storing directional albedo information unique to said issued credential.
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Accused Products
Abstract
Directional albedo of a particular article, such as an identity card, is measured and stored. When the article is later presented, it can be confirmed to be the same particular article by re-measuring the albedo function, and checking for correspondence against the earlier-stored data. The re-measuring can be performed through us of a handheld optical device, such as a camera-equipped cell phone. The albedo function can serve as random key data in a variety of cryptographic applications. The function can be changed during the life of the article. A variety of other features are also detailed.
120 Citations
5 Claims
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1. In a method of compiling a database useful by an issuer of identity credentials, the method including storing—
- for each of plural issued credentials—
a name of a credentialed person, and an image of such person, an improvement that includes also storing directional albedo information unique to said issued credential.
- for each of plural issued credentials—
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2. A method comprising the acts:
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capturing image data from an identification document; and by reference to directional albedo information previously known about said document, characterizing a position of said document in at least three dimensions, said characterizing act being performed by a hardware processor configured to perform such act. - View Dependent Claims (3, 4)
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5. A non-transitory computer readable medium containing instructions for configuring a processor programmed thereby to perform acts including:
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receiving image data corresponding to an identification document; and by reference to directional albedo information previously known about said document, characterizing a position of said document in at least three dimensions.
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Specification