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Method and system for controlling encoded image production using image signatures

An image signature, encoded image technology, applied in the direction of program control, transmission system, digital transmission system using record carriers and instructions, and can solve problems such as increasing the tampering of encoded images

Inactive Publication Date: 2007-01-17
GROPHIC SECURITY SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, doing so raises the concern that the encoded image itself could be tampered with or generated by an unauthorized user to counterfeit a product or alter a document
Another concern is that an authorized user may use encoding software for unauthorized purposes, such as protecting printed material that the user is not permitted to encode

Method used

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  • Method and system for controlling encoded image production using image signatures
  • Method and system for controlling encoded image production using image signatures
  • Method and system for controlling encoded image production using image signatures

Examples

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Embodiment Construction

[0020] Embodiments of the invention provide methods of controlling the generation, transmission and use of coded pictures. As described above, such coded images are used to hinder or prevent the forgery and misuse of documents and other materials to which the coded images are applied.

[0021] As used herein, the term "encoded image" (or "optical encoded image") refers to a rasterized, scrambled, or otherwise processed variant of one or more authentication images that, when embedded in a document, or other printed context or source image, cannot be distinguished from underlying document material or other background or source images without the use of decoding equipment. The encoded image may be generated from the authentication image using a specific set of properties, wherein the properties include encoding parameters corresponding to specific properties of the decoding device. When the coded image is printed, the authentication image will be revealed when the decoding devic...

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Abstract

An automated method for authorizing and controlling the production of optically encoded images is provided. The method comprises receiving from a user data processor a request for authorization to produce an encoded image. The authorization request includes user-supplied data comprising at least one authentication image file. The method further comprises determining whether the user is authorized to produce an encoded image using the user-supplied data. Responsive to a determination that the user is authorized to produce an encoded image using the user-supplied data, an authentication image signature is generated from the at least one authentication image file using an image signature algorithm and a positive authorization response is returned to the user data processor. The positive authorization response includes the authentication image signature.

Description

[0001] related application [0002] This application claims priority to US Provisional Application No. 60 / 531,810, filed December 22, 2003, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates generally to the protection against counterfeiting of printed and digital documents, packaging and other printed materials, and more particularly to the secure generation of encoded images used in anti-counterfeiting measures. Background technique [0004] Forgery and alteration of valuable documents and black market trade in counterfeits are serious problems with increasing regularity in today's world. Every year, millions of dollars are lost due to the fraudulent use of inauthentic documents and branded products. The increasing sophistication of optical scanners, copiers and other equipment used to reproduce products is increasing the ability of counterfeiters to produce fraudulent documents and other imitations of suffici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00G06F9/04G06T1/00H04L9/32
Inventor 阿尔弗烈德·V·阿拉西亚阿尔弗烈德·J·阿拉西亚托马斯·C·阿拉西亚斯洛博丹·茨弗特科维奇
Owner GROPHIC SECURITY SYST CORP
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