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Method and device for identifying document printing plate

A document and printing plate technology, applied in the field of identifying document printing plate, can solve the problem of not being able to change the message

Active Publication Date: 2014-05-14
ADVANCED TRACK & TRACE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the printing types most commonly used for AMSM and digital captchas are static, the mark and the message contained cannot be changed with each printing

Method used

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  • Method and device for identifying document printing plate
  • Method and device for identifying document printing plate
  • Method and device for identifying document printing plate

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Experimental program
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Embodiment Construction

[0083] Before giving details of various specific embodiments of the invention, definitions that will be used in the specification are given below.

[0084]"Message Matrix": This is a machine-readable physical image of the message, usually affixed to a solid surface (as opposed to watermarks or digital watermarks, which alter the pixel values ​​of the design to be printed). Information matrix definitions include, for example, 2D barcodes, 1D barcodes and other less intrusive ways of representing information such as "Dataglyphs";

[0085] "document": this is an arbitrary (physical) object carrying a matrix of information;

[0086] "Imprinting" or "Printing": Any process of changing a digital image (including information matrices, documents, etc.) Laser, offset and thermal printing, but also embossing, laser engraving and holographic image generation. Also included are more complex methods such as modelling, in which a digital image is first sculpted into a mold and then cast i...

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PUM

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Abstract

A method for identifying a printing plate for a document includes: printing at least one document with the plate, capturing, at high resolution, at least one image of at least one part of the document, extracting a geometric characteristic of at least one captured image, storing the geometric characteristic extracted, for a candidate document where one seeks to determine whether the printing plate was used to print it, capturing, at high resolution, an image of the part of the candidate document corresponding to the part of the document for which a geometric characteristic has been stored, extracting the geometric characteristic of the image of the candidate document corresponding to the stored geometric characteristic; and determining whether a correlation measurement of the geometric characteristic for the candidate document and the stored geometric characteristic is greater than a pre-defined limit value.

Description

technical field [0001] The invention relates to a method and a device for identifying printing plates of documents. Specifically, the invention contemplates identifying documents in a unique manner, authenticating documents, i.e. being able to detect copies of documents and / or conveying information about documents on documents, such as information identifying the owner of the intellectual property associated with the document and / or document place of manufacture. The term document includes all data carriers such as hard copy documents, blueprints, packaging, arts and crafts, moldings and cards such as identity cards or bank cards. Background technique [0002] The different types of document printing are divided into two groups: the group known as "static printing", in which each document receives essentially the same printed marks by analog printing methods such as "offset printing", and the group known as "serialized" digital printing. A second group of printing, in whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D7/20
CPCG07D7/2033G07D7/2041
Inventor Z·萨冈A·富库J-P·马西科特
Owner ADVANCED TRACK & TRACE SA