Traceability anti-counterfeiting method based on high-fidelity hidden picture

A technology for hiding pictures and traceability information, which is applied in the field of traceability and anti-counterfeiting based on high-fidelity Tibetan pictures, can solve problems such as being unsuitable for directly hiding pictures, and achieve the best anti-counterfeiting effect.

Active Publication Date: 2018-01-16
臧戈平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tibetan image anti-counterfeiting technology is only applicable to half-tone areas, but traceability anti-counterfeiting information is generally printed on an anti-counterfeiting sticker and then attached to the outer packaging or printed directly on the outer packaging, and its information content is generally printed in black (or dark) solid color On a blank substrate, the information area images (numbers, characters, character strings, information codes, etc.) of conventional printed matter are not suitable for direct image storage

Method used

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  • Traceability anti-counterfeiting method based on high-fidelity hidden picture

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Example 1, information comparison. For traceability information that ordinary people can understand, make a copy in the base map. For example, the numbers and figures on the chart can be hidden in a certain base map, so that after detection in the subsequent step 6, they can be compared with the chart to detect the authenticity. For this information, the characters of the base map and the table map may not be in the same area, or may use different fonts, sizes, and so on.

example 2

[0026] Example 2, graphic comparison. For information that cannot be read by ordinary people, such as two-dimensional codes, when hiding pictures, a copy of the information code pattern can be hidden in the adjacent area of ​​​​the corresponding chart pattern, so that when it is detected in the subsequent step 6, the chart and chart The Tibetan pictures are displayed at the same time, and they are close to each other, so it is easy to compare the patterns to identify the authenticity.

example 3

[0027] Example three, related to the content. The information in the hidden map can be a part of the traceability information that is not on the table map, such as a part of the password and so on.

[0028] Step 3: Judging the appearance image before the map generated in step 1, that is, the table map, to determine whether the traceability information code and its surrounding table map meet the requirements for high-fidelity map collection. If the requirements are not met, go to step 4; if the requirements are met , go to step 5.

[0029] Hiding images or information is usually achieved by modulating the halftone dots of printed matter in a specified way. Therefore, the carrier of hidden images or information is halftone dots (or lines). That is to say, the hidden picture can only be realized in the printed halftone dot area, and it is impossible to hide the picture through dot modulation in the blank area or solid color area. In the color very close to the blank or solid col...

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Abstract

The present invention provides a traceability anti-counterfeiting method based on a high-fidelity hidden picture, and relates to the anti-counterfeiting printing technology field. The method comprises: taking at least one area of a superficial picture as a hidden picture area on a printed substrate carrying traceablility information, and hiding one or more than one underlying picture under the superficial picture through screening and printing, wherein at least one color-separated area of the hidden picture area is partial or total halftone when color separating, screening and printing are performed. The traceability anti-counterfeiting method based on a high-fidelity hidden picture performs optimization of a hidden picture anti-counterfeiting superficial picture and one or more than one underlying picture aiming at features and weakness of traceability anti-counterfeiting, performs prevention from simulation and anti-counterfeiting for a carrier of traceability information and performs tamper-proofing, prevention of replacing and anti-counterfeiting of the traceability information itself, so that an optimum anti-counterfeiting effect is achieved.

Description

technical field [0001] The invention relates to the technical field of anti-counterfeiting printing, in particular to a traceability and anti-counterfeiting method based on high-fidelity Tibetan pictures. Background technique [0002] The traceable anti-counterfeiting method is an anti-counterfeiting method that uses a method that can be traced back to the source to achieve the purpose of anti-counterfeiting. Anti-counterfeiting traceability, that is, information traceability, using information traceability signs (including but not limited to barcodes, QR codes, etc.) or information traceability addresses (such as website addresses, official account addresses, inquiry telephones, etc.), through information storage, process control, information reading Acquisition, information verification and other methods, through background software and related corresponding verification information, to determine the authenticity. Traceability and anti-counterfeiting information generally...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/90G06T7/00G06T5/00B41M3/14
Inventor 臧戈平
Owner 臧戈平
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