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Anti-counterfeiting method for high-fidelity image hiding in information code area

An information code and high-fidelity technology, which is applied in the anti-counterfeiting field of high-fidelity Tibetan pictures, can solve the problems that the hidden picture technology cannot be used directly, and achieve the effect of strengthening the anti-counterfeiting effect

Active Publication Date: 2018-01-12
臧戈平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, under normal circumstances, image hiding technology cannot be directly used in information code areas such as conventional barcodes and QR codes.

Method used

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  • Anti-counterfeiting method for high-fidelity image hiding in information code area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0040] The dark solid color of the information code is replaced, and the dark halftone is used for printing, and the image is hidden in the halftone area. For example, use 80% black halftone to print the barcode, without affecting the machine reading at all, modulate the halftone of the dark line, there is enough space to hide in a thick line of the barcode Arabic numerals throughout the barcode.

Embodiment 3

[0042] The dark area and the light area of ​​the information code are not necessarily required to be a completely uniform color. Under certain conditions, as long as the dark area and the light area maintain sufficient contrast, at the same time in the respective areas (the dark area and the light area) ) to maintain a low contrast, it will not disturb the reading of the information code. For example, an image with a grayscale range of 60% to 100% is used for the dark area, and an image with a grayscale range of 0% to 30% is used for the light area. For another example, the background is a halftone of light ink, such as 70% of Y (yellow), and the dark area is halftone of dark ink, such as 50% of K (black). Furthermore, starting from an independent color chart, the information code can be superimposed on its partitions for image processing, the color of the dark area of ​​the information code will be darkened, and the color of the light area will be lightened, thus forming an e...

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Abstract

The invention provides an anti-counterfeiting method for high-fidelity image hiding in an information code area, and relates to the technical field of anti-counterfeiting printing. The method comprises the steps that the local or whole information code area is adjusted as an image hiding area aiming at an surface image suitable for image hiding optimized by a specific printing system, so that theinformation code surface image containing the image hiding area is obtained; anti-counterfeiting image hiding screening and printing are conducted on a base image which needs to be hidden in the imagehiding area through the specific printing system; during color separation, screening and printing, at least one local or whole color separation is half-tone in the image hiding area. According to themethod, reading and detection of an information code through a code scanning machine or a mobile phone are not affected, and meanwhile, one or more base images can be hidden under the information code area; the information code of the surface image can be read by a conventional means, and the base images can be read and detected by an optical means or a scanning means or the mobile phone corresponding to image hiding, so that the purpose of counterfeiting resistance is achieved.

Description

technical field [0001] The invention relates to the technical field of anti-counterfeiting printing, in particular to an anti-counterfeiting method for hiding pictures with high fidelity in an information code area. Background technique [0002] Information codes refer to all kinds of printed codes containing information that integrate coding, printing, identification, data collection and processing, including common barcodes, two-dimensional codes and other related codes. [0003] A barcode or barcode (barcode) is a graphic identifier used to express a set of information by arranging multiple black bars and spaces of varying widths according to certain coding rules. Common commodity barcodes generally consist of a prefix part, a manufacturer code, a commodity code and a check digit. [0004] Two-dimensional code (2-dimensional barcode) is a black-and-white graphic distributed on a plane (two-dimensional direction) with a specific geometric figure according to a certain rul...

Claims

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Application Information

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IPC IPC(8): G06K19/06
Inventor 臧戈平
Owner 臧戈平
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