Invisible code graphics, processing method thereof and anti-fake application

A technology of invisible coding and processing method, which is applied in the field of information processing and can solve the problems such as the inability to correspond one-to-one image dot gray value and the influence of image quality.

Inactive Publication Date: 2014-08-20
广东绿之彩科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing screen coding technology, the information module for recording information is composed of a group of dot matrix with specific size, specific shape, and specific direction. When embe

Method used

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  • Invisible code graphics, processing method thereof and anti-fake application
  • Invisible code graphics, processing method thereof and anti-fake application
  • Invisible code graphics, processing method thereof and anti-fake application

Examples

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Embodiment 1

[0060] First, take the bill system as an example to specifically illustrate the invisible coding graphic anti-counterfeiting technology:

[0061] like figure 1 and figure 2 As shown, it is the processing method of invisible coding graphics of the present invention, which includes the process of image binarization, coding graphics hiding and information embedding, and the specific steps are as follows:

[0062] 1) Binarize the image that needs to embed information, and the binarized image is divided into two parts marked by white (0) and black (1);

[0063] 2) The part of the image marked as white (0) is used to bury the coded graphics of the information; the part of the image marked as black (1) is used as the shading part of the image; the image that needs to embed information is R, and the other areas are

[0064] 3) Given two grayscale color blocks with the same size as the image in step 1), the grayscale values ​​are f 1 color block F 1 , the gray value is f 2 colo...

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PUM

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Abstract

The invention discloses invisible code graphics, a processing method of the invisible code graphics and anti-fake application and belongs to the field of information processing. The processing method includes a processing method with the image hiding technology and the coding technology combined. Images are divided into two parts, two different screening manners are adopted for screening the two parts of the images respectively, amplitude-modulating screening is conducted on an information hiding part, frequency modulating screening is conducted on the other part of the images, and meanwhile coding information is recorded according to the sequence of exposing pixel points in a grid of an area needing information hiding so that the purpose of information hiding can be achieved. The hidden code graphics serves as anti-fake labels, after the labels are copied by a common copying machine, the images with amplitude-modulating dot screening can be well shown, however, the images with amplitude-modulating dot screening cannot be completely shown, and therefore the code graphics can be shown and initial fake prevention is achieved. Meanwhile, buried coded messages can be obtained through an image sensor, and therefore authenticity is identified after the coded messages are compared with content on certificates and securities.

Description

technical field [0001] The invention relates to the field of information processing, in particular to an invisible coding pattern and its processing method and anti-counterfeiting application. The processing method includes hiding the coding pattern and embedding the coding information. Background technique [0002] The earliest barcode used to record information is a one-dimensional barcode. It records information through the black area representing 1 and the white area representing 0. Because the amount of recorded information is small, two-dimensional barcodes appeared later, and two-dimensional barcodes are in the one-dimensional barcode. Based on the development, although there are improvements, such as a large amount of information that can be recorded, it still has the disadvantages of one-dimensional barcodes, such as still recording information through black squares representing 1 and white squares representing 0, and the need for special The position of the barcode...

Claims

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Application Information

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IPC IPC(8): H04N1/54
Inventor 曾志平曾家明江德勇周文豪
Owner 广东绿之彩科技股份有限公司
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