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

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...

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 embedding information, it usually cannot completely match the gray value of the original image dots. One-to-one correspondence, therefore, the quality of the image will be affected to a certain extent

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