Moire pattern effect based image anti-fake information hiding and recognizing method

Abstract

The invention discloses a moire pattern effect based image anti-fake information hiding and recognizing method, comprising the following steps: (1) preparing manuscript and anti-fake information; (2)performing digital screening treatment; (3) encoding anti-fake information; (4) performing image synthesis; and (5) recognizing. According to the invention, manuscript and anti-fake information selection scope is wider, encoding and recognition are realized in continuous-tone images, and hidden performance and extraction and recognition performances are strong.

Description

technical field [0001] The invention belongs to the technical field of grating anti-counterfeiting, and in particular relates to a method for hiding and identifying image anti-counterfeiting information based on the moiré effect. Background technique [0002] At present, most of the main printing anti-counterfeiting technologies are based on high-precision equipment and special materials. The cost of printing anti-counterfeiting is relatively high, and once the materials and equipment used for printing anti-counterfeiting are obtained, they will be copied in large numbers, thus losing anti-counterfeiting effect. Images and texts that need to be printed and reproduced are usually output through halftone screening. The anti-counterfeiting technology based on moiré is a kind of anti-counterfeiting technology based on the current printing anti-counterfeiting technology and the production conditions of ordinary printing enterprises. Small laziness, simple anti-counterfeiting pro...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the selection of anti-counterfeiting information is limited to simple shapes and single letters. With the increase of anti-counterfeiting informat

Images