A kind of information hiding and extraction method of color two-dimensional code embedded in color image

Abstract

The invention discloses an information hiding and extraction method for embedding a color two-dimensional code into a color image, including color two-dimensional code embedding, embedding error data hiding and color two-dimensional code extraction, and secret information is generated through a color QR code based on a zing library Code and recognition method to generate color two-dimensional code, greatly improve the capacity of secret information; use color two-dimensional code as secret image, combined with two-dimensional DCT transformation, make large-capacity color two-dimensional code embedded in color image, and embed the decimal generated in the process The error is concealed twice, which can restore the color two-dimensional code or the color image losslessly, realize the correct decoding of the extracted color two-dimensional code and the lossless extraction of the color image, and achieve the secret transmission of large-capacity information.

Description

Technical field [0001] The present invention relates to a method of information hiding extraction of color digital images, in particular to a color two-dimensional code embedded in a color image information hiding and extraction method. Background [0002] The rapid development of the current social Internet technology has brought convenience to information transmission and has also brought hidden dangers to information security. Information hiding is to embed secret information into the carrier under the premise of visually not affecting the carrier, which can realize the secret transmission of secret information, and the technology is widely used in copyright certification, content protection, secret information transmission and other aspects. In order to improve the security of information and expand the capacity of secret transmission of information, the use of color two-dimensional code information hiding technology has also become a hot topic in current research. The color ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing color secret information images cannot be extracted without loss, and to provide an information hiding and extraction method for embedding color two-dimensional codes into color images, which is used to expand the capacity of information hiding. The two-dimensional code is imperceptibly embedded in the carrier image, and the true color two-dimensional is extracted from the carrier image for computer recognition and decoding, and the secret information can be read objectively

Images