Large — Capacity LSB information hiding scheme based on two-dimensional code

In the background of large data, information security faces more opportunities and challenges. Image steganography as an important means of information hiding, is widely used in military, medical, commercial and other important occasions. Two-dimensional code image as a convenient means of information exchange everywhere. In this paper, an improved LSB information hiding algorithm is designed based on the combination of image steganography and two-dimensional code. The two-dimensional code as a special image carrier, in which the RGB channel embeds secret information to carry out covert communication, has the advantages of simple implementation and high security. The experimental results show that the LSB embedding algorithm proposed in this paper has good invisibility, and the embedding capacity is very large, which is robust to noise and shear.