Image Hiding Algorithm Based On The Logistic Sequence And LDPC Codes

In recent years,with the continuous development of the Internet,Image plays an increasingly more important role in the network communication,and the openness of the Internet also brings forward new requirements for the security transmission of the image information.Information hiding technology based on channel coding is a new technology of information security among them,the channel coding image hiding technology based on pseudo-random sequence is a hot research topic in recent years,but it has the problems of information coverage and the embedding of secret information.This paper proposes an image hiding algorithm based on Logistic sequence and LDPC codes.In order to solve the problem of high decoding complexity in LDPC codes with low SNR,this paper proposes an improved BP decoding algorithm,which is based on whether the detector is stable in the process of three iterations;According to the product operation in the information transfer process is easy to make the data overflow problem,by adding data constraints,ensure multiplication of information in its representation range,to avoid data overflow problem.The Logistic sequence is introduced into the image hiding algorithm based on channel coding,The 3 group keys generation 3 corresponding length of the Logistic sequence and the ascending order,get the corresponding position of the conversion matrix,using the 3 position transformation matrix to achieve the secret image information encryption and image secret information embedding.The experimental results show that the improved algorithm has a better hiding effect than other algorithms,and it can solve the problem of information coverage and the problem of uneven embedding position,and to some extent,balance the security,invisibility and complexity.