Design And Research Of Video Information Steganography Algorithm

The popularization and promotion of Internet technology has brought convenience to the transmission and processing of information,but information security problems have also arisen.Information steganography and secret technologies have become an important means to ensure information security.However,encryption technology uses technical means to transform important data into garbled data on public channels.This makes it extremely easy to identify,attracts third-party attention,and attacks information to reduce Information security.The information steganography technology guarantees the security of information transmission by the "presence level" of secret information transmission.By utilizing human visual redundancy and digital media redundancy,the secret information is embedded in the mass carrier and transmitted,thereby improving secret information.Secure transmission performance.This paper mainly studies the information steganography of video.Through the design and selection of information hiding area and the study of information embedding strategy,two information steganography algorithms are proposed: information steganography algorithm based on 3D high-efficiency video coding background and HEVC Information Steganalysis Based on Weighted Matrix.The common point of these two algorithms is to do l??decomposition on the carrier region;then select the ? and ? components to perform DCT transform,select the discrete cosine transform(DCT)IF coefficients as information steganography,but the information is steganographic There are some differences in rules.In the information steganography algorithm based on 3D high-efficiency video coding background,the carrier area of the algorithm is the background image after the multi-viewpoint image is separated from the background.After the secret information is chaotically scrambled in the steganography process,the repeated embedding is performed..The algorithm makes full use of the background image and the weak energy of ?? component to make the algorithm invisible.Using the scrambling and redundancy strategy makes the algorithm have good robustness.In the HEVC information steganography algorithm based onweighted matrix,the algorithm first divides the HEVC video image into blocks according to the quadtree structure,and selects the three luminance blocks with higher texture complexity as the information stegographic region.In the steganography process,the secret information is chaotically scrambled and then embedded using a weighted matrix algorithm.The coefficients of the algorithm's weighted matrix come from 3 different 4?4 blocks,which makes the algorithm have better robustness.The weighting matrix is used to implement information embedding,which has larger capacity.The paper mainly studies the steganographic region and embedding rules of video,and proposes two new information steganographic algorithms.Algorithm 1,using the background of the multi-view video image as the carrier area,performs redundant embedding in the place where the background image is repeated,and solves the problem that the loss of secret information due to the compression of the carrier information in the transmission process causes the loss of the secret information;and algorithm 2 uses the luminance 4?4 block as the carrier.The use of weighted matrix to implement the embedding of secret information makes the algorithm not only have a large embedded capacity,but also solves the problem of the rapid increase of the video bit rate due to the embedded secret information.