An information hiding method for HEVC video based on Hamming code +1

Abstract

The invention discloses an information hiding method of HEVC video based on Hamming code+1, which utilizes the Hamming code+1 algorithm formed by combining the (1,3,2) matrix coding algorithm and the LSBMR algorithm in steganographic coding, according to the The embedded three-bit secret information modifies the prediction mode to complete the information embedding, and embeds three-bit secret information in four consecutive 4×4 intra-frame luminance blocks, which not only ensures the hidden capacity, but also reduces the risk of video quality degradation caused by the modification of the prediction mode. Influence, which well guarantees the subjective and objective quality of the video, and greatly reduces the impact of embedding hidden information on the video stream; by analyzing the HEVC codec structure, for the prediction unit with a size of 4×4, the intra-frame prediction coding process The medium modulation prediction mode is the prediction mode with the smallest rate-distortion cost that meets the embedding conditions, and uses the Lagrangian rate-distortion model to adaptively select the prediction unit type of the coding unit. This hidden information embedding method can well ensure that the video subjective and objective quality.

Description

technical field [0001] The present invention relates to an information hiding technology, in particular to an information hiding method based on Hamming code+1 HEVC (High Efficiency Video Coding) video. Background technique [0002] With the rapid development of Internet technology and the popularization of digital multimedia applications, the phenomenon of counterfeiting and tampering of multimedia information has become increasingly serious, and information security issues have become more and more prominent. As an effective means of covert communication and copyright protection, information hiding technology has developed rapidly. Common information hiding carriers mainly include text, images, audio and video, etc. Digital video has become an important part of multimedia information hiding because of its large data volume and high efficiency. It is usually stored and transmitted in compressed form. HEVC is a new generation of high-efficiency video compression standard af...

AI Technical Summary

Problems solved by technology

Due to the significant difference in the encoding structure between the HEVC standard and the H.264 / AVC standard, the information hiding algorithm for H.264 / AVC video cannot be directly applied to HEVC video

For the information hiding method of HEVC video, Wang et al. established the grouping mapping relationship between the prediction mode and the hidden information according to the statistical probability distribution of the optimal prediction mode and the suboptimal prediction mode. In a 4×4 brightness block in a frame Embedding 2bit secret information, although the embedding capacity has been greatly improved, but it is not universal and has a great impact on the quality of the embedded video

Another example is that Chung et al. proposed a HEVC video information hiding algorithm based on DCT / DST coefficients, which can effectively control intra-frame distortion drift, weaken its cumulative effect, and improve the visual effect of HEVC video. Null hypothesis, not general, and the method has insufficient embedding capacity

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