3D-HEVC interframe information hiding method based on visual perception

Abstract

The invention discloses a 3D-HEVC interframe information hiding method based on visual perception, including two parts of information embedment and information extraction. In the information embedment process, the visual perception feature of the human eye is taken into consideration, the stereoscopic image is obtained according to the stereoscopic image significant model, and the stereoscopic significant image is binarized into the significant block and the non-significant block with the combination of the otsu threshold; for different regions, the secret information is used to correct the coding quantization parameter according to different modulation rules; and then the corrected coding quantization parameter is used to code the coding tree unit to complete the embedment of secret information. In the information extraction part, the participation of the original video is not required, transmission of any edge information is not required, and the secret information can be blindly extracted. The advantages are that the method combines the visual perception feature of the human eye and selects the P frame and the B frame as the embedded frame, which effectively prevents reduction in the subjective quality of the stereo video; the computational complexity is low and the influence on the bit rate is small; and the blind extraction is achieved.

Description

Technical field [0001] The present invention relates to a video information hiding technology, in particular to a method for hiding information between 3D-HEVC frames based on visual perception. Background technique [0002] 3D (three dimensional) video can bring a brand new visual impact to users, which has attracted widespread attention. With the maturity of Internet technology, 3D video is easily processed illegally, and the safety of 3D video has become a major issue that restricts the commercialization of 3D products. Information hiding technology can effectively complete the secret communication and copyright judgment of multimedia data, and can better solve the information security problem in the process of video coding transmission. The volume of 3D video data is huge, and it must be compressed efficiently in order to save transmission bandwidth and storage space. JCT-3V, composed of the ITU-T Video Coding Expert Group and the ISO / IEC Moving Picture Expert Group, is com...

AI Technical Summary

Problems solved by technology

3D video needs to be encoded and transmitted, and the hidden algorithm in the original domain cannot be directly applied to the compressed domain, otherwise the hidden information will be lost

At present, the embedding carriers selected by video information hiding technology are mainly intra-frame prediction mode, DCT coefficients, motion vectors, etc. These common embedding carriers are vulnerable to illegal attacks, which undoubtedly reduces the security of video information hiding technology

At the same time, because the human eye pays different attention to different areas of the same video, the more focused areas can tolerate less distortion, and the less focused areas can tolerate greater distortion, and the existing inter-frame information hiding algorithms simply use Concealed information modulates video coding parameters without considering the perceptual characteristics of the human visual system (HVS), and cannot maximize the performance of the algorithm. Therefore, it is necessary to study a 3D-HEVC inter-frame information hiding method based on visual perception

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