Video steganographic method based on macro block partition mode disturbance

A technology of macroblock division and division method, which is applied in the field of information security and can solve the problems of distinguishing common carriers with a correct rate, limited, and low security.

A technology of macroblock division and division method, which is applied in the field of information security and can solve the problems of distinguishing common carriers with a correct rate, limited, and low security.

CN104010193AInactive Publication Date: 2014-08-27INST OF INFORMATION ENG CAS
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  • Video steganographic method based on macro block partition mode disturbance
  • Video steganographic method based on macro block partition mode disturbance
  • Video steganographic method based on macro block partition mode disturbance

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Embodiment Construction

[0078] Attached below Figure 5-7 The present invention is further described.

[0079] Before adopting the present invention to steganographically embed secret information, the data to be embedded can be encrypted first to obtain a random binary data stream. The secret information embedding process of the video steganography method based on the perturbation of the macroblock division method proposed by the present invention is as follows: Figure 5 As shown, the specific operation details are as follows:

[0080] 1) Obtain the video frame that needs to be steganographically embedded, and for each macroblock divided according to the 8×8 method in the frame, first obtain its 8-bit binary number expression ( Figure 7 ), and then perform a bitwise XOR operation on the expression to obtain 0 or 1, and finally form a vector x with all 0 or 1 obtained in this way;

[0081] 2) For each macroblock divided according to the 8×8 method in the frame, calculate the corresponding macrobl...

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Abstract

The invention relates to a video steganographic method based on macro block partition mode disturbance. The method includes an embedment process of secrete information and an extraction process of the secrete information. Two hidden channels are built in the embedment process of the secrete information, the secret information is embedded through different steganographic codes, and the secrete information is extracted from the two hidden channels sequentially in the extraction process of the secret information. Preferably, the two hidden channels are built through the steganographic codes including a Syndrome Trellis Code and a Wet Paper Code, and embedment and extraction of the secret information are carried out. Various steganographic codes are used comprehensively to carry out video steganography, high embedment efficiency is achieved, attack of an existing video steganographic analysis method can be resisted effectively, and the video steganographic method is especially suitable for high-safety hidden communication; different macro block division mode disturbance costs can be made according to different application scenes, and high flexibility is achieved.

Description

technical field [0001] The invention belongs to the field of information security, and relates to a video steganography method based on disturbance of macroblock division mode under the H.264 / AVC video coding standard and the application of the method in covert communication. Background technique [0002] Information hiding technology in the field of information security consists of two parts: steganography and steganalysis. The former mainly studies how to embed secret information into images, audio, video and other carriers to achieve the purpose of covert communication, while the latter uses machine learning and pattern recognition and other methods to distinguish between ordinary carriers and steganographic files. [0003] Generally, when designing a steganographic algorithm, the following factors need to be considered comprehensively: [0004] 1) Imperceptibility: It is required that the carrier before and after the steganography is indistinguishable from the human sen...

Claims

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Application Information

Patent Timeline
27 Aug 2014
Publication
CN104010193A
IPC
H04N19/46; H04N19/176
Inventors
张弘; 曹纭