Video steganography method based on motion vector embedding distortion decomposition

A motion vector and video steganography technology, which is applied in the field of information hiding, can solve the problems that the anti-detection performance needs to be improved, and cannot fully reflect the spatial-temporal correlation of video coding, so as to achieve the effect of improving the anti-detection performance.

Active Publication Date: 2019-10-11
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

This kind of video steganography method based on additive embedding distortion ignores the interactive influence between video coding

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  • Video steganography method based on motion vector embedding distortion decomposition
  • Video steganography method based on motion vector embedding distortion decomposition
  • Video steganography method based on motion vector embedding distortion decomposition

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Embodiment Construction

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0014] Embodiments of the present invention provide a video steganography method based on motion vector embedding distortion decomposition, such as figure 1 shown, including:

[0015] 1. Perform motion estimation on the video sequence and combine the distortion function to calculate the joint embedding distortion of the motion vectors in the original motion vector field of the P frame, and then calculate the joint modification probability of the co...

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Abstract

The invention discloses a video steganography method based on motion vector embedding distortion decomposition, which comprises the following steps of: performing motion estimation on a video sequence, calculating the joint embedding distortion of a motion vector in an original motion vector field of a P frame by combining a distortion function, and further calculating the joint modification probability of the corresponding motion vector; according to the joint modification probability, calculating an edge modification probability of a horizontal component and a conditional modification probability of a vertical component of the motion vector so as to embed a load into the horizontal component and the vertical component of the motion vector; and forming a motion vector field modified by the video sequence by the motion vector embedded with the load, and generating a video coding bit stream through coding to complete video steganography. Dynamic load distribution in motion vector components is realized and anti-detection performance of the video steganography method is improved.

Description

technical field [0001] The invention relates to the technical field of information hiding, in particular to a video steganography method based on motion vector embedding distortion decomposition. Background technique [0002] Video steganography, as a covert communication method to ensure behavior security, has played an important role in Internet-oriented privacy protection. Most of the existing video steganography methods are based on the minimum additive embedding distortion construction and encoding, by designing the additive embedding distortion function and using STC encoding to realize payload embedding. This kind of video steganography method based on additive embedding distortion ignores the interactive influence between video coding data, cannot fully reflect the space-time domain correlation of video coding, and the anti-detection performance needs to be improved. Contents of the invention [0003] The object of the present invention is to provide a video stega...

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Application Information

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IPC IPC(8): H04N19/467H04N19/567H04N19/58
CPCH04N19/467H04N19/567H04N19/58
Inventor 姚远志李林聪张卫明俞能海
Owner UNIV OF SCI & TECH OF CHINA
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