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Video steganography analysis method based on space-time domain local binary pattern

A technology of local binary mode and video steganography, which is applied in character and pattern recognition, digital video signal modification, computer components, etc. It can solve the time-space correlation measurement and fail to consider the time-space domain correlation of video sequence area activity The impact of the problem, to achieve the effect of reducing interference, improving the effectiveness of detection, and training with low complexity

Inactive Publication Date: 2015-04-15
TIANJIN UNIV
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Problems solved by technology

Another video steganalysis method proposed by Pankajakshan et al., although it utilizes the temporal and spatial correlation of video sequences to a certain extent, it does not measure the temporal and spatial correlation, nor does it consider the impact of video sequence regional activity on temporal and spatial domain correlation. sexual influence

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  • Video steganography analysis method based on space-time domain local binary pattern
  • Video steganography analysis method based on space-time domain local binary pattern
  • Video steganography analysis method based on space-time domain local binary pattern

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0041] The present invention utilizes the characteristic that the time-space domain of the video sequence has correlation, establishes a three-dimensional orthogonal plane including the space-time coordinate axis, divides the video frame into three categories according to the regional activity classification standard, and counts the LBP corresponding to different planes in each area Histogram, and operate with the weight matrix to establish the ST_LBP model, so that it has a higher detection rate while maintaining a lower dimension.

[0042] Step 1. Classify each frame in the video sequence to be analyzed in units of 8×8 blocks according to the regional activity classification standard;

[0043] Classification rules:

[0044] A very important feature of a video seq...

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Abstract

The invention discloses a video steganography analysis method based on a space-time domain local binary pattern. The video steganography analysis method includes step 1, classifying each frame in a video sequence to be analyzed by taking 8x8 blocks as a unit according to regional activity classifying standards; step 2, respectively establishing three-dimensional orthogonal planes, containing time-space coordinate axis, corresponding to classifying result, and making statistic analysis on LBP histograms of different three-dimensional orthogonal planes corresponding to each area in the classifying result; step 3, introducing a concept of activity factor, and enabling the activity factor and the corresponding LBP histograms to be in operation to acquire ST_LBP features; step 4, utilizing a Fisher Ratio method for feature selection, and realizing classifying recognition of steganographic information. Compared with the prior art, the video steganography analysis method has the advantages that by introducing the activity factor, interference, on detection result, caused by movement of an activity area object can be lowered, so that detection effectiveness is improved effectively; limitation of feature dimension is avoided, and valuing of radius R and field point number P in an LBP definition can be further expanded, so that relevance of space-time domain of the video sequence is utilized more effectively.

Description

technical field [0001] The invention relates to the field of multimedia information security, in particular to a video steganalysis method based on a local binary mode in space-time domain. Background technique [0002] With the rapid development of digital multimedia and network technology, digital products have brought various conveniences to people's daily life. At the same time, various information security issues emerge in an endless stream. As a research hotspot in the field of information security, information hiding technology is to embed secret information into digital carriers in a way that does not attract the attention of third parties, so as to achieve copyright protection, covert communication and other purposes. Video information hiding means that video is used as a carrier signal to transmit secret information. As its countermeasure technology, video steganalysis aims to reveal the existence of secret information. It starts late and is difficult. It is of g...

Claims

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Application Information

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IPC IPC(8): H04N19/467G06K9/00
CPCG06V10/443G06V10/44
Inventor 苏育挺张静张承乾刘芳
Owner TIANJIN UNIV
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