Video steganalysis method and device based on analyzing cavlc codewords and number of non-zero DCT coefficients

A technology of video steganography and number, which is applied in the field of video steganalysis. It can solve the problems of large amount of calculation and weak steganalysis ability, so as to alleviate the mismatch of carrier source, improve performance and stability, and alleviate the problem of carrier source. The effect of the mismatch phenomenon
CN112637605BActive Publication Date: 2022-01-11INST OF INFORMATION ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF INFORMATION ENG CHINESE ACAD OF SCI
Publication Date
2022-01-11

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Abstract

The invention relates to a video steganographic analysis method and device based on the analysis of CAVLC code words and the number of non-zero DCT coefficients. The method comprises: dividing the compressed video to be tested into several frame groups; for each frame group, by analyzing the correlation between the CAVLC entropy code word and the non-zero DCT coefficient numbers of adjacent 4Ɨ4 brightness macroblocks , to obtain the video steganalysis features; using the obtained video steganalysis features, a classifier is used to conduct a steganographic classification judgment for each frame group in the compressed video to be tested. The present invention extracts four types of sub-features, and finally obtains 635-dimensional steganalysis features. The present invention can effectively detect the current existing video steganography method in the DCT coefficient domain, can effectively alleviate the carrier source mismatch phenomenon in the steganalysis analysis to a certain extent, has a large scope of application, and can be based on different video coding standards DCT coefficient domain video steganography for effective analysis.
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Description

technical field

[0001] The present invention relates to the field of video steganalysis (Video Steganalysis), which belongs to the sub-field of information hiding in the field of information security technology, specifically an analysis of DCT coefficient domain video steganalysis based on the analysis of CAVLC codewords and the number of non-zero DCT coefficients Methods and Apparatus. Background technique

[0002] The purpose of steganography is to conceal the fact and content of the secret message being sent. In contrast, the goal of steganalysis is to determine whether there is an embedded secret message in a multimedia file. In recent years, with the rapid development of streaming media and Internet video services, digital video is gradually replacing images as the most influential media. Therefore, video steganography and steganalysis have become current research hotspots.

[0003] Commonly used embedded elements include Intra Prediction Mode, Inter Prediction Mode,...

Claims

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