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Segmentation Based Video Steganalysis to Detect Motion Vector Modification (Security and Communication Networks, 2017)

02/04/2018 - Video Steganology

P. P. Wang, Y. Cao, X. F. Zhao                                                                                         

ABSTRACT

This paper presents a steganalytic approach against video steganography which modifies motion vector (MV) in content adaptive manner. Current video steganalytic schemes extract features from fixed-length frames of the whole video and do not take advantage of the content diversity. Consequently, the effectiveness of the steganalytic feature is influenced by video content and the problem of cover source mismatch also affects the steganalytic performance. The goal of this paper is to propose a steganalytic method which can suppress the differences of statistical characteristics caused by video content.The given video is segmented to subsequences according to block’s motion in every frame.The steganalytic features extracted from each category of subsequences with close motion intensity are used to build one classifier. The final steganalytic result can be obtained by fusing the results of weighted classifiers.The experimental results have demonstrated that ourmethod can effectively improve the performance of video steganalysis, especially for videos of low bitrate and low embedding ratio.

Cite this paper as:

[1] P. P. Wang, Y. Cao, X. F. Zhao. Segmentation Based Video Steganalysis to Detect Motion Vector Modification, Security and Communication Networks, vol. 2017, p. 8051389:1–8051389:12, 2017. [PAPER]