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Video Steganalysis Based on Difference Analysis

Author: ZhouTing
Tutor: QiuWeiDong
School: Shanghai Jiaotong University
Course: Applied Computer Technology
Keywords: Steganalysis Steganography MPEG Difference analysis ffmpeg
CLC: TP391.41
Type: Master's thesis
Year: 2010
Downloads: 84
Quote: 0
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Abstract


Information hiding technique is an information hidden skills and science , the so-called information hiding is to let designated recipient anyone aware of the content of the information transfer events or information . Steganalysis for images, video , sound and other multimedia data , the steganography algorithms and to hide no information about the situation , and only through the analysis of multimedia data , to detect whether it contains hidden information . With the development of the network , especially the widespread use of the video sites , multimedia data ( such as potatoes , youtube , etc.) on the Internet there are a lot , the steganography analysis technology is a difficult task . This paper presents a passive steganalysis method to detect whether the video carrying hidden information , and use of open-source MPEG video files codec library ffmpeg, the actual video analysis experiments , the experimental results show that , for different video objects and watermark embedding rate , this algorithm can effectively detect the hidden information . The algorithm and experimental details are as follows : passive steganalysis algorithm proposed in this paper : implicit write based on the difference between the analysis of video analysis algorithms . First, the use of improved median filter algorithm for processing the I-frames of the video file ; Then, the I frame data before and after change in the filtering statistics ; using the corresponding differential analysis method based on statistical results whether the video file containing hidden information . Also by experimental observation embedding strength and embedding rate difference analysis , and then find the effective detection range of passive steganalysis algorithm . When embedding strength is greater than 6 or embedding rate greater than 8% , the difference between the analysis method can effectively detect files with hidden information .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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