Detection of Information Hiding by Modulating Intra Prediction Modes in H.264/AVC
In the intra-frame coding of H.264/AVC,information hiding can be implemented by modulating the prediction modes of 4×4 luminance blocks.Since this kind of method has characteristics of high speed,good concealment and so on,it has become a great security threat.Therefore,it is necessary to study the steganalysis method.In this paper,we first analyzed the changes of remarkable characteristics in intra-frame coding caused by modulating intra prediction modes for information hiding.We found that the correlation among the prediction modes in different 4×4 luminance blocks,belonging to an intra-frame coding macroblock,was changed.According to this,we have designed statistical models to make quantitative extraction of these correlation characteristics.And a steganography detector was constructed based on the support vector machine.The experimental results show that the steganography detector constructed in this paper can achieve a detection accuracy of more than 90% when the embedding rate is larger than 25%.
information hiding steganalysis H.264/A VC intra prediction prediction modes modulating
Songbin Li Xiuhua Ma Peng Liu Qiongxing Dai Haojiang Deng
Haikou Laboratory,Institute of Acoustics Chinese Academy of Sciences Haikou,China College of Information Science and Technology Hainan University Haikou,China National Network New Media Engineering Research Center Beijing,China
国际会议
杭州
英文
590-593
2013-03-22（万方平台首次上网日期，不代表论文的发表时间）