基于JPEG 二进制压缩流的隐写分析 - 计算机工程.PDF

35 6 2009 3 Vol.35 No.6 Computer Engineering March 2009 ·· 2009 A TP309.2 JPEG ( 200240) JPEG JSteg Outguess Steganalysis Based on JPEG Binary Compressed Stream LIU Qian, LU Hong-tao (Department of Computer Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jaotong University, Shanghai 200240) AbstractThis paper proposes a method of steganalysis based on JPEG binary compressed stream, which is different from the steganalysis based on Discrete Cosine Transform(DCT) frequency domain and image spatial domain. It utilizes the changes of binary compressed data stream caused by the hidden messages, and uses Multiple Embedding Method(MEM) to draw a feature vector, which is used to train the One Class Support Vector Machine(OC-SVM). OC-SVM get high classification rate towards JSteg and Outguess hiding methods in the experiment. Key wordssteganalysis; binary compressed stream; Multiple Embedding Method(MEM); One Class Support Vector Machine(OC-SVM) [1] () 3 (1) (2) 2 2.1 JPEG (3) JPEG () JPEG JPEG 1 [2] JPEG Alice