关键词: 隐写分析技术, 隐写分析框架, 有限先验知识, 特征基, 表示系数

Abstract: Steganalysis, as the countermeasure of steganography, mainly concentrates on the detection, prevention and destruction of the possible steganography based on covert communication behaviors on the Internet. Research in practical steganographic analysis technology plays an important role in fighting against the steganography abuse by terrorist groups and criminals and maintaining national security and social stability. This paper firstly introduces the research significance and related works in the past, and then proposes the new steganalysis framework to address urgently needed image steganalysis with limited prior knowledge. Taking plentiful, multiple and typical data as study objects, this paper focuses on studying the methods to construct over?completed steganographic analysis feature bases, using these feature bases to represent testing samples and predicting the steganography method of testing samples according to the representing coefficients, which provides theoretical and technical support for developing steganalysis schemes with higher accuracy and better practicality.

Key words: stegnanlytic technique, steganalysis framework, limited prior knowledge, feature bases, representing coefficients