摘要： 系统全面地介绍了信息隐藏容量分析的研究成果，分析了各种信息隐藏模型的特点，指出了进一步的发展方向，对该领域的研究有着重要的指导意义。

关键词: 信息隐藏；隐藏容量；高斯分布；攻击信道

Abstract: This paper presents the capacity investigation result of information hiding comprehensively, analyzes the characteristics of various information hiding models, and indicates the advancing direction. It has instructional significance in the research of this field.

Key words: Information hiding; Hiding capacity; Gauss-distribution; Attack-channel