应用科学学报 ›› 2016, Vol. 34 ›› Issue (5): 625-632.doi: 10.3969/j.issn.0255-8297.2016.05.015

• 多媒体信息安全专刊 • 上一篇    下一篇

基于构造纹理图像的数字隐写

潘琳, 钱振兴, 张新鹏   

  1. 上海大学通信与信息工程学院, 上海 200444
  • 收稿日期:2016-08-06 修回日期:2016-08-19 出版日期:2016-09-30 发布日期:2016-09-30
  • 通信作者: 钱振兴,副教授,研究方向:信息隐藏,E-mail:zxqian@shu.edu.cn E-mail:zxqian@shu.edu.cn
  • 基金资助:

    国家自然科学基金(No.U1536108,No.61572308,No.61525203,No.61472235)资助

Steganography by Constructing Texture Images

PAN Lin, QIAN Zhen-xing, ZHANG Xin-peng   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China
  • Received:2016-08-06 Revised:2016-08-19 Online:2016-09-30 Published:2016-09-30

摘要:

提出一种通过构造纹理图像来隐藏信息的新型隐写方法。隐写者首先构建一个包含多种不同特征的单元库,用来表征二进制数据与图形单元之间的映射关系;根据秘密信息从单元库中选取图形,并确定图形在白纸上的摆放位置,绘制一幅含有隐写单元的图像;随后在其中添加背景元素,并通过可逆形变操作来生成一幅具有复杂纹理结构的含密图像。接收端在提取信息时,根据密钥对含密图像进行逆操作,去除背景图形后使用匹配滤波器识别源图像中的图形,通过分析其摆放位置和图形特征来提取秘密数据。实验结果表明,该方法生成的含密图像具有良好的视觉效果,使秘密数据得到了很好的隐蔽,而且通过调整参数还可以隐藏任意数量的秘密信息。

关键词: 信息隐藏, 隐写, 纹理合成

Abstract:

This paper proposes a new steganography method using texture construction. The data-hider first constructs a database of elements containing many different patterns and features used to represent secret bits. The data-hider selects patterns and features from the database according to the secret message. The selected elements are painted onto specified positions on a white paper, and some background elements added to the painted paper. With pre-defined transforming functions, the data-hider transforms the painted image to construct a stego-image. On the receiver side, secret messages can be extracted from the stego-image using the inverse operations. Experimental results show that the constructed stego-image has good visual effects, and the secret messages can be properly hidden into the image. Meanwhile, any amount of message can be hidden by choosing different parameters.

Key words: information hiding, texture synthesis, steganography

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