计算机工程 ›› 2011, Vol. 37 ›› Issue (11): 164-166,169.doi: 10.3969/j.issn.1000-3428.2011.11.056

• 安全技术 • 上一篇    下一篇

基于改进亚仿射变换的图像信息隐藏算法

卢 斌,王 冰   

  1. (西北大学信息科学与技术学院,西安 710127)
  • 收稿日期:2010-12-04 出版日期:2011-06-05 发布日期:2011-06-05
  • 作者简介:卢 斌(1986-),男,硕士研究生,主研方向:图像处理,数字水印,信息隐藏;王 冰,教授
  • 基金项目:
    陕西省科技攻关计划基金资助项目(200405-G25)

Image Information Hiding Algorithm Based on Improved Sub-affine Transformation

LU Bin, WANG Bing   

  1. (College of Information Science and Technology, Northwest University, Xi’an 710127, China)
  • Received:2010-12-04 Online:2011-06-05 Published:2011-06-05

摘要: 为改进仿射变换的自身安全性,提出一种基于改进亚仿射变换的图像融合信息隐藏算法。通过改进的亚仿射变换对秘密信息图像做预处理,将密钥从6个提升到8个,并结合Logistic混沌序列利用图像融合技术完成秘密信息的嵌入。实验表明,该亚仿射变换有较好的置乱效果和安全级别,而Logistic混沌序列相比于传统隐藏算法中的混合因子具有更大的密钥空间,能提高图像隐藏的安全性。

关键词: 信息隐藏, 改进的亚仿射变换, Logistic混沌序列, 图像融合

Abstract: An information hiding algorithm of image fusion technology is proposed based on the improved sub-affine transformation. This algorithm preprocesses the secret information image by using the improved sub-affine transformation, increases the key of the original algorithm from six to eight, and completes hiding secret information by using image fusion technology based on Logistic chaos sequences. Experimental results show that sub-affine transformation has good scrambling effect and safety level, and Logistic chaos sequence which enhances the security of image hiding compared with traditional hiding algorithm’s blend factors have larger space.

Key words: information hiding, improved sub-affine transformation, Logistic chaos sequence, image fusion

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