| 基于变步长量化的安全图像隐写 |
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| 引用本文： | 何军辉,唐韶华,邢宜博.基于变步长量化的安全图像隐写[J].计算机科学,2009,36(7):56-59. |
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| 作者姓名： | 何军辉 唐韶华 邢宜博 |
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| 作者单位： | 广东省信息安全技术重点实验室,广州,510006 |
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| 基金项目： | 广东省信息安全技术重点实验室基金，国家大学生创新性实验计划，华南理工大学SRP项目 |
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| 摘 要： | 图像隐写通过将信息隐藏在载体图像中进行秘密传送,实现隐蔽通信.提出了VSQS图像隐写算法,利用密钥控制生成高斯序列并取整,用于对经伪随机排列后的图像像素进行变步长量化,根据量化像素与秘密信息之间的关系来修改像素,实现信息的嵌入.同时给出了该算法的一种扩展(称为TLQS隐写).实验结果表明,VSQS和TLQS图像隐写可提供较大的隐藏容量,并能抵抗几种常见的隐写分析方法.
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| 关 键 词： | 隐写术 高斯序列 量化 隐写分析 |
| 收稿时间： | 8/7/2008 12:00:00 AM |
| 修稿时间： | 2008/11/13 0:00:00 |
Secure Image Steganography Based on Step-varying Quantization |
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| HE Jun-hui,TANG Shao-hu,XING Yi-bo.Secure Image Steganography Based on Step-varying Quantization[J].Computer Science,2009,36(7):56-59. |
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| Authors: | HE Jun-hui TANG Shao-hu XING Yi-bo |
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| Affiliation: | School of Computer Science and Engineering;South China University of Technology;Guangzhou 510006;China;Guangdong Key Laboratory of Information Security Technology;China |
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| Abstract: | Image steganography transfers message secretly by embedding the message into a cover image to implement covert communication.We presented an image steganographic algorithm called VSQS.A secret key dependent Gaussian sequence was generated and then rounded,which is used for the step-varying quantization of the pseudo-random permuted image pixels.Depending on the relationship between the quantized pixels and the secret message,the image pixels were modified to embed the message.Furthermore,an extension of thi... |
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| Keywords: | Steganography Gaussian sequence Quantization Steganalysis |
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