| 基于粒子群算法和改进PM1的JPEG图像中的安全密写方法 |
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| 引用本文： | 于丽芳,赵耀,倪蓉蓉.基于粒子群算法和改进PM1的JPEG图像中的安全密写方法[J].南京邮电大学学报(自然科学版),2009,29(3):49-53. |
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| 作者姓名： | 于丽芳 赵耀 倪蓉蓉 |
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| 作者单位： | 北京交通大学,信息科学研究所,北京,100044 |
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| 摘 要： | PM1(加、减1)是LSB密写方法的一种改进,它的嵌入和提取几乎和LSB一样简单,却提供了更好的安全性.文中基于JPEG图像的属性对PM1进行改进,并结合粒子群算法(particle swarm optimization,PSO)提出了一种用于JPEG图像的高安全性和高容量的密写方法.充分的实验表明,该方法在保持分块效应和直方图,以及高容量方面都优于现有的JPEG图像中的经典密写算法.
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| 关 键 词： | 密写 粒子群算法 安全性 高容量 |
Secure Steganography in JPEG Images Based on PSO and Improved PM1 |
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| YU Li-fang,ZHAO Yao,NI Rong-rong.Secure Steganography in JPEG Images Based on PSO and Improved PM1[J].Journal of Nanjing University of Posts and Telecommunications,2009,29(3):49-53. |
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| Authors: | YU Li-fang ZHAO Yao NI Rong-rong |
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| Institution: | YU Li-fang,ZHAO Yao,NI Rong-rong Institute of Information Science,Beijing Jiaotong University,Beijing 100044,China |
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| Abstract: | PM1(Plus/Minus 1)is a natural modification to LSB(Least Significant Bits)based on steganography.While being as simple as LSB in embedding and extracting procedure,PM1 provides much higher security.In this paper,we improve the PM1 according to attributes of JPEG images,and propose a steganographic scheme based on PSO and improved PM1.Experiments show that our method outperforms other methods in security and capacity. |
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| Keywords: | JPEG |
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