为保证水印的安全性，在嵌入之前先对水印图像作置乱处理，再将水印图像位扩展为原始图像的两倍大小。
To ensure the security of wartermark, the wartermark image was scrambled beforeembedding and then expanded to the twifold size of the original image.
基于混沌置乱的图像水印算法。
An image watermarking algorithm based on chaotic scrambling.
提出了一种实用的数字图像置乱新算法。
This paper presents a useful new algorithm of digital image scrambling.
给出了加密算法的置乱模块和替代模块；
The permutation module and the substitution module are designed.
提出了一种新的基于魔方的混沌图像置乱算法。
In this paper, a new algorithm is proposed for image scrambling based on magic cube and chaotic.
第四章介绍了水印的纠错编码和随机置乱技术。
In chapter four, I introduced the technology of ECC and random permutation.
提出了一种基于队列变换的数字图像置乱新算法。
A new class of digital image scrambling algorithm based on the method of queue transformation is proposed.
提出了基于模糊熵理论的图像置乱程度评价新方法。
The new image scrambling degree evaluation method based on fuzzy entropy theory is proposed.
提出了基于模糊散度理论的图像置乱程度评价新方法。
The new image scrambling degree evaluation method based on fuzzy divergence theory is proposed.
实验结果表明，置乱技术在抵抗剪切攻击方面是非常有效的。
Experimental results indicate that these techniques are very effective in keeping resilience to cropping attack.
实验表明，给出的图像置乱度能较好地反映图像的置乱效果。
Experimental result shows that image scramble degree reflects the scramble effect well.
提出了一种新的密钥控制下的分层变换的数字图像置乱算法。
Presents a new technology for scrambling and restoring digital image Based on the hierarchical transformation under the control of secret key.
扰动后的系统服从均匀分布，具有更为理想的扩散特性和置乱特性。
After being perturbed, chaotic system can generate chaotic binary sequences with uniform distribution and with statistic properties invulnerable to cryptographic analysis.
实验结果表明该方法具有较高的安全性，能快速达到预期的置乱度。
Experiments show that our methods have high security and can obtain expected disorder degree quickly.
引入一种新的基于地址错位的随机发生器算法，对所嵌入信息进行置乱。
Firstly a new pseudo-random generator is introduced based on the dislocation of sorting, and the embedded information is scrambled.
与传统数据加密方法不同，置乱方法能够与视频编解码进行紧密的结合。
Differing from the traditional encryption methods, these scrambling methods being proposed can be embedded into the video encoding and decoding processes compactly.
文章提出了一种新的基于混沌的魔方置乱算法，并将其应用于图像加密。
A new magic cube permutation algorithm based on chaos is presented in this paper for image encryption.
以密码学中的公钥思想为基础，提出了一种基于原根的数字图像置乱技术。
Based on the ideas of public key cryptography, a new scrambling technology of digital image based on primitive roots is given.
讨论了一种新的置乱度计算公式，试验表明，该公式可以很好地反映置乱程度。
A novel calculating formula of scrambling degree is presented at length, the experiments showing that the formula can better describe the result of the image scrambling.
本文的主要创新性工作为：(1)提出了一种新的衡量图像置乱程度的数值指标。
The main innovative points of this thesis are as follows: (1) a new numerical index to score the image scrambling extent is presented.
嵌入过程中水印：的置乱参数和密钥图像等秘密参数决定了该水印方案的安全性。
The security of the scheme is depended on the scrambling parameters and the key image, etc.
另外，还通过计算机实验，对置乱网络的遍历时间复杂度及其置乱性质进行了分析。
The paper also analyzed the time complexity and the scrambling performance of the new networks by computer experiments.
另外，为了增强鲁棒性可对水印数据进行随机置乱操作以抵抗剪切等信号处理操作。
Furthermore, to enhance robustness, a random permutation of the watermark is used to defeat the attacks of signal processing, such as image crops.
该算法结合了图像置乱技术和改进的LS B嵌入方案，对嵌入的数据形成了双层保护。
The presented steganography approach combines image scrambling technology and modified LSB embedding and provides double protection for the embedded message.
在此基础上，提出了局域单点扩散概念，产生了单点扩散与置乱相结合的图象置乱算法。
On the basis of this, the concept of local single point spreading is introduced and the image hashing algorithm combining into single point spreading and hashing has been also generated.
利用参数扰动产生的有限精度混沌序列产生加密矩阵和置乱矩阵，对灰度图像进行加密。
Encryption matrixes and replacement matrixes are being generated by using the chaotic mapping via parameter perturbation, and then the gray-scale image is encrypted.
传统的混沌水印置乱方案存在的两类不足：抗混沌预测技术的能力和有限字长效应的影响。
The traditional chaotic watermark scrambling method has two weak points: the ability of anti-forecast technology and the influence of word length.
传统的混沌水印置乱方案存在的两类不足：抗混沌预测技术的能力和有限字长效应的影响。
The traditional chaotic watermark scrambling method has two weak points: the ability of anti-forecast technology and the influence of word length.
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