| 一种混沌系统的设计及其在图像保密变换中的应用 |
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| 引用本文： | 陈永红,黄席樾. 一种混沌系统的设计及其在图像保密变换中的应用[J]. 计算机应用, 2004, 24(10): 52-55 |
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| 作者姓名： | 陈永红 黄席樾 |
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| 作者单位： | 重庆大学,自动化学院,重庆,400044;重庆师范大学,数学与计算机科学学院,重庆,400047;重庆大学,自动化学院,重庆,400044 |
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| 摘 要： | 提出了一种四分段一维线性混沌系统的设计及其混沌序列应用于图像保密变换中的方法。考察了基本混沌系统的数学性质，该混沌系统生成的混沌序列具有良好的统计特性。在基本映射的基础上设计出多重迭代混沌系统，通过随机改变混沌的迭代次数、分段的斜率以及改变混沌的初始值和参数，提高混沌序列的复杂度，增加了混沌系统的安全性。随后应用混沌序列结合本文提出的图像保密变换方法对图像进行加密解密。
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| 关 键 词： | 混沌系统 混沌序列 m序列 图像保密变换 |
| 文章编号： | 1001-9081(2004)10-0052-04 |
Design of chaotic system and application in image secure transformation |
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| CHEN Yong-Hong,,HUANG Xi-Yue. Design of chaotic system and application in image secure transformation[J]. Journal of Computer Applications, 2004, 24(10): 52-55 |
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| Authors: | CHEN Yong-Hong HUANG Xi-Yue |
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| Affiliation: | CHEN Yong-Hong~1,2,HUANG Xi-Yue~1 |
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| Abstract: | A kind of piecewise linear chaotic map to design chaotic ciphers and approach of image transformation by using chaotic sequence were proposed. Several excellent properties of chaotic sequence were obtained by studying chaotic system mathematic characters. Based on this kind of chaotic map,another kind of chaotic system was designed. Its generated chaotic sequence had higher complexity through stochasticly changing the iterative times and subsection slope. Finally,digital image was encrypted by using the approach of image transformation and chaotic sequence. |
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| Keywords: | chaotic system chaotic sequence m-sequence image secure transformation |
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