| 彩色数字图像的小波变换和混沌序列加密 |
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| 引用本文： | 张定会,许赛赛,余日,张建伟.彩色数字图像的小波变换和混沌序列加密[J].计算机测量与控制,2011,19(6). |
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| 作者姓名： | 张定会 许赛赛 余日 张建伟 |
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| 作者单位： | 上海理工大学,光电信息与计算机工程学院,上海,200093 |
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| 摘 要： | 根据彩色数字图像的基本特点,运用数字图像加密和解密原理,将离散小波变换和离散混沌序列有机地结合起来,研究了彩色数字图像的小波变换和混沌序列的加密和解密方法;对原始图像进行加密实质是利用混沌序列对其低频小波系数进行加密,对加密图像进行解密实质是利用混沌序列对其低频小波系数进行解密;研究的彩色数字图像加解密方法,为彩色数字图像加密提供了一种有效可行的方法,不仅能够使加密彩色数字图像具有理想的加密效果,而且能够保证加密彩色数字图像足够的安全。
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| 关 键 词： | 彩色数字图像 加解密 小波变换 混沌 |
Color Digital Image Encryption Using Wavelet Transform and Chaotic Sequence |
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| Zhang Dinghui,Xu Saisai,Yu Ri,Zang Jianwei.Color Digital Image Encryption Using Wavelet Transform and Chaotic Sequence[J].Computer Measurement & Control,2011,19(6). |
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| Authors: | Zhang Dinghui Xu Saisai Yu Ri Zang Jianwei |
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| Affiliation: | Zhang Dinghui,Xu Saisai,Yu Ri,Zang Jianwei(School of Optical-Electrical Information and Computer Engineering,Shanghai University Science and Technology,Shanghai 200093,China) |
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| Abstract: | According to the basic characteristic of color digital image,using the encrypting and decrypting theorem of digital image,organically combining discrete wavelet transform with discrete chaotic sequence,the encryption and decryption of color digital image based on wavelet transform and chaotic sequence has been studied.The encryption of original images is to use chaotic sequences to encrypt its low frequency wavelet coefficients.The decryption of encrypted images is to use chaotic sequences to decrypt its lo... |
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| Keywords: | color digital image encryption and decryption wavelet transform chaos |
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