1. 长安大学 电子与控制工程学院,陕西,西安,710064
2. 空军工程大学 航空工程学院,陕西,西安,710038
纸质出版:2019
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朱礼亚, 张曦, 张亮. 基于并行压缩感知与混沌映射的图像加密方案设计[J]. 微电子学与计算机, 2019, 36(10): 96-102.
ZHU Li-ya, ZHANG Xi, ZHANG Liang. Design of image encryption scheme based on parallel compressive sensing and chaotic map[J]. 2019, 36(10): 96-102.
为实现灰度图像的同步加密与压缩
将并行压缩感知技术与混沌理论相结合
提出了一种兼顾压缩性能与安全性能的加密方案.明文图像的小波系数矩阵在经过Arnold置乱之后
利用受控的随机分块权重测量矩阵进行线性压缩
然后进行量化和双向扩散得到密文图像.在加密过程中
Lorenz混沌系统产生的伪随机序列作为置乱、构造测量矩阵以及扩散过程的密码流.通过置乱稀疏系数及构造具备良好重建性能的测量矩阵
方案的压缩性能得到有效提升.通过一系列安全性能分析
验证了方案的可靠性及鲁棒性.
To encrypt and compress the gray image simultaneously
a novel encryption scheme based on parallel compressive sensing and chaotic theory is proposed
which can form a balance between compression and security performance. Firstly
the wavelet coefficients of plain image are scrambled by Arnold permutation algorithm
and then compressed by the key-controlled partial random block weighing matrix. Finally
the cipher image is obtained after quantization and diffusion. Lorenz chaotic system is introduced to generate the key stream for permutation
construction of measurement matrix and diffusion. Via scrambling the sparse coefficients and constructing the measurement matrix with high reconstruction performance
the compression performance of scheme is enhanced. Moreover
the security and robustness are demonstrated by the security analyses.
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