A new kind of double image encryption by using a cutting spectrum in the 1-D fractional Fourier transform domains

A new kind of double image encryption by using a cutting spectrum in the 1-D fractional Fourier transform domains
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一种在一维分数阶傅里叶变换域中使用切割谱的新型双图像加密

DOI:
10.1016/j.optcom.2009.01.002
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发表时间:
2009-04
影响因子:
2.4
通讯作者:
Liu, Shutian
Liu, Shutian
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Liu, Zhengjun;Li, Qiuming;Dai, Jingmin;Sun, Xiaogang;Ahmad, Muhammad Ashfaq;Liu, Shutian

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为了同时隐藏两幅图像,提出了一种基于一维分数傅里叶变换的图像加密算法。当分数阶数接近于1时,频域中的能量主要集中在谱的中心部分。利用位于x方向或y方向中间部分的半幅谱,可以得到较好的图像恢复效果。采用切割操作以将两个光谱联合收割机组合。采用双随机相位编码对图像进行加密。数值仿真结果验证了该算法的有效性。
Based on 1-D fractional Fourier transform, we proposed an image encryption algorithm in order to hide two images simultaneously. When the fractional order is closed to 1, most energy in frequency domain is centralized in the center part of spectrum. The image can be recovered acceptable by using a half of spectrum, which locates in the middle part at x-direction or y-direction. Cutting operation is employed in order to combine two spectra. Double random phase encoding is employed for image encryption. The corresponding numerical simulations are performed to demonstrate the validity and efficiency of the algorithm.
基于交换和反交换规则的图像加密方案
DOI: 10.1016/j.optcom.2007.07.045
发表时间: 2007-11
影响因子: 2.4
作者:
Liu, Zhengjun;Ahmad, Muhammad Ashfaq;Liu, Shutian
通讯作者: Liu, Shutian
DOI: 10.1016/j.optcom.2006.07.024
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影响因子: 2.4
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DOI: 10.1364/ol.32.000478
发表时间: 2007-03
期刊: Optics letters
影响因子: 3.6
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DOI: 10.1364/oe.15.010253
发表时间: 2007-08-06
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影响因子: 3.8
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通讯作者: Javidi, Bahram
DOI: 10.1016/j.optcom.2007.07.012
发表时间: 2007-11-01
影响因子: 2.4
作者:
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通讯作者: Singh, Kehar