Double image encryption based on random phase encoding in the fractional Fourier domain
Double image encryption based on random phase encoding in the fractional Fourier domain
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DOI：
10.1364/oe.15.016067
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发表时间：
2007-11-26
期刊：
影响因子：
3.8
通讯作者：
Wang, Yue
中科院分区：
文献类型：
--
作者：
Tao, Ran;Xin, Yi;Wang, Yue
提出了一种新的图像加密方法，利用分数傅立叶域的随机相位编码将两幅图像加密成一幅具有平稳白色分布的加密图像。通过应用由分数阶、随机相位掩模和像素置乱算子组成的正确密钥，可以在没有串扰的情况下恢复两幅原始图像。解密过程对数据丢失具有鲁棒性。具有较大密钥空间的基于相位的图像比基于幅度的图像对密钥和干扰更敏感。当噪声扰动发生时，像素加扰操作提高了解密图像的质量。新的方法是通过仿真验证。(c)2007年，美国光学学会。
A novel image encryption method is proposed by utilizing random phase encoding in the fractional Fourier domain to encrypt two images into one encrypted image with stationary white distribution. By applying the correct keys which consist of the fractional orders, the random phase masks and the pixel scrambling operator, the two primary images can be recovered without cross-talk. The decryption process is robust against the loss of data. The phase-based image with a larger key space is more sensitive to keys and disturbances than the amplitude-based image. The pixel scrambling operation improves the quality of the decrypted image when noise perturbation occurs. The novel approach is verified by simulations. (c) 2007 Optical Society of America.