Fractional Hartley transform applied to optical image encryption
Fractional Hartley transform applied to optical image encryption
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DOI：
10.1088/1742-6596/274/1/012041
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
C. Jimenez;Cesar Torres;L. Mattos
中科院分区：
文献类型：
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作者：
C. Jimenez;Cesar Torres;L. Mattos
为了寻找一维分数Hartley变换的逆变换，最近重新定义了一维分数Hartley变换的二维推广，在此基础上提出了一种新的图像加密方法。它比Hartley变换有一个优点，因为它的分数阶也可以用作附加密钥，当然，这增强了图像的安全性。只有当所有这些密钥都正确时，才能很好地解密图像。计算机模拟也证实了所提出的方法的可能性。
A new method for image encryption is introduced on the basis of two-dimensional (2-D) generalization of 1-D fractional Hartley transform that has been redefined recently in search of its inverse transform We encrypt the image by two fractional orders and random phase codes. It has an advantage over Hartley transform, for its fractional orders can also be used as addictional keys, and that, of course, strengthens image security. Only when all of these keys are correct, can the image be well decrypted. Computer simulations are also perfomed to confirm the possibilty of proposed method.