Gray images embedded in a color image and encrypted with FRFT and Region Shift Encoding methods

Gray images embedded in a color image and encrypted with FRFT and Region Shift Encoding methods
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将灰度图像嵌入到彩色图像中并使用 FRFT 和区域移位编码方法进行加密

DOI:
10.1016/j.optcom.2010.01.009
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发表时间:
2010-05
影响因子:
2.4
通讯作者:
Daomu Zhao
Daomu Zhao
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Linfei Chen,;Fan Ge;Daomu Zhao

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本文提出了一种新的多重图像加密和水印技术。可以在放大的彩色图像的三个通道中对多个灰度图像进行水印。采用邻域像素值加减法实现盲水印,从而在提取水印图像时不需要原始宿主彩色图像。灰度图像在隐藏前采用FRFT和区域移位编码技术进行加密,以提高安全性。分析了该算法对遮挡攻击和噪声攻击的稳健性。并进行了计算机仿真,验证了该方法的可行性。
In this paper, we have proposed a new multiple image encryption and watermarking technique. Several gray images can be watermarked in the three channels of an enlarged color image. The neighbor pixel value addition and subtraction algorithm is used to realize blind watermarking, therefore the original host color image does not need in extraction the watermark image. The gray images are encrypted with FRFT and Region Shift Encoding techniques before hiding to enhance the security. The robustness against occlusion attacks and noise attacks are also analyzed. And some computer simulations are presented to verify the possibility.
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