In this paper, to enhance the security of double random phase encoding (DRPE), Lorenz system and bidimensional empirical mode decomposition (BEMD) are introduced into an image encryption process. By means of BEMD, the original grayscale image is decomposed into three sub-images, then they are diffused and confused by using the pseudorandom sequences generated by Lorenz system. At last, the three result images are encoded by using DRPE, we obtain the color ciphered image. Thorough experimental tests are carried out with detailed analysis, demonstrating the feasibility and high security of the new scheme.

中文翻译：

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基于二维经验模式分解和双随机相位编码的混沌图像加密

为了提高双随机相位编码（DRPE）的安全性，将Lorenz系统和二维经验模式分解（BEMD）引入到图像加密过程中。借助BEMD，将原始灰度图像分解为三个子图像，然后使用Lorenz系统生成的伪随机序列对其进行扩散和混淆。最后，使用DRPE对三个结果图像进行编码，得到彩色加密图像。进行了详尽的实验测试并进行了详细分析，证明了该新方案的可行性和高度安全性。