Ghost imaging (GI) is a technology of nonlocal optical imaging, which is widely used in the field of information encryption. However, there are some inherent shortcomings in the encryption process, such as imperfect security and low imaging precision. To solve these problems, we propose a camouflaged encryption mechanism based on sparse decomposition of principal component orthogonal basis and ghost imaging (CSP-GI). Unlike the traditional encryption method, there are two-level keys and ciphertexts. The information of the secret image is hidden in the camouflaged image to improve the security of the system. The use of the sparse decomposition of principal component orthogonal basis expands the information content of encrypted transmission, improves the accuracy of reconstructed image, and reduces the reconstruction time. The simulation and experimental results show that the proposed method not only has good security and robustness but also reduces reconstruction time.

中文翻译：

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基于主成分正交基稀疏分解和幻影成像的伪装加密机制

重影成像（GI）是一种非局部光学成像技术，已广泛应用于信息加密领域。但是，加密过程存在一些固有的缺陷，例如安全性不完善和成像精度低。为了解决这些问题，我们提出了一种基于主成分正交基稀疏分解和幻影成像（CSP-GI）的伪装加密机制。与传统的加密方法不同，它具有两级密钥和密文。秘密图像的信息被隐藏在伪装的图像中，以提高系统的安全性。主成分正交基稀疏分解的使用扩展了加密传输的信息内容，提高了重建图像的精度，并减少了重建时间。