中文摘要：

提出了利用菲涅尔变换实现多图像隐藏的相位调制系统。该系统能够通过所设计的纯位相板，从单一载体图像中恢复出多个秘密图像。计算机模拟结果验证了在不同复用容量下迭代算法的有效性。借助于增加衍射级和引入微调量的方法，提高了系统性能。对系统的安全性作了讨论。

英文摘要：

The multiple-image hiding system based on the Fresnel transform is proposed in the paper. In the hiding process, the multiple secret images are hidden by the phase only masks（POMs） which are generated with the chosen iterative algorithm,and the images can be reconvered in the different axes locations in the reasel domain with the corresponding position keys. The simulations results demonstrate the high quality of the revered multiple-image and the total multiplexing capacity of the system. The security of the system based on the phase keys and the additional keys is analyzed as well.