中文摘要：

一幅灰度图像的相息图被隐藏于一幅宿主图像中,该相息图是采用基于相息图迭代的双随机相位加密技术得到的.由于采用仅含有位相信息的相息图作为待加密灰度图像信息的载体,因而与隐藏图像同时具有振幅和相位信息的情况相比较,需要隐藏的信息量大大降低,从而可在对宿主图像影响较小的情况下,提高提取信息的质量;并可有效地提高信息提取时的光学效率,并且对二元图像信息的隐藏也同样适用.水印图像的剪切对隐藏信息提取质量的影响也被分析,模拟实验结果证明了所采用方法的有效性.

英文摘要：

In this paper, a new method of hiding gray-images in a host image by using double-random phase encryption method based on kinoform iterative is presented, through which not only the volume to be hidden can be compressed, but also the optical efficiency in the information extracting can be improved. The decoding process of which will not rely on the original host image, and this method can also be applied to the hiding of binary-images. In the last part of this paper, the efficiency and the robustness of this method is analyzed. Computer simulations are presented to illustrate the effectiveness of this method.