%0 Journal Article
%T Amplitude Image Optical Encryption Based on Two-step-only Quadrature Phase-shifting Interferometry<br>基于两步正交相移干涉的振幅图像光学加密技术
%A ZENG Da-kui
%A MA Li-hong
%A LIU Jian
%A JIN Wei-min
%A <br>曾大奎
%A 马利红
%A 刘健
%A 金伟民
%J 光子学报
%D 2012
%I 
%X A novel optical image encryption is proposed based on two-step-only quadrature phase-shifting interferometry. Only two interferograms are needed to reconstruct a zero-order-and twin-image-free hologram in this phase-shifting digital holography interference. Such technique precludes the need from recording either the reference wave or the object wave intensity. The object wavefront propagates with two Fresnel transforms in the light path, combined with the double random phase encoding. The following is that introducing zero and л/2 phase into reference waves respectively and recording two digital holograms as encrypted image. As long as the correct key is given in the decryption, a clear original image can be reconstructed by a simple calculation. The feasibility and its robustness against occlusion and noise attacks are verified by a series of numerical simulations.
%K Encryption
%K Phase-shifting interferometry
%K Digital holography
%K The Fresnel transform
%K Random phase<br>加密
%K 相移干涉
%K 数字全息
%K 菲涅尔变换
%K 随机相位
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=1D36885FD7A8294B7FE4FAACF6E037DC&yid=99E9153A83D4CB11&vid=2001E0D53B7B80EC&iid=CA4FD0336C81A37A&sid=AA76E167F386B6B3&eid=228A710F49B6CE58&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=28