Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Fully phase image encryption based on two-step-only quadrature phase-shifting interferometry and fractional Fourier transform

JIN Wei-min,MA Li-hong,LIU Jian(Institute of Information Optics,Zhejiang Normal University,Jinhua,Zhejiang 321004,China)  
A novel fully phase image encryption technique based on two-step-only quadrature phase-shifting digital holography and double random phase encoding in fractional Fourier transform(FRT) domain is proposed,in which only two quadrature phase holograms are required and neither reference-wave intensity nor object-wave intensity measurement is needed.A primary amplitude image is modulated to a fully phase image,and then the fully phase image is encoded into two quadrature digital holograms by using double random-phase masks(RPMS) encoding in the input and fractional Fourier domain transform planes,respectively.The clear primary image can be recovered by simple algorithm with the right keys.The feasibility and validity of this technique has been proved by simulation experiments.And the robustness against occlusion and noise attacks,as well as the effect of the reference wave intensity to image encryption and decryption,has also been investigated.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved