Abstract
In this paper, we propose a method for optical image encryption based on fractional Fourier transform (FRFT) and Arnold transform (ART) in phase-shifting digital holography. An input image is first divided into eight bit planes, and each bit plane is encrypted based on double random-phase masks and FRFT. Complex amplitude for the object is retrieved by phase-shifting digital holography in the hologram plane. The real and imaginary parts of the retrieved complex amplitudes for the 0th-7th bit planes are further encrypted using ART algorithm. Numerical results are shown to demonstrate the feasibility and effectiveness of the proposed technique. The sensitivity of security parameters, such as function orders in FRFT and iteration number in ART method, is also analyzed.
| Original language | English |
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| Title of host publication | Fourth International Conference on Experimental Mechanics |
| Volume | 7522 |
| DOIs | |
| Publication status | Published - 1 Dec 2010 |
| Externally published | Yes |
| Event | 4th International Conference on Experimental Mechanics - Singapore, Singapore Duration: 18 Nov 2009 → 20 Nov 2009 |
Conference
| Conference | 4th International Conference on Experimental Mechanics |
|---|---|
| Country/Territory | Singapore |
| City | Singapore |
| Period | 18/11/09 → 20/11/09 |
Keywords
- Arnold transform (ART)
- Bit plane
- Double random-phase masks
- Fractional Fourier transform (FRFT)
- Phase-shifting digital holography
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering