Specifications

transform domain
Authors: Liansheng, Sui1 ; Meiting, Xin1 ; Ailing, Tian2/隋连升;;;
Author affiliation: 1 School of Computer Science and Engineering, Xi'An University of
Technology, Xi'an 710048, China
2 Shannxi Province Key Lab of Thin Film Technology and Optical Test, Xi'An Technological
University, Xi'an 710032, China
Corresponding author: Liansheng, S. ([e-mail])
Source title: Optics Letters
Abbreviated source title: Opt. Lett.
Volume: 38
Issue: 11
Issue date: June 1, 2013
Publication year: 2013
Pages: 1996-1998
Language: English
ISSN: 01469592
E-ISSN: 15394794
CODEN: OPLEDP
Document type: Journal article (JA)
Publisher: Optical Society of America, 2010 Massachusetts Avenue NW, Washington, DC
20036-1023, United States
Abstract: A multiple-image encryption scheme is proposed based on the phase retrieval
process and phase mask multiplexing in the fractional Fourier transform domain. First, each
original gray-scale image is encoded into a phase only function by using the proposed phase
retrieval process. Second, all the obtained phase functions are modulated into an interim, which
is encrypted into the final ciphertext by using the fractional Fourier transform. From a plaintext
image, a group of phase masks is generated in the encryption process. The corresponding
decrypted image can be recovered from the ciphertext only with the correct phase mask group in
the decryption process. Simulation results show that the proposed phase retrieval process has
high convergence speed, and the encryption algorithm can avoid cross-talk; in addition, its
encrypted capacity is considerably enhanced. © 2013 Optical Society of America.
Number of references: 13
Main heading: Cryptography
Controlled terms: Image processing - Multiplexing - Phase shifters - Security of data
Uncontrolled terms: Convergence speed - Decryption process - Encryption algorithms
- Fractional Fourier transforms - Gray-scale images - Multiple-image encryptions -
Phase functions - Phase retrieval
Classification code: 703.1 Electric Networks - 716 Telecommunication; Radar, Radio and
Television - 717 Optical Communication - 718 Telephone Systems and Related
Technologies; Line Communications - 723 Computer Software, Data Handling and
Applications - 723.2 Data Processing and Image Processing
DOI: 10.1364/OL.38.001996
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.