Optical image encryption based on two-dimensional N-parameter fractional Fourier transform

2009 ◽  
Author(s):  
Haiying Zhang ◽  
Qiwen Ran ◽  
Yu Xiao ◽  
Jing Ma ◽  
Liying Tan ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Image Encryption ◽  
Fractional Fourier Transform ◽  
Optical Image ◽  
Two Dimensional ◽  
Optical Image Encryption

scholarly journals Color image encryption based on chaotic compressed sensing and two-dimensional fractional Fourier transform

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Xingyuan Wang ◽  
Yining Su
Keyword(s):  
Fourier Transform ◽  
Compressed Sensing ◽  
Image Encryption ◽  
Fractional Fourier Transform ◽  
Color Image ◽  
Random Phase ◽  
Phase Mask ◽  
Two Dimensional ◽  
Measurement Matrix ◽  
Color Image Encryption

Abstract Combining the advantages of structured random measurement matrix and chaotic structure, this paper introduces a color image encryption algorithm based on a structural chaotic measurement matrix and random phase mask. The Chebyshev chaotic sequence is used in the algorithm to generate the flip permutation matrix, the sampling subset and the chaotic cyclic matrix for constructing the structure perceptual matrix and the random phase mask. The original image is compressed and encrypted simultaneously by compressed sensing, and re-encrypted by two-dimensional fractional Fourier transform. Simulation experiments show the effectiveness and reliability of the algorithm.

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