Optical multiple-image encryption based on phase encoding algorithm in the Fresnel transform domain

2012 ◽  
Vol 44 (7) ◽  
pp. 2238-2244 ◽  
Author(s):  
Jian-Ji Huang ◽  
Hone-Ene Hwang ◽  
Chun-Yuan Chen ◽  
Ching-Mu Chen
Keyword(s):  
Image Encryption ◽  
Transform Domain ◽  
Phase Encoding ◽  
Multiple Image ◽  
Fresnel Transform

Wavelength multiplexing multiple-image encryption using cascaded phase-only masks in the Fresnel transform domain

2011 ◽  
Vol 50 (5) ◽  
pp. 710 ◽  
Author(s):  
Hsuan T. Chang ◽  
Hone-Ene Hwang ◽  
Cheng-Ling Lee ◽  
Mn-Ta Lee
Keyword(s):  
Image Encryption ◽  
Transform Domain ◽  
Multiple Image ◽  
Wavelength Multiplexing ◽  
Fresnel Transform

Multiple-image encryption by using robust chaotic map in wavelet transform domain

Optik ◽  
2018 ◽  
Vol 171 ◽  
pp. 277-286 ◽  
Author(s):  
Chun-Lai Li ◽  
Hong-Min Li ◽  
Fu-Dong Li ◽  
Du-Qu Wei ◽  
Xuan-Bing Yang ◽  
...  
Keyword(s):  
Wavelet Transform ◽  
Image Encryption ◽  
Chaotic Map ◽  
Transform Domain ◽  
Multiple Image

Silhouette-free multiple image encryption using coherent superposition and Fresnel transform

Optik ◽  
2020 ◽  
Vol 224 ◽  
pp. 165498
Author(s):  
Guangyu Luan ◽  
Zhengguang Chen ◽  
Caojun Huang
Keyword(s):  
Image Encryption ◽  
Coherent Superposition ◽  
Multiple Image ◽  
Fresnel Transform

scholarly journals Angle Multiplexing Optical Image Encryption in the Fresnel Transform Domain Using Phase-Only Computer-Generated Hologram

Photonics ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 1 ◽  
Author(s):  
Hsuan T. Chang ◽  
Yao-Ting Wang ◽  
Chien-Yu Chen
Keyword(s):  
Computer Simulation ◽  
Image Quality ◽  
Image Encryption ◽  
Correlation Coefficients ◽  
Security Level ◽  
Transform Domain ◽  
Computer Generated Hologram ◽  
Fresnel Transform ◽  
Simulation Results ◽  
Optical Image Encryption

We propose an angle multiplexing method for optics-based image encryption using a phase-only computer-generated hologram (POCGH) in the tilted Fresnel transform (TFrT) domain. Modified Gerchberg-Saxton algorithms, based on the three types of rotation manipulation in both the hologram and reconstruction planes, are used with their corresponding TFrT parameters to extract the phase-only functions (POFs) of the target images. All the extracted POFs are then phase-modulated and summed to obtain the final POCGH, which is capable of multiplexing and avoiding overlap in the reconstructed images. The computer simulation results show that the images corresponding to the various rotation manipulations at the hologram and image reconstruction planes can be successfully restored with high correlation coefficients. Due to the encrypted nature of the multiplexed images, a higher system security level can be achieved, as the images can only be correctly displayed when all the required parameters in the TFrT are available. The angle sensitivity on the image quality for each manipulation is also investigated.

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