Optical Image Encryption Algorithm Based on Chaotic Tinker Bell Map with Random Phase Masks in Fourier Domain

2020 ◽  
pp. 249-262
Author(s):  
Sachin ◽  
Archana ◽  
Phool Singh
Keyword(s):  
Image Encryption ◽  
Random Phase ◽  
Optical Image ◽  
Encryption Algorithm ◽  
Fourier Domain ◽  
Optical Image Encryption ◽  
Image Encryption Algorithm

Optical image encryption algorithm based on hyper-chaos and public-key cryptography

2020 ◽  
Vol 127 ◽  
pp. 106171 ◽  
Author(s):  
Yujia Liu ◽  
Zhaoguo Jiang ◽  
Xiping Xu ◽  
Fuqi Zhang ◽  
Jiahong Xu
Keyword(s):  
Image Encryption ◽  
Public Key Cryptography ◽  
Optical Image ◽  
Encryption Algorithm ◽  
Public Key ◽  
Optical Image Encryption ◽  
Image Encryption Algorithm

A No Interference Optical Image Encryption by a Fresnel Diffraction and a Fourier Transformation

2012 ◽  
Vol 459 ◽  
pp. 461-464
Author(s):  
Huai Sheng Wang
Keyword(s):  
Image Encryption ◽  
Digital Image ◽  
Fourier Transformation ◽  
Random Phase ◽  
Fresnel Diffraction ◽  
Optical Image ◽  
Phase Mask ◽  
Phase Plate ◽  
Encrypted Image ◽  
Optical Image Encryption

A no interference optical image encryption is put forward in this paper. The encrypting process is composed of a Fresnel diffraction and a Fourier transformation. A digital image coded with a random phase plate first takes a Fresnel diffraction. The diffraction function is enlarged and coded with another random phase mask. At last the enlarged function undergoes a Fourier transformation. The real part of the transformed function is defined as an encrypted image. In decrypting process, first the encrypted image takes an inverse Fourier transformation. Then the upper left corner of the transformed function is intercepted. According to the space inversion of the transformed function, if the intercepted function takes an inverse Fresnel diffraction, the original digital image can be restored from the final diffraction function. Because there is no interference process in encryption and decryption, the optical system is relatively simple and the quality of restored image is very good

Optical image encryption with multistage and multichannel fractional Fourier-domain filtering

2001 ◽  
Vol 26 (16) ◽  
pp. 1242 ◽  
Author(s):  
Shutian Liu ◽  
Quanlin Mi ◽  
Banghe Zhu
Keyword(s):  
Image Encryption ◽  
Optical Image ◽  
Fourier Domain ◽  
Optical Image Encryption

scholarly journals Optical Image Encryption Based on Chaotic Baker Map and Double Random Phase Encoding

2013 ◽  
Vol 31 (15) ◽  
pp. 2533-2539 ◽  
Author(s):  
Ahmed M. Elshamy ◽  
Ahmed N. Z. Rashed ◽  
Abd El-Naser A. Mohamed ◽  
Osama S. Faragalla ◽  
Yi Mu ◽  
...  
Keyword(s):  
Image Encryption ◽  
Random Phase ◽  
Optical Image ◽  
Phase Encoding ◽  
Chaotic Baker Map ◽  
Double Random Phase Encoding ◽  
Random Phase Encoding ◽  
Optical Image Encryption ◽  
Baker Map

scholarly journals Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform Domain

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Hukum Singh ◽  
A. K. Yadav ◽  
Sunanda Vashisth ◽  
Kehar Singh
Keyword(s):  
Image Encryption ◽  
Mean Squared Error ◽  
Random Phase ◽  
Optical Image ◽  
Phase Mask ◽  
Digital Implementation ◽  
Key Space ◽  
Fresnel Transform ◽  
Encrypted Images ◽  
Optical Image Encryption

We have carried out a study of optical image encryption in the Fresnel transform (FrT) domain, using a random phase mask (RPM) in the input plane and a phase mask based on devil’s vortex toroidal lens (DVTL) in the frequency plane. The original images are recovered from their corresponding encrypted images by using the correct parameters of theFrTand the parameters of DVTL. The use of a DVTL-based structured mask enhances security by increasing the key space for encryption and also aids in overcoming the problem of axis alignment associated with an optical setup. The proposed encryption scheme is a lensless optical system and its digital implementation has been performed using MATLAB 7.6.0 (R2008a). The scheme has been validated for a grayscale and a binary image. The efficacy of the proposed scheme is verified by computing mean-squared-error (MSE) between the recovered and the original images. We have also investigated the scheme’s sensitivity to the encryption parameters and examined its robustness against occlusion and noise attacks.

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