An optical image cryptosystem based on Hartley transform in the Fresnel transform domain

In this chapter, a fragile watermarking scheme based on One-Dimensional Discrete Hartley Transform (1D-DHT) has been proposed to verify the authenticity of color images. One-Dimensional Discrete Hartley Transform (1D-DHT) converts each 1 x 2 sub-matrix of pixel components into transform domain. Watermark (along with a message digest MD) bits are embedded into the transformed components in varying proportion. To minimize the quality distortion, genetic algorithm (GA) based optimization is applied which yields the optimized component corresponding to each embedded component. Applying One-Dimensional Inverse Discrete Hartley Transform (1D-IDHT) on 1 x 2 sub-matrices of embedded components re-generates the pixel components in spatial domain. The reverse approach is followed by the recipient to retrieve back the watermark (along with the message digest MD) which in turn is compared against the re-computed Message Digest (MD') for authentication. Simulation results demonstrate that the proposed technique offers variable payload and less distortion as compared to existing schemes.

Security enrichment of optical image cryptosystem based on superposition technique using fractional Hartley and gyrator transform domains deploying equal modulus decomposition

Optical and Quantum Electronics ◽

10.1007/s11082-019-1854-4 ◽

2019 ◽

Vol 51 (5) ◽

Cited By ~ 3

Author(s):

Poonam Lata Yadav ◽

Hukum Singh

Keyword(s):

Optical Image ◽

Equal Modulus Decomposition ◽

Gyrator Transform ◽

Superposition Technique ◽

Image Cryptosystem ◽

Transform Domains

Color image cryptosystem using Fresnel diffraction and phase modulation in an expanded fractional Fourier transform domain

Laser Physics ◽

10.1088/1555-6611/aab240 ◽

2018 ◽

Vol 28 (5) ◽

pp. 055402 ◽

Cited By ~ 3

Author(s):

Hang Chen ◽

Zhengjun Liu ◽

Qi Chen ◽

Walter Blondel ◽

Pierre Varis

Keyword(s):

Fourier Transform ◽

Phase Modulation ◽

Fractional Fourier Transform ◽

Color Image ◽

Fresnel Diffraction ◽

Transform Domain ◽

Image Cryptosystem ◽

Fourier Transform Domain

Multiple-information security system using key image phase and chaotic random phase encoding in Fresnel transform domain

Optics and Lasers in Engineering ◽

10.1016/j.optlaseng.2019.105810 ◽

2020 ◽

Vol 124 ◽

pp. 105810 ◽

Cited By ~ 4

Author(s):

Muhammad Rafiq Abuturab

Keyword(s):

Information Security ◽

Random Phase ◽

Security System ◽

Transform Domain ◽

Phase Encoding ◽

Random Phase Encoding ◽

Fresnel Transform

A Three-Dimensional Optical Image Cryptosystem Based on Integral Imaging

2015 10th International Conference on P2P, Parallel, Grid, Cloud and Internet Computing (3PGCIC) ◽

10.1109/3pgcic.2015.79 ◽

2015 ◽

Author(s):

Liu Yiqun

Keyword(s):

Three Dimensional ◽

Optical Image ◽

Integral Imaging ◽

Image Cryptosystem

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

Photonics ◽

10.3390/photonics7010001 ◽

2019 ◽

Vol 7 (1) ◽

pp. 1 ◽

Cited By ~ 2

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.