Cryptography

Fourier analysis

Discrete cosine transform

Mathematics

Hartley transform

Fourier transform

Operating system

Algorithm

Image (mathematics)

Mathematical analysis

Encryption

Computer science

Theoretical computer science

Computer vision

Cryptosystem

Fractional Fourier transform

Plaintext

Signal Processing

A new multi-image encryption scheme based on quaternion discrete fractional Hartley transform (QDFrHT) and an improved pixel adaptive diffusion is pro…

Multi-image compression-encryption scheme based on quaternion discrete fractional Hartley transform and improved pixel adaptive diffusion