Collaborative research · published at ICIMTH 2025 · 2025

3D colour medical image encryption

A 3D hyperchaotic map, an S-box and a discrete wavelet transform for secure colour medical image encryption.

Status: Published · ICIMTH 2025
Venue: Stud Health Technol Inform 328
NPCR: 99.57%
UACI: 36.17%

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Result

99.57%NPCR · pixels that change when one input pixel changes

36.17%UACI · average intensity change between cipher images

Method

3D hyperchaotic map
Permutation
Diffusion
S-box
DWT

Medical images have strong correlations between neighbouring pixels, which an encryption scheme has to destroy thoroughly. A 3D hyperchaotic map drives permutation (shuffling pixel positions) and diffusion (changing pixel values, strengthened with an S-box), followed by a discrete wavelet transform. Chaotic systems are extremely sensitive to initial conditions, which gives a very large key space.

Paper

Abbasi SF, Ahmad R, Mukherjee T, Ding X, Bai L, Pournik O, Arvanitis TN. A Novel and Secure 3D Colour Medical Image Encryption Technique Using 3D Hyperchaotic Map, S-box and Discrete Wavelet Transform. Studies in Health Technology and Informatics. 2025;328:268–272. Presented at ICIMTH 2025. Read the paper →