Partial Image Encryption of Medical Images Based on Various Permutation Techniques
Kiran, Bidare Divakarachari Parameshachari, H. T. Panduranga, Rocío Pérez de Prado · Apple Academic Press eBooks · 2022
Medical image security becomes more and more important. Full image encryption is not necessary in the field of medical because partial amount of encryption is enough to provide the security. Here Proposed is a partial image encryption of medical images, which uses different permutation techniques. Proposed technique mainly consists of permutation and diffusion process. Original medical image divided into nonoverlapping blocks with the help of block size table. Then position of each pixel in every blocks are shuffled according to chaotic sequence generated from the chaotic map system and predefined block size table. In the diffusion process, based on basic intensity image (BII) and different permutation technique, the mapping operation apply to get partially encrypted medical 224images. Experiential results show that proposed method provide more security with less complexity and computational time.