An Image Encryption Algorithm Based on Hyperchaotic System and Variable-Step Josephus Problem

Figure 8

The cipher images and the corresponding decrypted images under noise attack. (a) Cipher image under 0.01 noise intensity. (b) Cipher image under 0.05 noise intensity. (c) Cipher image under 0.1 noise intensity. (d) Decrypted image under 0.01 noise intensity. (e) Decrypted image under 0.05 noise intensity. (f) Decrypted image under 0.1 noise intensity.

(a)

(b)

(c)

(d)

(e)

(f)