Research Article
An Image Encryption Algorithm Based on Hyperchaotic System and Variable-Step Josephus Problem
Figure 6
The histogram original images and their cipher images. (a) Histogram of the cameraman 256 × 256 image. (b) Histogram of the cipher cameraman 256 × 256 image. (c) Histogram of the brain 256 × 256 image. (d) Histogram of the cipher brain 256 × 256 image.
(a) |
(b) |
(c) |
(d) |