An image encryption scheme based on three-dimensional Brownian motion and chaotic system |
Cipher and decrypted images under Gaussian noise with different level of noise: cipher images of (a) mean = 0, variance = 0.0001; (b) mean = 0, variance = 0.0003; (c) mean = 0, variance = 0.0005; decrypted images of (d) mean = 0, variance = 0.0001; (e) mean = 0, variance = 0.0003; (f) mean = 0, variance = 0.0005. |