A New Image Encryption Scheme Based on Hybrid Chaotic Maps

Figure 11

Schematic illustration: (a) the encryption processes, and (b) the decryption processes. Note that DWT, LL, LH, HL, HH Inv. Diffusion, Inv. Permutation, and IDWTstand for, Discrete Wavelet Transform, low-low, low-high, high-low, high-high, inverse diffusion, inverse permutation, and inverse Discrete Wavelet Transform, respectively.

(a)

(b)