Fig 1.
Fractional-order cellular neural network Lyapunov exponential map.
Fig 2.
3-D projection of chaotic attractors for fractional-order cellular neural networks.
Fig 3.
Bifurcation diagram of staged composite chaotic map.
Fig 4.
Encryption flow chart.
Fig 5.
Plaintext, ciphertext and decrypted image of Lena, bird, cameraman, peppers.
Fig 6.
Decryption with different keys.
Fig 7.
Plaintext and ciphertext histogram.
Fig 8.
Correlation comparison of plaintext ciphertext.
Table 1.
Correlation between plain image and adjacent pixels of ciphertext image.
Table 2.
Information entropy comparison result.
Table 3.
NPCR and UACI comparison results.
Fig 9.
Cutting attack resistance.
Fig 10.
Noise attack resistance.
Table 4.
Standard histogram deviation comparison result.
Table 5.
Execution time with the same operating environment (unit: s).
Table 6.
Encryption time and comparisons.