A novel color image encryption scheme using fractional-order hyperchaotic system and DNA sequence operations
Zhang Li-Min, Sun Ke-Hui †, Liu Wen-Hao, He Shao-Bo
       

(color online) The Lyapunov exponents of the PWL fractional-order system (a) q = 0.95, b = 0.25, ; (b) a = 1, q = 0.95, ; (c) a = 1, b = 0.25, .