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) Strange attractors for the PWL fractional-order system while fixing a = 1, b = 0.25; (a) q = 0.75; (b) q = 1.