An Encryption System of Virtual Optical Lens Imaging Based on Coupled Sawtooth Chaos Map

In allusion to the fact that spatiotemporal chaotic system produces a large number of uncorrelated pseudo-random sequences and is very sensitive to the chaotic initial value and control parameters,a method to generate the random template of encryption system of virtual optical lens imaging based on spatiotemporal chaos of coupled sawtooh map is proposed. The method is based on cross-coupled map lattice with the local evolution equation using sawtooth chaos map. Experimental results show that when the value of coupling coefficient e is less than 0. 01,the image grid model based on cross coupling of the sawtooth chaotic systems can generate chaotic sequences with uniform distribution. The simulation result revealed that the key of this encryption scheme has high precision and this encryption scheme can resist brute force attack in certain key space.