基于球面波照射的单随机相位掩模光学图像加密

Optical image encryption using only one random phase mask based on spherical wave illumination

针对双随机相位编码加密方法,提出用球面波的自带相位因子进行图像加密,既能获得同样的效果,又能减少相位掩模数量,简化系统设置,并用计算机仿真实验证明了其可行性。

In connection with the method of double random phase encoding, a simple encryption method is proposed in this paper. The characteristic of this method is： under the spherical wave illumination, using only one random phase mask and the phase factor of spherical wave to realize image encryption. Computer simulation indicated the feasibility of the proposed technique.