It is a high quality data encryption technology that the data are encrypted by double-random phase encoding with uniformly distributed random phase in both the input and Fourier planes.

• 在研究双随机相位数据加密技术的基础上,结合印刷技术和全息技术的特点,提出了一种基于傅里叶变换印刷全息标识防伪方法。