数字全息的菲涅耳再现算法和角谱算法，包括频谱滤波。-Fresnel digital holographic reproduction algorithms and angular spectrum of algorithms, including spectral filtering.

基于菲涅尔域的双随机相位编码图像加密方案，利用角谱传播法实现-Based on double random phase encoding Fresnel domain image encryption scheme to achieve the use of angular spectrum propagation method