实现了两步相移的基于随机相位掩码的图像加密和解密-To achieve a two-step phase shift mask image based on random phase encryption and decryption

针对随机相位编码光学图像加密技术，简要回顾了它的国内外研究进展，并讨论了它的发展态势。-Research and progress of optical image encryption using random phase mask present research situation and development of image encryption using random phase mask at home and abroad are reviewed. At the sam