The possibility of using a digital micromirror device (DMD) for implementing the optical encryption with time integration in quasimonochromatic spatially incoherent light is considered. An experimental setup for optical registration of image to be encrypted on a digital camera is presented. Images containing text and graphic information are encrypted and successfully decrypted using inverse filtering. The use of time integration in optical encryption makes it possible to reduce the noise caused by binarization of holograms display on DMD that contains encryption keys and to increase the diffraction efficiency of the encryption process.

中文翻译：

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一种时间积分光加密数字微镜器件的应用

考虑了使用数字微镜器件 (DMD) 在准单色空间非相干光中实现具有时间积分的光学加密的可能性。提出了一种用于在数码相机上对要加密的图像进行光学配准的实验装置。包含文本和图形信息的图像使用逆向过滤进行加密和成功解密。在光学加密中使用时间积分可以减少由包含加密密钥的 DMD 上显示的全息图的二值化引起的噪声，并提高加密过程的衍射效率。