Wang Zihao, Spinoulas Leonidas, He Kuan, Tian Lei, Cossairt Oliver, Katsaggelos Aggelos K, Chen Huaijin
Opt Express. 2017 Jan 9;25(1):250-262. doi: 10.1364/OE.25.000250.
Compressed sensing has been discussed separately in spatial and temporal domains. Compressive holography has been introduced as a method that allows 3D tomographic reconstruction at different depths from a single 2D image. Coded exposure is a temporal compressed sensing method for high speed video acquisition. In this work, we combine compressive holography and coded exposure techniques and extend the discussion to 4D reconstruction in space and time from one coded captured image. In our prototype, digital in-line holography was used for imaging macroscopic, fast moving objects. The pixel-wise temporal modulation was implemented by a digital micromirror device. In this paper we demonstrate 10× temporal super resolution with multiple depths recovery from a single image. Two examples are presented for the purpose of recording subtle vibrations and tracking small particles within 5 ms.
压缩感知已在空间和时间域中分别进行了讨论。压缩全息术作为一种方法被引入，它允许从单个二维图像在不同深度进行三维层析重建。编码曝光是一种用于高速视频采集的时间压缩感知方法。在这项工作中，我们将压缩全息术和编码曝光技术相结合，并将讨论扩展到从一个编码捕获图像进行时空四维重建。在我们的原型中，数字同轴全息术用于对宏观快速移动物体进行成像。逐像素时间调制由数字微镜器件实现。在本文中，我们展示了从单个图像进行多深度恢复的10倍时间超分辨率。给出了两个例子，用于记录微妙振动和在5毫秒内跟踪小颗粒。
