Compressive Holographic Video
This enables recording subtle vibrations and tracking small particles within 5 ms, addressing high-speed video acquisition challenges in imaging macroscopic, fast-moving objects.
The paper tackled the problem of 4D reconstruction in space and time from a single coded image by combining compressive holography and coded exposure techniques, achieving a 10× temporal super resolution with multiple depths recovery.
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 $10\times$ 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.