4D Cloud Scattering Tomography
We derive computed tomography (CT) of a time-varying volumetric scattering object, using a small number of moving cameras. We focus on passive tomography of dynamic clouds, as clouds have a major effect on the Earth's climate. State of the art scattering CT assumes a static object. Existing 4D CT methods rely on a linear image formation model and often on significant priors. In this paper, the angular and temporal sampling rates needed for a proper recovery are discussed. Spatiotemporal CT is achieved using gradient-based optimization, which accounts for the correlation time of the dynamic object content. We demonstrate this in physics-based simulations and on experimental real-world data.
Code (1)
Tasks
Computed Tomography (CT)ObjectSimilar Papers 제목 키워드 기반
Airborne Three-Dimensional Cloud Tomography
We seek to sense the three dimensional (3D) volumetric distribution of scatterers in a heterogenous medium. An important case study for such a medium is the atmosphere. Atmospheric contents and their role in Earth's radi…
3DeepCT: Learning Volumetric Scattering Tomography of Clouds
We present 3DeepCT, a deep neural network for computed tomography, which performs 3D reconstruction of scattering volumes from multi-view images. The architecture is dictated by the stationary nature of atmospheric c…
3D Reconstruction3D Scattering Tomography by Deep Learning with Architecture Tailored to Cloud Fields
We present 3DeepCT, a deep neural network for computed tomography, which performs 3D reconstruction of scattering volumes from multi-view images. Our architecture is dictated by the stationary nature of atmospheric cloud…
3D ReconstructionSpatiotemporal tomography based on scattered multiangular signals and its application for resolving evolving clouds using moving platforms
We derive computed tomography (CT) of a time-varying volumetric translucent object, using a small number of moving cameras. We particularly focus on passive scattering tomography, which is a non-linear problem. We demons…
Computed Tomography (CT)ObjectVariable Imaging Projection Cloud Scattering Tomography
Scattering-based computed tomography (CT) recovers a heterogeneous volumetric scattering medium using images taken from multiple directions. It is a nonlinear problem. Prior art mainly approached it by explicit physics-…
Computed Tomography (CT)