no code implementations • ECCV 2020 • Tamar Loeub, Aviad Levis, Vadim Holodovsky, Yoav Y. Schechner
An important natural signal of this tendency is the optical extinction coefficient, as a function of altitude in a cloud.
no code implementations • 9 Mar 2024 • Roi Ronen, Ilan Koren, Aviad Levis, Eshkol Eytan, Vadim Holodovsky, Yoav Y. Schechner
We demonstrate the approach in simulations and on real-world data, and indicate the relevance of 3D recovery and uncertainty to precipitation and renewable energy.
no code implementations • 11 Oct 2023 • Aviad Levis, Andrew A. Chael, Katherine L. Bouman, Maciek Wielgus, Pratul P. Srinivasan
One proposed mechanism that produces flares is the formation of compact, bright regions that appear within the accretion disk and close to the event horizon.
no code implementations • 8 Sep 2023 • Brandon Zhao, Aviad Levis, Liam Connor, Pratul P. Srinivasan, Katherine L. Bouman
The effects of such fields appear in many scientific computer vision settings, ranging from refraction due to transparent cells in microscopy to the lensing of distant galaxies caused by dark matter in astrophysics.
no code implementations • CVPR 2022 • Aviad Levis, Pratul P. Srinivasan, Andrew A. Chael, Ren Ng, Katherine L. Bouman
In this work, we propose BH-NeRF, a novel tomography approach that leverages gravitational lensing to recover the continuous 3D emission field near a black hole.
no code implementations • ICCV 2021 • Aviad Levis, Daeyoung Lee, Joel A. Tropp, Charles F. Gammie, Katherine L. Bouman
We are motivated by the task of imaging the stochastically evolving environment surrounding black holes, and demonstrate how flow parameters can be estimated from sparse interferometric measurements used in radio astronomical imaging.
no code implementations • 22 May 2020 • Aviad Levis, Yoav Y. Schechner, Anthony B. Davis, Jesse Loveridge
Our motivation is 3D volumetric probing of vertically-developed convectively-driven clouds that are ill-served by current methods in operational passive remote sensing.
no code implementations • CVPR 2018 • Aviad Levis, Yoav Y. Schechner, Ronen Talmon
This enables geometric self-calibration in imaging of transparent objects.
no code implementations • CVPR 2017 • Aviad Levis, Yoav Y. Schechner, Anthony B. Davis
Scattering effects in images, including those related to haze, fog and appearance of clouds, are fundamentally dictated by microphysical characteristics of the scatterers.
no code implementations • 7 Dec 2015 • Vadim Holodovsky, Yoav Y. Schechner, Anat Levin, Aviad Levis, Amit Aides
We formulate tomography that handles arbitrary orders of scattering, using a monte-carlo model.
no code implementations • ICCV 2015 • Aviad Levis, Yoav Y. Schechner, Amit Aides, Anthony B. Davis
We seek to sense the three dimensional (3D) volumetric distribution of scatterers in a heterogenous medium.