IAIFI Colloquium - Friday 9/26/2025

[Thomas Bradford]

Hi all,

Next Friday (September 26, 2025), the NSF Institute for Artificial Intelligence and Fundamental Interactions (https://iaifi.org) will host its next public colloquium. Please find the details below. We hope you can join us!

Best,

Thomas

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Details:

2:00pm ET Friday, September 26, 2025

IAIFI Public Colloquium (https://iaifi.org/events.html)

Advancing Scientific Computational Imaging through Data-driven and Physics-based Priors

Berthy Feng, Postdoctoral Fellow, IAIFI

Watch on YouTube: https://www.youtube.com/channel/UCueoFcGm_15kSB-wDd4CBZA

Abstract: The core idea of computational imaging is to supplement limited observable data with human-imposed assumptions, or priors. However, incorporating priors in the imaging process poses computational challenges, including efficiently expressing sophisticated priors, appropriately balancing priors with observations, and gently enforcing physics constraints. My work addresses such challenges with principled methods for bringing informative assumptions into scientific computational imaging. In this talk, I will focus on black-hole imaging problems through the lens of both data-driven priors and physics-based priors.

On the data-driven side, I will present work on score-based priors, including a posterior-estimation method and results of re-imagining the famous M87 black hole from real data with score-based priors. On the physics-based side, I will show we have been able to tackle extremely under-determined imaging problems by enforcing physics constraints, including the problem of single-viewpoint dynamic tomography of emission near a black hole. Finally, I will address the intersection of AI and physics by presenting neural approximate mirror maps, a way to enforce physics constraints on generative models.

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Thomas Bradford

Project Coordinator, IAIFI