I work on computational imaging for science. In particular, I develop methods for carefully using priors, such as AI and scientific knowledge, to push the limits of conventional optics.

I'm currently a Postdoctoral Fellow at MIT and IAIFI, working with Prof. Bill Freeman. I obtained my PhD from Caltech, where I was advised by Prof. Katie Bouman. Previously, I graduated from Princeton University summa cum laude, with a major in Computer Science and minor in Statistics & Machine Learning.

I am currently on the academic job market for tenure-track faculty positions.

News

Oct 2025 I led the IAIFI panel at the Boston Diffusion Day workshop.

Sep 2025 I joined MIT as a postdoc! Officially I am an NSF IAIFI Fellow and Tayebati Postdoctoral Fellow.

Jul 2025 I delivered a keynote at the ML4Astro workshop.

Jul 2025 I taught the EHT Black-Hole Imaging course at the ICCP Summer School. Click here for the course materials.

Jan 2025 Check out my article on Seeing Beyond the Blur with Generative AI in the ACM’s XRDS Magazine!

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Highlighted Publications

Dynamic Black-hole Emission Tomography with Physics-informed Neural Fields

Berthy T. Feng, Andrew A. Chael, David Bromley, Aviad Levis, William T. Freeman, Katherine L. Bouman

In submission, 2026

Webpage coming soon

Visual Surface Wave Elastography: Revealing Subsurface Physical Properties via Visible Surface Waves

Alexander C. Ogren*, Berthy T. Feng*, Jihoon Ahn, Katherine L. Bouman, Chiara Daraio

ICCV, 2025

Paper Code

Neural Approximate Mirror Maps for Constrained Diffusion Models

Berthy T. Feng, Ricardo Baptista, Katherine L. Bouman

ICLR, 2025

Paper Code

Event-horizon-scale Imaging of M87* under Different Assumptions via Deep Generative Image Priors

Berthy T. Feng, Katherine L. Bouman, William T. Freeman

The Astrophysical Journal (ApJ), 2024

Webpage Paper

Variational Bayesian Imaging with an Efficient Surrogate Score-based Prior

Berthy T. Feng, Katherine L. Bouman

Transactions on Machine Learning Research (TMLR), 2024

Webpage Paper Code

Score-Based Diffusion Models as Principled Priors for Inverse Imaging

Berthy T. Feng, Jamie Smith, Michael Rubinstein, Huiwen Chang, Katherine L. Bouman, William T. Freeman

ICCV, 2023

Webpage Paper Code

Visual Vibration Tomography: Estimating Interior Material Properties from Monocular Video

Berthy T. Feng, Alexander C. Ogren, Chiara Daraio, Katherine L. Bouman

CVPR, 2022

Oral, Best Paper Finalist (top 1.6% of accepted papers)

Webpage Paper Code

Other Publications

U-DAVI: Uncertainty-aware Diffusion-prior-based Amortized Variational Inference for Image Reconstruction

Ayush Varney, Katherine L. Bouman, Berthy T. Feng

ICASSP, 2026

InverseBench: Benchmarking Plug-and-Play Diffusion Models for Scientific Inverse Problems

Hongkai Zheng, Wenda Chu, Bingliang Zhang, Zihui Wu, Austin Wang, Berthy T. Feng, Caifeng Zou, Yu Sun, Nikola Borislavov Kovachki, Zachary E. Ross, Katherine L. Bouman, Yisong Yue

ICLR, 2025

Spotlight (top 5.1% of submitted papers)

Paper

Provable Probabilistic Imaging Using Score-Based Generative Priors

Yu Sun, Zihui Wu, Yifan Chen, Berthy T. Feng, Katherine L. Bouman

IEEE Transactions on Computational Imaging (TCI), 2024

Paper

Score-based Diffusion Models for Photoacoustic Tomography Image Reconstruction

Sreemanti Dey, Snigdha Saha, Berthy T. Feng, Manxiu Cui, Laure Delisle, Oscar Leong, Lihong V. Wang, Katherine L. Bouman

ICASSP, 2024

Paper

Gaussian process regression as a surrogate model for the computation of dispersion relations

Alexander C. Ogren, Berthy T. Feng, Katherine L. Bouman, Chiara Daraio

Computer Methods in Applied Mechanics and Engineering (CMAME), 2024

Paper

Towards Unique and Informative Captioning of Images

Zeyu Wang, Berthy T. Feng, Karthik Narasimhan, Olga Russakovsky

ECCV, 2020

Paper Code

Learning Bandwidth Expansion Using Perceptually-Motivated Loss

Berthy T. Feng, Zeyu Jin, Jiaqi Su, Adam Finkelstein

ICASSP, 2019

Paper Code