no code implementations • 25 May 2023 • Michael T. McCann, Hyungjin Chung, Jong Chul Ye, Marc L. Klasky
This paper explores the use of score-based diffusion models for Bayesian image reconstruction.
1 code implementation • ICCV 2023 • Berk Iskender, Marc L. Klasky, Yoram Bresler
In particular, in the case of dynamic tomography, only a single projection at a single view angle may be available at a time, making the problem severely ill-posed.
no code implementations • 10 Mar 2023 • Michael T. McCann, Elena Guardincerri, Samuel M. Gonzales, Lauren A. Misurek, Jennifer L. Schei, Marc L. Klasky
We tackle material identification without energy resolution, allowing standard X-ray systems to provide material identification information without requiring additional hardware.
1 code implementation • CVPR 2023 • Hyungjin Chung, Dohoon Ryu, Michael T. McCann, Marc L. Klasky, Jong Chul Ye
Diffusion models have emerged as the new state-of-the-art generative model with high quality samples, with intriguing properties such as mode coverage and high flexibility.
2 code implementations • 29 Sep 2022 • Hyungjin Chung, Jeongsol Kim, Michael T. McCann, Marc L. Klasky, Jong Chul Ye
Diffusion models have been recently studied as powerful generative inverse problem solvers, owing to their high quality reconstructions and the ease of combining existing iterative solvers.
no code implementations • 21 Apr 2022 • Berk Iskender, Marc L. Klasky, Yoram Bresler
In dynamic tomography the object undergoes changes while projections are being acquired sequentially in time.
no code implementations • 2 Dec 2021 • Maliha Hossain, Balasubramanya T. Nadiga, Oleg Korobkin, Marc L. Klasky, Jennifer L. Schei, Joshua W. Burby, Michael T. McCann, Trevor Wilcox, Soumi De, Charles A. Bouman
Radiography is often used to probe complex, evolving density fields in dynamic systems and in so doing gain insight into the underlying physics.
no code implementations • 15 Oct 2021 • Alexander N. Sietsema, Michael T. McCann, Marc L. Klasky, Saiprasad Ravishankar
In this paper, we compare idealized versions of these two approaches with synthetic experiments.
no code implementations • 11 Dec 2020 • Michael T. McCann, Marc L. Klasky, Jennifer L. Schei, Saiprasad Ravishankar
To estimate scatter for a new radiograph, we adaptively fit a scatter model to a small subset of the training data containing the radiographs most similar to it.