Search Results for author: Shirin Shoushtari

Found 9 papers, 1 papers with code

Overcoming Distribution Shifts in Plug-and-Play Methods with Test-Time Training

no code implementations15 Mar 2024 Edward P. Chandler, Shirin Shoushtari, Jiaming Liu, M. Salman Asif, Ulugbek S. Kamilov

A common issue with the learned models is that of a performance drop when there is a distribution shift between the training and testing data.

Image Reconstruction

PnP Restoration with Domain Adaptation for SANS

no code implementations15 Mar 2024 Shirin Shoushtari, Edward P. Chandler, Jialiang Zhang, Manjula Senanayake, Sai Venkatesh Pingali, Marcus Foston, Ulugbek S. Kamilov

The prior in PR-SANS is initially trained on a set of generic images and subsequently fine-tuned using a limited amount of experimental SANS data.

Domain Adaptation

Convergence of Nonconvex PnP-ADMM with MMSE Denoisers

no code implementations30 Nov 2023 Chicago Park, Shirin Shoushtari, Weijie Gan, Ulugbek S. Kamilov

This paper presents a theoretical explanation for the observed stability of PnP-ADMM based on the interpretation of the CNN prior as a minimum mean-squared error (MMSE) denoiser.

FLAIR: A Conditional Diffusion Framework with Applications to Face Video Restoration

no code implementations26 Nov 2023 Zihao Zou, Jiaming Liu, Shirin Shoushtari, YuBo Wang, Weijie Gan, Ulugbek S. Kamilov

Face video restoration (FVR) is a challenging but important problem where one seeks to recover a perceptually realistic face videos from a low-quality input.

Deblurring Image Enhancement +3

Prior Mismatch and Adaptation in PnP-ADMM with a Nonconvex Convergence Analysis

no code implementations29 Sep 2023 Shirin Shoushtari, Jiaming Liu, Edward P. Chandler, M. Salman Asif, Ulugbek S. Kamilov

Our second set of numerical results considers a simple and effective domain adaption strategy that closes the performance gap due to the use of mismatched denoisers.

Domain Adaptation Image Super-Resolution

Robustness of Deep Equilibrium Architectures to Changes in the Measurement Model

no code implementations1 Nov 2022 Junhao Hu, Shirin Shoushtari, Zihao Zou, Jiaming Liu, Zhixin Sun, Ulugbek S. Kamilov

Deep model-based architectures (DMBAs) are widely used in imaging inverse problems to integrate physical measurement models and learned image priors.

DOLPH: Diffusion Models for Phase Retrieval

no code implementations1 Nov 2022 Shirin Shoushtari, Jiaming Liu, Ulugbek S. Kamilov

Phase retrieval refers to the problem of recovering an image from the magnitudes of its complex-valued linear measurements.

Retrieval

Deep Model-Based Architectures for Inverse Problems under Mismatched Priors

no code implementations26 Jul 2022 Shirin Shoushtari, Jiaming Liu, Yuyang Hu, Ulugbek S. Kamilov

While the empirical performance and theoretical properties of DMBAs have been widely investigated, the existing work in the area has primarily focused on their performance when the desired image prior is known exactly.

Online Deep Equilibrium Learning for Regularization by Denoising

1 code implementation25 May 2022 Jiaming Liu, Xiaojian Xu, Weijie Gan, Shirin Shoushtari, Ulugbek S. Kamilov

However, the dependence of the computational/memory complexity of the measurement models in PnP/RED on the total number of measurements leaves DEQ impractical for many imaging applications.

Denoising

Cannot find the paper you are looking for? You can Submit a new open access paper.