7 papers
Generative Plug and Play: Posterior Sampling for Inverse Problems
Charles A. Bouman, Gregery T. Buzzard
Over the past decade, Plug-and-Play (PnP) has become a popular method for reconstructing images using a modular framework consisting of a forward and prior model. The great strengt…
Dynamic DH-MBIR for Phase-Error Estimation from Streaming Digital-Holography Data
Ali G. Sheikh, Casey J. Pellizzari, Sherman J. Kisner +2
Directed energy applications require the estimation of digital-holographic (DH) phase errors due to atmospheric turbulence in order to accurately focus the outgoing beam. These pha…
X-ray Spectral Estimation using Dictionary Learning
Wenrui Li, Venkatesh Sridhar, K. Aditya Mohan +5
As computational tools for X-ray computed tomography (CT) become more quantitatively accurate, knowledge of the source-detector spectral response is critical for quantitative syste…
Ringing Artifact Reduction Method for Ultrasound Reconstruction Using Multi-Agent Consensus Equilibrium
Abdulrahman M. Alanazi, Singanallur Venkatakrishnan, Gregery T. Buzzard +1
Non-destructive characterization of multi-layered structures that can be accessed from only a single side is important for applications such as well-bore integrity inspection. Exis…
Sparse-View CT Reconstruction using Recurrent Stacked Back Projection
Wenrui Li, Gregery T. Buzzard, Charles A. Bouman
Sparse-view CT reconstruction is important in a wide range of applications due to limitations on cost, acquisition time, or dosage. However, traditional direct reconstruction metho…
Projected Multi-Agent Consensus Equilibrium for Ptychographic Image Reconstruction
Qiuchen Zhai, Brendt Wohlberg, Gregery T. Buzzard +1
Ptychography is a computational imaging technique using multiple, overlapping, coherently illuminated snapshots to achieve nanometer resolution by solving a nonlinear phase-field r…