Search Results for author: Doga Gursoy

Found 7 papers, 5 papers with code

Digital autofocusing of a coded-aperture Laue diffraction microscope

no code implementations15 Aug 2022 Doga Gursoy, Dina Sheyfer, Michael Wojcik, Wenjun Liu, Jonathan Tischler

To provide optimal depth resolution with a coded-aperture Laue diffraction microscope, an accurate position of the coded-aperture and its scanning geometry need to be known.

CodEx: A Modular Framework for Joint Temporal De-blurring and Tomographic Reconstruction

no code implementations11 Nov 2021 Soumendu Majee, Selin Aslan, Doga Gursoy, Charles A. Bouman

The method is a synergistic combination of a novel acquisition method with a novel non-convex Bayesian reconstruction algorithm.

Computed Tomography (CT) Deblurring

Joint ptycho-tomography with deep generative priors

1 code implementation20 Sep 2020 Selin Aslan, Zhengchun Liu, Viktor Nikitin, Tekin Bicer, Sven Leyffer, Doga Gursoy

In our simulations, we demonstrate that our proposed framework with parameter tuning and learned priors generates high-quality reconstructions under limited and noisy measurement data.

Denoising Retrieval

Distributed optimization for nonrigid nano-tomography

1 code implementation11 Jul 2020 Viktor Nikitin, Vincent De Andrade, Azat Slyamov, Benjamin J. Gould, Yuepeng Zhang, Vandana Sampathkumar, Narayanan Kasthuri, Doga Gursoy, Francesco De Carlo

Resolution level and reconstruction quality in nano-computed tomography (nano-CT) are in part limited by the stability of microscopes, because the magnitude of mechanical vibrations during scanning becomes comparable to the imaging resolution, and the ability of the samples to resist beam damage during data acquisition.

Distributed Optimization Optical Flow Estimation

Near, far, wherever you are: simulations on the dose efficiency of holographic and ptychographic coherent imaging

1 code implementation16 Aug 2019 Ming Du, Doga Gursoy, Chris Jacobsen

Different studies in x-ray microscopy have arrived at conflicting conclusions about the dose efficiency of imaging modes involving the recording of intensity distributions in the near (Fresnel regime) or far (Fraunhofer regime) field downstream of a specimen.

Image and Video Processing Applied Physics Medical Physics

Three dimensions, two microscopes, one code: automatic differentiation for x-ray nanotomography beyond the depth of focus limit

2 code implementations24 May 2019 Ming Du, Youssef S. G. Nashed, Saugat Kandel, Doga Gursoy, Chris Jacobsen

Conventional tomographic reconstruction algorithms assume that one has obtained pure projection images, involving no within-specimen diffraction effects nor multiple scattering.

Image and Video Processing Applied Physics Optics

TomoGAN: Low-Dose Synchrotron X-Ray Tomography with Generative Adversarial Networks

3 code implementations20 Feb 2019 Zhengchun Liu, Tekin Bicer, Rajkumar Kettimuthu, Doga Gursoy, Francesco De Carlo, Ian Foster

We present \TOMOGAN{}, a denoising technique based on generative adversarial networks, for improving the quality of reconstructed images for low-dose imaging conditions.


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