Search Results for author: Ross J. Harder

Found 5 papers, 2 papers with code

AutoPhaseNN: Unsupervised Physics-aware Deep Learning of 3D Nanoscale Bragg Coherent Diffraction Imaging

1 code implementation28 Sep 2021 YuDong Yao, Henry Chan, Subramanian Sankaranarayanan, Prasanna Balaprakash, Ross J. Harder, Mathew J. Cherukara

The problem of phase retrieval, or the algorithmic recovery of lost phase information from measured intensity alone, underlies various imaging methods from astronomy to nanoscale imaging.

Astronomy Retrieval

Three-dimensional Coherent X-ray Diffraction Imaging via Deep Convolutional Neural Networks

no code implementations26 Feb 2021 Longlong Wu, Shinjae Yoo, Ana F. Suzana, Tadesse A. Assefa, Jiecheng Diao, Ross J. Harder, Wonsuk Cha, Ian K. Robinson

The trained ML model can rapidly provide an immediate result with high accuracy which could benefit real-time experiments, and the predicted result can be further refined with transfer learning.

Retrieval Transfer Learning

Real-time 3D Nanoscale Coherent Imaging via Physics-aware Deep Learning

no code implementations16 Jun 2020 Henry Chan, Youssef S. G. Nashed, Saugat Kandel, Stephan Hruszkewycz, Subramanian Sankaranarayanan, Ross J. Harder, Mathew J. Cherukara

Phase retrieval, the problem of recovering lost phase information from measured intensity alone, is an inverse problem that is widely faced in various imaging modalities ranging from astronomy to nanoscale imaging.

Astronomy Retrieval

Real-time sparse-sampled Ptychographic imaging through deep neural networks

1 code implementation15 Apr 2020 Mathew J. Cherukara, Tao Zhou, Youssef Nashed, Pablo Enfedaque, Alex Hexemer, Ross J. Harder, Martin V. Holt

Ptychography has rapidly grown in the fields of X-ray and electron imaging for its unprecedented ability to achieve nano or atomic scale resolution while simultaneously retrieving chemical or magnetic information from a sample.

Real-time coherent diffraction inversion using deep generative networks

no code implementations7 Jun 2018 Mathew J. Cherukara, Youssef S. G. Nashed, Ross J. Harder

Phase retrieval, or the process of recovering phase information in reciprocal space to reconstruct images from measured intensity alone, is the underlying basis to a variety of imaging applications including coherent diffraction imaging (CDI).

Retrieval

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