Results 81 to 90 of about 414,567 (183)

Parameter optimization for 3D-reconstruction from XFEL diffraction patterns based on Fourier slice matching

Biophysics and Physicobiology, 2019
Single-particle analysis (SPA) by X-ray free electron laser (XFEL) is a novel method that can observe biomolecules and living tissue that are difficult to crystallize in a state close to nature.
Miki Nakano, Osamu Miyashita, Florence Tama   +2 more
doaj   +1 more source

Enhanced Terahertz Phase Retrieval Imaging by Unequal Spaced Measurement [PDF]

, 2022
Chungui Xing, Feng Qi, Shuxu Guo
openalex   +1 more source

Non-Stationary Platform Inverse Synthetic Aperture Radar Maneuvering Target Imaging Based on Phase Retrieval

Sensors, 2018
As a powerful signal processing tool for imaging moving targets, placing radar on a non-stationary platform (such as an aerostat) is a future direction of Inverse Synthetic Aperture Radar (ISAR) systems. However, more phase errors are introduced into the
Hongyin Shi, Saixue Xia, Qi Qin, Ting Yang, Zhijun Qiao   +4 more
doaj   +1 more source

Deep learning phase retrieval in x-ray single-particle imaging for biological macromolecules

Machine Learning: Science and Technology
Phase retrieval is an important optimization problem that occurs, for example, in the analysis of coherent diffraction patterns from isolated proteins. All iterative algorithms employed for phase retrieval in this context require some a priori knowledge ...
Alfredo Bellisario, Tomas Ekeberg
doaj   +1 more source

Compressive Phase Retrieval

Imaging and Applied Optics, 2011
We discuss and provide experimental results on the application of compressive sampling to the problem of quantitative tomographic phase reconstruction. Article not available.
George Barbastathis, Justin W. Lee, Lei Tian, Se Baek Oh   +3 more
openaire   +2 more sources

PhasePack: A Phase Retrieval Library [PDF]

, 2017
Rohan Chandra, Ziyuan Zhong, Justin Hontz, Val McCulloch, Christoph Studer, Tom Goldstein   +5 more
openalex   +1 more source

Phase retrieval for nilpotent groups [PDF]

, 2022
Hartmut Führ, Vignon Oussa
openalex   +1 more source

Robust Initialization Estimator and its Application in Solving Quadratic Equations

IEEE Access, 2019
In many non-convex optimization-based signal recovery tasks, a good initial point is essential for the performance of the optimization process. One seeks to start the point from a small local region surrounding the targeted signal.
Kaihui Liu, Linxiao Yang, Jiandong Xie
doaj   +1 more source

A Novel Direction-of-Arrival Estimation via Phase Retrieval with Unknown Sensor Gain-and-Phase Errors

Sensors, 2019
In signal array processing, high-resolution direction-of-arrival (DOA) estimation algorithms work well on the assumption that the system models are perfect. However, in practicality, there are imperfect system models in which sensor gain-and-phase errors
Lingwen Zhang, Siliang Wu, Ao Guo, Wenkao Yang   +3 more
doaj   +1 more source

Phase retrieval problems in x-ray physics [PDF]

, 2015
C. Homann
openalex   +1 more source