Publications associées à Phase-contrast X-ray imaging

BMAT: An open-source BIDS managing and analysis tool

Meritxell Bach Cuadra, Francesco La Rosa, Maxence Charles F Wynen, Benoît Macq

Magnetic Resonance Imaging (MRI) is an established technique to study in vivo neurological disorders such as Multiple Sclerosis (MS). To avoid errors on MRI data organization and automated processing, a standard called Brain Imaging Data Structure (BIDS) h ...

ELSEVIER SCI LTD2022

Optical Diffraction Tomography Using Nearly In-Line Holography with a Broadband LED Source

Demetri Psaltis, Abhijit Roy, Ahmed Ayoub

We present optical tomography methods for a 3D refractive index reconstruction of weakly scattering objects using LED light sources. We are able to record holograms by minimizing the optical path difference between the signal and reference beams while sepa ...

MDPI2022

Spray-Assisted Formation of Micrometer-Sized Emulsions

Esther Amstad, Mathias Steinacher

Emulsion drops with defined sizes are frequently used to conduct chemical reactions on picoliter scales or as templates to form microparticles. Despite tremendous progress that has been achieved in the production of emulsions, the high throughput formation ...

AMER CHEMICAL SOC2022

Temporal Talbot effect of optical dark pulse trains

Camille Sophie Brès, Jianqi Hu, Jiaye Wu

The temporal Talbot effect describes the periodic self-imaging of an optical pulse train along dispersive propagation. This is well studied in the context of bright pulse trains, where identical or multiplied pulse trains with uniform bright waveforms can ...

OPTICAL SOC AMER2022

In-operando dynamic visualization of flow through porous preforms based on X-ray phase contrast imaging

Véronique Michaud, Baris Çaglar, Helena Luisa Teixido Pedarros

Direct visualization is often sought to elucidate flow patterns and validate models to predict the filling kinetics during processes whereby a liquid resin infiltrates a textile porous preform. Here, X-ray phase contrast interferometry is evaluated to imag ...

2021

Stochasticity helps to navigate rough landscapes: comparing gradient-descent-based algorithms in the phase retrieval problem

Lenka Zdeborová, Francesca Mignacco

In this paper we investigate how gradient-based algorithms such as gradient descent (GD), (multi-pass) stochastic GD, its persistent variant, and the Langevin algorithm navigate non-convex loss-landscapes and which of them is able to reach the best general ...

IOP PUBLISHING LTD2021

Spectral self-imaging of optical orbital angular momentum modes

Camille Sophie Brès, Jianqi Hu, Yin Chen, Yujie Chen

The Talbot self-imaging effect is mostly present in the forms of space or time, or in the frequency domain by the Fourier duality. Here, we disclose a new spectral Talbot effect arising in optical orbital angular momentum (OAM) modes. The effect occurs in ...

AIP Publishing2021

NTIRE 2021 Depth Guided Image Relighting Challenge

Sabine Süsstrunk, Majed El Helou, Ruofan Zhou, Radu Timofte

Image relighting is attracting increasing interest due to its various applications. From a research perspective, image relighting can be exploited to conduct both image normalization for domain adaptation, and also for data augmentation. It also has multip ...

2021

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Phase-contrast X-ray imaging

BMAT: An open-source BIDS managing and analysis tool

Optical Diffraction Tomography Using Nearly In-Line Holography with a Broadband LED Source

Spray-Assisted Formation of Micrometer-Sized Emulsions

Impact of Brightness on Glare Perception when Using Shading Fabrics

Temporal Talbot effect of optical dark pulse trains

Imaging with Coherent X-rays: From the Early Synchrotron Tests to SYNAPSE

In-operando dynamic visualization of flow through porous preforms based on X-ray phase contrast imaging

Stochasticity helps to navigate rough landscapes: comparing gradient-descent-based algorithms in the phase retrieval problem

Spectral self-imaging of optical orbital angular momentum modes

NTIRE 2021 Depth Guided Image Relighting Challenge

Graph Chatbot

Chattez avec Graph Search

Spray-Assisted Formation of Micrometer-Sized Emulsions

Imaging with Coherent X-rays: From the Early Synchrotron Tests to SYNAPSE

Stochasticity helps to navigate rough landscapes: comparing gradient-descent-based algorithms in the phase retrieval problem

In-operando dynamic visualization of flow through porous preforms based on X-ray phase contrast imaging

Spectral self-imaging of optical orbital angular momentum modes

NTIRE 2021 Depth Guided Image Relighting Challenge

BMAT: An open-source BIDS managing and analysis tool

Optical Diffraction Tomography Using Nearly In-Line Holography with a Broadband LED Source

Impact of Brightness on Glare Perception when Using Shading Fabrics

Temporal Talbot effect of optical dark pulse trains