Publication
Application of a New Sensing Principle for Photoacoustic Imaging of Point Absorbers
Publications associées (49)
Asymmetric phase modulation of light with parity-symmetry broken metasurfaces
Karim Achouri, Jean-Yves Duboz
The design of wavefront-shaping devices is conventionally approached using real-frequency modeling. However, since these devices interact with light through radiative channels, they are by default non-Hermitian objects having complex eigenvalues (poles and ...
Washington20232.5 Hz sample rate time-domain near-infrared optical tomography based on SPAD-camera image tissue hemodynamics
Edoardo Charbon, Scott Anthony Lindner, Martin Wolf, Jingjing Jiang
Tim-domain near-infrared optical tomography (TD NIROT) techniques based on diffuse light were gaining performance over the last years. They are capable of imaging tissue at several centimeters depth and reveal clinically relevant information, such as tissu ...
OPTICAL SOC AMER2022Polarization-sensitive optics diffraction tomography
Demetri Psaltis, Joowon Lim, Elizabeth Elena Antoine, Amirhossein Saba Shirvan, Ahmed Ayoub
Polarization of light has been widely used as a contrast mechanism in two-dimensional (2D) microscopy and also in some three-dimensional (3D) imaging modalities. In this paper, we report the 3D tomographic reconstruction of the refractive index (RI) tensor ...
OPTICAL SOC AMER2021Fourier Sampling in Signal Processing and Numerical Linear Algebra
This thesis focuses on developing efficient algorithmic tools for processing large datasets. In many modern data analysis tasks, the sheer volume of available datasets far outstrips our abilities to process them. This scenario commonly arises in tasks incl ...
EPFL2020Dynamic time domain near-infrared optical tomography based on a SPAD camera
Edoardo Charbon, Scott Anthony Lindner, Martin Wolf, Jingjing Jiang
In many clinical applications it is relevant to observe dynamic changes in oxygenation. Therefore the ability of dynamic imaging with time domain (TD) near-infrared optical tomography (NIROT) will be important. But fast imaging is a challenge. The data acq ...
2020A Fourier-accelerated volume integral method for elastoplastic contact
Jean-François Molinari, Guillaume Anciaux, Lucas Henri Galilée Frérot
The contact of solids with rough surfaces plays a fundamental role in physical phenomena such as friction, wear, sealing, and thermal transfer. However, its simulation is a challenging problem due to surface asperities covering a wide range of length-scale ...
2019Data-driven Measurement Designs for Magnetic Resonance Imaging
Despite being a powerful medical imaging technique which does not emit any ionizing radiation, magnetic resonance imaging (MRI) always had the major problem of long scanning times that can take up to an hour depending on the application. It also requires u ...
EPFL2019Imaging from Echoes: On Inverse Problems in Ultrasound
Ultrasound (US) imaging is currently living a revolution. On the one hand, ultrafast US imaging, a novel way of acquiring and producing US images, has paved the way to several advanced imaging modes, e.g. shear-wave elastography, ultrafast Doppler imaging ...
EPFL2019Super Resolution Phase Retrieval for Sparse Signals
Martin Vetterli, Juri Ranieri, Gilles Baechler, Amina Chebira, Miranda Krekovic
In a variety of fields, in particular those involving imaging and optics, we often measure signals whose phase is missing or has been irremediably distorted. Phase retrieval attempts to recover the phase information of a signal from the magnitude of its Fo ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2018Compressive Multiplexing of Ultrasound Signals
Jean-Philippe Thiran, Yves Wiaux, Dimitris Perdios, Marcel Arditi, Adrien Georges Jean Besson
High-quality 3D ultrasound (US) imaging requires dense matrix-array probes with thousands of elements and necessitates an unrealistic number of coaxial cables to connect such probes to back-end systems. To address this issue, many techniques have been deve ...
IEEE2018