Publications related to 3D Reconstruction Of Wave-Propagated Point Sources From Boundary Measurements Using Joint Sparsity And Finite Rate Of Innovation

Improved calibration of vertical scanning optical profilometers for spherical profiles measurements

Toralf Scharf, Wilfried Noell, Jeremy Béguelin

A new method for calibrating optical scanning profilometers is presented. Especially adapted to spherical and aspherical profile measurements, it shows an increase of accuracy bigger than one order of magnitude for radius of curvature measurements. Calibra ...

2018

On stability of type II blow up for the critical NLW on $\mathbb{R}^{3+1}$

Joachim Krieger

We show that the finite time type II blow up solutions for the energy critical nonlinear wave equation [ \Box u = -u^5 ] on

\mathbb{R}^{3+1}

constructed in [28], [27] are stable along a co-dimension three manifold of radial data perturbations in a suit ...

2018

Deformable block based motion estimation in omnidirectional image sequences

Pascal Frossard, Francesca De Simone

This paper presents an extension of block-based motion estimation for omnidirectional videos, based on a camera and translational object motion model that accounts for the spherical geometry of the imaging system. We use this model to design a new algorith ...

2017

Efficient Inversion of Multiple-Scattering Model for Optical Diffraction Tomography

Michaël Unser, Thanh-An Michel Pham, Emmanuel Emilien Louis Soubies

Optical diffraction tomography relies on solving an inverse scattering problem governed by the wave equation. Classical reconstruction algorithms are based on linear approximations of the forward model (Born or Rytov), which limits their applicability to t ...

2017

3D galaxy clustering with future wide-field surveys: Advantages of a spherical Fourier-Bessel analysis

Anaïs Marie Rassat

Context. Upcoming spectroscopic galaxy surveys are extremely promising to help in addressing the major challenges of cosmology, in particular in understanding the nature of the dark universe. The strength of these surveys, naturally described in spherical ...

EDP Sciences2015

Heterogeneous vesicles: an analytical approach to equilibrium shapes

Sangwoo Kim

We develop an analytical model to predict equilibrium shapes of two-component heterogeneous vesicles or capsules. Using a free energy functional including the bending energies of the two components and line tension contributions, the model describes shape ...

2015

Reconfigurable Forward Homography Estimation System for Real-Time Applications

Yusuf Leblebici, Vladan Popovic

Image processing and computer vision algorithms extensively use projections, such as homography, as one of the processing steps. Systems for homography calculation usually observe homography as an inverse problem and provide an exact solution. However, the ...

2014

Real-time Implementation of Gaussian Image Blending in a Spherical Light Field Camera

Alexandre Schmid, Yusuf Leblebici, Vladan Popovic, Hossein Afshari

Panoptic is a custom spherical light field camera used as a polydioptric system where imagers are distributed over a spherical geometry, each having its own vision of the surrounding and a distinct focal plane. The spherical light field camera records ligh ...

Ieee2013

Image Blending in a High Frame Rate FPGA-based Multi-Camera System

Alexandre Schmid, Yusuf Leblebici, Vladan Popovic, Hossein Afshari, Abdulkadir Akin, Kerem Seyid, Ömer Cogal

Panoptic is a custom spherical light field camera used as a polydioptric system where imagers are distributed over a hemispherical surface, each having its own vision of the surroundings and a distinct focal plane. The spherical light field camera records ...

2013

Light confinement effect of non-spherical nanoscale solid immersion lenses

Hans Peter Herzig, Gaël David Osowiecki, Toralf Scharf, Myun Sik Kim, David Nguyen

We report on the light confinement effect observed in non-ideally shaped (i.e., non-spherical) nanoscale solid immersion lenses (SILs). To investigate this effect, nanostructures of various shapes are fabricated by electron-beam lithography. When completel ...

Spie-Int Soc Optical Engineering2013

3D Reconstruction Of Wave-Propagated Point Sources From Boundary Measurements Using Joint Sparsity And Finite Rate Of Innovation

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Improved calibration of vertical scanning optical profilometers for spherical profiles measurements

On stability of type II blow up for the critical NLW on $\mathbb{R}^{3+1}$

Deformable block based motion estimation in omnidirectional image sequences

Efficient Inversion of Multiple-Scattering Model for Optical Diffraction Tomography

3D galaxy clustering with future wide-field surveys: Advantages of a spherical Fourier-Bessel analysis

Heterogeneous vesicles: an analytical approach to equilibrium shapes

Reconfigurable Forward Homography Estimation System for Real-Time Applications

Real-time Implementation of Gaussian Image Blending in a Spherical Light Field Camera

Image Blending in a High Frame Rate FPGA-based Multi-Camera System

Light confinement effect of non-spherical nanoscale solid immersion lenses

On stability of type II blow up for the critical NLW on $\mathbb{R}^{3+1}$

Improved calibration of vertical scanning optical profilometers for spherical profiles measurements

Deformable block based motion estimation in omnidirectional image sequences

Heterogeneous vesicles: an analytical approach to equilibrium shapes

Efficient Inversion of Multiple-Scattering Model for Optical Diffraction Tomography

Real-time Implementation of Gaussian Image Blending in a Spherical Light Field Camera

3D galaxy clustering with future wide-field surveys: Advantages of a spherical Fourier-Bessel analysis

Reconfigurable Forward Homography Estimation System for Real-Time Applications

Light confinement effect of non-spherical nanoscale solid immersion lenses

Image Blending in a High Frame Rate FPGA-based Multi-Camera System