Publications related to Enhancement of extended depth of field by digital focusing

Unified Theory for Recovery of Sparse Signals in a General Transform Domain

Compressed sensing is provided a data-acquisition paradigm for sparse signals. Remarkably, it has been shown that the practical algorithms provide robust recovery from noisy linear measurements acquired at a near optimal sampling rate. In many real-world a ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2018

Femtosecond X-ray coherent diffraction of aligned amyloid fibrils on low background graphene

Henning Paul-Julius Stahlberg

Here we present a new approach to diffraction imaging of amyloid fibrils, combining a freestanding graphene support and single nanofocused X-ray pulses of femtosecond duration from an X-ray free-electron laser. Due to the very low background scattering fro ...

Springer Science and Business Media LLC2018

A non-stationary stochastic ensemble generator for radar rainfall fields based on the short-space Fourier transform

Nikola Besic, Urs Martin Germann, Daniele Nerini

In this paper we present a non-stationary stochastic generator for radar rainfall fields based on the short-space Fourier transform (SSFT). The statistical properties of rainfall fields often exhibit significant spatial heterogeneity due to variability in ...

Copernicus GmbH2017

An Adaptive Sublinear-Time Block Sparse Fourier Transform

Volkan Cevher, Mikhail Kapralov, Jonathan Mark Scarlett, Amir Zandieh

The problem of approximately computing the

k

dominant Fourier coefficients of a vector

X

quickly, and using few samples in time domain, is known as the Sparse Fourier Transform (sparse FFT) problem. A long line of work on the sparse FFT has resulted in ...

2017

LEAP: Looking beyond pixels with continuous-space EstimAtion of Point sources

Martin Vetterli, Paul Hurley, Thierry Blu, Matthieu Martin Jean-André Simeoni, Hanjie Pan

Context. Two main classes of imaging algorithms have emerged in radio interferometry: the CLEAN algorithm and its multiple variants, and compressed-sensing inspired methods. They are both discrete in nature, and estimate source locations and intensities on ...

2017

Super-resolution microscopy live cell imaging and image analysis

Tomas Lukes

Novel fundamental research results provided new techniques going beyond the diffraction limit. These recent advances known as super-resolution microscopy have been awarded by the Nobel Prize as they promise new discoveries in biology and live sciences. All ...

Czech Technical University in Prague2017

Finite strain FFT-based non-linear solvers made simple

Thomas Willem Jan de Geus

Computational micromechanics and homogenization require the solution of the mechanical equilibrium of a periodic cell that comprises a (generally complex) microstructure. Techniques that apply the Fast Fourier Transform have attracted much attention as the ...

Elsevier2017

Enantioselective Copper-Catalyzed Oxy-Alkynylation of Diazo Compounds

Jérôme Waser, Durga Prasada Rao Hari

Enantioselective catalytic methods allowing the addition of both a nucleophile and an electrophile onto diazo compounds give a fast access into important building blocks. Herein, we report the highly enantioselective oxyalkynylation of diazo compounds usin ...

2017

Spatial fringe analysis techniques for multiple phase and phase derivative estimation

Rishikesh Dilip Kulkarni

Analysis of fringe patterns for the accurate estimation of phase and phase derivatives is of crucial importance in optical interferometry as these quantities provide important information on the physical parameters under study. A wide range of applications ...

EPFL2016

Fixed Points of Generalized Approximate Message Passing with Arbitrary Matrices

Volkan Cevher

The estimation of a random vector with independent components passed through a linear transform followed by a componentwise (possibly nonlinear) output map arises in a range of applications. Approximate message passing (AMP) methods, based on Gaussian appr ...

2016

Enhancement of extended depth of field by digital focusing

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Unified Theory for Recovery of Sparse Signals in a General Transform Domain

Femtosecond X-ray coherent diffraction of aligned amyloid fibrils on low background graphene

A non-stationary stochastic ensemble generator for radar rainfall fields based on the short-space Fourier transform

An Adaptive Sublinear-Time Block Sparse Fourier Transform

LEAP: Looking beyond pixels with continuous-space EstimAtion of Point sources

Super-resolution microscopy live cell imaging and image analysis

Finite strain FFT-based non-linear solvers made simple

Enantioselective Copper-Catalyzed Oxy-Alkynylation of Diazo Compounds

Spatial fringe analysis techniques for multiple phase and phase derivative estimation

Fixed Points of Generalized Approximate Message Passing with Arbitrary Matrices

Finite strain FFT-based non-linear solvers made simple

LEAP: Looking beyond pixels with continuous-space EstimAtion of Point sources

Unified Theory for Recovery of Sparse Signals in a General Transform Domain

Fixed Points of Generalized Approximate Message Passing with Arbitrary Matrices

A non-stationary stochastic ensemble generator for radar rainfall fields based on the short-space Fourier transform

Super-resolution microscopy live cell imaging and image analysis

Femtosecond X-ray coherent diffraction of aligned amyloid fibrils on low background graphene

Enantioselective Copper-Catalyzed Oxy-Alkynylation of Diazo Compounds

Spatial fringe analysis techniques for multiple phase and phase derivative estimation

An Adaptive Sublinear-Time Block Sparse Fourier Transform