Publications related to Filter Design for Filtered Back-Projection Guided by the Interpolation Model

Local Barycentric Coordinates

Barycentric coordinates yield a powerful and yet simple paradigm to interpolate data values on polyhedral domains. They represent interior points of the domain as an affine combination of a set of control points, defining an interpolation scheme for any fu ...

Association for Computing Machinery2014

Cardinal Hermite Exponential Splines: Theoretical Insights and Applications to Active Contours

Michaël Unser, Virginie Sophie Uhlmann

Cardinal Hermite exponential spline functions are a generalization of the classical cardinal Hermite polynomial splines. In this work we consider the 4-dimensional space

ε _{ 4 }

= {1, x,

e ^{ \alpha x }

,

e ^{ -\alpha x }

} with α ∈ $ ℝ ^{ + } ...

SMAI-SIGMA2014

A 533pW NEP 31×31 pixel THz image sensor based on in-pixel demodulation

Christian Enz, Assim Boukhayma

A THz 31×31 pixel, 100 fps image sensor integrated in a 130 nm CMOS process is presented. Taking advantage of the possibility to modulate the active source that lights the scene, a significant improvement in sensitivity and NEP is achieved by shifting the ...

2014

Isogeometric methods for computational electromagnetics: B-spline and T-spline discretizations

Annalisa Buffa, Rafael Vazquez Hernandez

In this paper we introduce methods for electromagnetic wave propagation, based on splines and on T-splines. We define spline spaces which form a De Rham complex and following the isogeometric paradigm, we map them on domains which are (piecewise) spline or ...

2014

Linear Interpolation Of Biomedical Images Using A Data-Adaptive Kernel

Michaël Unser, John Paul Ward, Aurélien Bourquard, Hagay Kirshner

In this work, we propose a continuous-domain stochastic model that can be applied to image data. This model is autoregressive, and accounts for Gaussian-type as well as for non-Gaussian-type innovations. In order to estimate the corresponding parameters fr ...

IEEE2013

Threshold Saturation in Spatially Coupled Constraint Satisfaction Problems

Rüdiger Urbanke, Nicolas Macris, Seyed Hamed Hassani

We consider chains of random constraint satisfaction models that are spatially coupled across a finite window along the chain direction. We investigate their phase diagram at zero temperature using the survey propagation formalism and the interpolation met ...

Springer Verlag2013

Interpolating point spread function anisotropy

Frédéric Courbin, Georges Meylan, Marc Gentile

Planned wide-field weak lensing surveys are expected to reduce the statistical errors on the shear field to unprecedented levels. In contrast, systematic errors like those induced by the convolution with the point spread function (PSF) will not benefit fro ...

Edp Sciences S A2013

Enhanced Groove Geometry for Herringbone Grooved Journal Bearings

Jürg Alexander Schiffmann

Although gas-lubricated herringbone grooved journal bearings (HGJB) are known for high rotordynamic stability thresholds, small clearance to diameter ratios are required for stable rotor operation. Tight clearances not only increase bearing losses but also ...

Asme2013

Thin film bulk acoustic wave resonators tuning from first principles

Alexander Tagantsev, Alexander Kvasov

Being important for the antiresonance frequency tuning of tunable thin Film Bulk Acoustic wave Resonators (FBARs), the non-linear electrostrictive coefficient was for the first time calculated for BaTiO3 and SrTiO3 using ab initio methods. Further, taking ...

American Institute of Physics2013

GPU Prefilter for Accurate Cubic B-spline Interpolation

Philippe Thévenaz

Achieving accurate interpolation is an important requirement for many signal-processing applications. While nearest-neighbor and linear interpolation methods are popular due to their native GPU support, they unfortunately result in severe undesirable artif ...

Oxford University Press2012

Filter Design for Filtered Back-Projection Guided by the Interpolation Model

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Local Barycentric Coordinates

Cardinal Hermite Exponential Splines: Theoretical Insights and Applications to Active Contours

A 533pW NEP 31×31 pixel THz image sensor based on in-pixel demodulation

Isogeometric methods for computational electromagnetics: B-spline and T-spline discretizations

Linear Interpolation Of Biomedical Images Using A Data-Adaptive Kernel

Threshold Saturation in Spatially Coupled Constraint Satisfaction Problems

Interpolating point spread function anisotropy

Enhanced Groove Geometry for Herringbone Grooved Journal Bearings

Thin film bulk acoustic wave resonators tuning from first principles

GPU Prefilter for Accurate Cubic B-spline Interpolation

A 533pW NEP 31×31 pixel THz image sensor based on in-pixel demodulation

Isogeometric methods for computational electromagnetics: B-spline and T-spline discretizations

Thin film bulk acoustic wave resonators tuning from first principles

GPU Prefilter for Accurate Cubic B-spline Interpolation

Enhanced Groove Geometry for Herringbone Grooved Journal Bearings

Cardinal Hermite Exponential Splines: Theoretical Insights and Applications to Active Contours

Threshold Saturation in Spatially Coupled Constraint Satisfaction Problems

Interpolating point spread function anisotropy

Linear Interpolation Of Biomedical Images Using A Data-Adaptive Kernel

Local Barycentric Coordinates