Publications related to Hermite Snakes with Control of Tangents

Landmark-Based Shape Encoding and Sparse-Dictionary Learning in the Continuous Domain

We provide a generic framework to learn shape dictionaries of landmark-based curves that are defined in the continuous domain. We first present an unbiased alignment method that involves the construction of a mean shape as well as training sets whose eleme ...

2018

Landmark Active Contours for Bioimage Analysis

Virginie Sophie Uhlmann

The problem of identifying the outline of objects in images can be approached from two starting points, either by considering localized features (landmarks, keypoints or regions), or by searching for global contours. Features are regions or points of int ...

EPFL2017

Coherent imaging from bacteria to multicellular organisms

Séverine Coquoz

Structural and functional imaging of cells, tissues and organisms is crucial for understanding biomedical processes. Fluorescence microscopy is an established tool and has contributed to many discoveries in the life sciences. This technique provides molecu ...

EPFL2017

Compact Side and Multi Angle Illumination Lensless Imager and Method of Operating the Same

Christophe Moser, Manon Rostykus

A system for subpixel resolution imaging of an amplitude and quantitative phase image, the system including a waveguide having a top plane, a bottom plane, and two sides, an array of light sources emitting first befit beams from one side of the two sides o ...

2017

Phonon-Mediated Electron Transport through CaO Thin Films

Wolf-Dieter Schneider, Giulia Elisabetta Pacchioni

Scanning tunneling microscopy has developed into a powerful tool for the characterization of conductive surfaces, for which the overlap of tip and sample wave functions determines the image contrast. On insulating layers, as the CaO thin film grown on Mo(0 ...

Amer Physical Soc2015

Efficient Shape Priors for Spline-Based Snakes

Michaël Unser, Daniel Andreas Schmitter, Ricard Delgado Gonzalo, Virginie Sophie Uhlmann

Parametric active contours are an attractive approach for image segmentation, thanks to their computational efficiency. They are driven by application-dependent energies that reflect the prior knowledge on the object to be segmented. We propose an energy i ...

2015

Spline based iterative phase retrieval algorithm for X-ray differential phase contrast radiography

Michaël Unser, Masih Nilchian, Marco Stampanoni

Differential phase contrast imaging using grating interferometer is a promising alternative to conventional X-ray radiographic methods. It provides the absorption, differential phase and scattering information of the underlying sample simultaneously. Phase ...

Optical Soc Amer2015

Snakes with Tangent-Based Control and Energies for Bioimage Analysis

Michaël Unser, Ricard Delgado Gonzalo, Virginie Sophie Uhlmann

We propose a novel active contour for the analysis of filament-like structures and boundaries—features that traditional snakes based on closed curves have difficulties to delineate. Our method relies on a parametric representation of an open curve involvin ...

IEEE2014

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

Estimation of phase derivatives using discrete energy separation algorithm in digital holographic interferometry

Pramod Rastogi, Rishikesh Dilip Kulkarni

This Letter proposes a new method for the estimation of the first-and second-order phase derivatives corresponding to strain and curvature from a single fringe pattern in digital holographic interferometry. The method is based on a discrete energy separati ...

Optical Soc Amer2014

Hermite Snakes with Control of Tangents

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Landmark-Based Shape Encoding and Sparse-Dictionary Learning in the Continuous Domain

Landmark Active Contours for Bioimage Analysis

Coherent imaging from bacteria to multicellular organisms

Compact Side and Multi Angle Illumination Lensless Imager and Method of Operating the Same

Phonon-Mediated Electron Transport through CaO Thin Films

Efficient Shape Priors for Spline-Based Snakes

Spline based iterative phase retrieval algorithm for X-ray differential phase contrast radiography

Snakes with Tangent-Based Control and Energies for Bioimage Analysis

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

Estimation of phase derivatives using discrete energy separation algorithm in digital holographic interferometry

Coherent imaging from bacteria to multicellular organisms

Estimation of phase derivatives using discrete energy separation algorithm in digital holographic interferometry

Compact Side and Multi Angle Illumination Lensless Imager and Method of Operating the Same

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

Landmark-Based Shape Encoding and Sparse-Dictionary Learning in the Continuous Domain

Landmark Active Contours for Bioimage Analysis

Phonon-Mediated Electron Transport through CaO Thin Films

Snakes with Tangent-Based Control and Energies for Bioimage Analysis

Efficient Shape Priors for Spline-Based Snakes

Spline based iterative phase retrieval algorithm for X-ray differential phase contrast radiography