Daniel Sage

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Publications associées (72)

Vision-Based System for the Control and Measurement of Wastewater Flow Rate in Sewer Systems

Luca Rossi, Michaël Unser, Daniel Sage, Salim Kayal, David Andrew Barry

IWA2009

Vision-based system for the control and measurement of wastewater flow rate in sewer systems

Luca Rossi, Daniel Sage, Laurent Son Nguyen, Salim Kayal, David Andrew Barry

Combined sewer overflows and stormwater discharges represent an important source of contamination to the environment. However, the harsh environment inside sewers and particular hydraulic conditions during rain events reduce the reliability of traditional ...

IWA Publishing2009

Selective visualization of fluorescent sterols in Caenorhabditis elegans

Daniel Sage

2008

Controlled Exchange of Chromosomal Arms Reveals Principles Driving Telomere Interactions in Yeast

Michaël Unser, Daniel Sage

The 32 telomeres in the budding yeast genome cluster in three to seven perinuclear foci. Although individual telomeres and telomeric foci are in constant motion, preferential juxtaposition of some telomeres has been scored. To examine the principles that g ...

Cold Spring Harbor Laboratory Press2008

The Marr Wavelet Pyramid and Multiscale Directional Image Analysis

Michaël Unser, Daniel Sage, Dimitri Nestor Alice Van De Ville, Katarina Balac

The “Marr wavelet pyramid” is a wavelet decomposition that implements a multiscale version of the complex gradient-Laplace operator. It is closely linked to a multiresolution analysis of

L _{ 2 }

(\mathbb{R} ^{ 2 }

) and it has a fast filterbank im ...

EURASIP2008

Effect of Ageing on Elastin Functionality in Human Cerebral Arteries

Nikolaos Stergiopoulos, Jean Fasel, Michaël Unser, Daniel Sage, Edouard Fonck

ASME2008

Coupled tomography and distinct-element-method approach to exploring the granular media microstructure in a jamming hourglass

Michel Tsukahara, Thomas Liebling, Giorgio Margaritondo, Michaël Unser, Daniel Sage, Lionel Pournin, Marco Ramaioli, Vincent Gajdosik, Slobodan Mitrovic

We describe an approach for exploring microscopic properties of granular media that couples x-ray microtomography and distinct-element-method (DEM) simulations through image analysis. We illustrate it via the study of the intriguing phenomenon of instant a ...

APS2008

Lung Tissue Classification Using Wavelet Frames

Michaël Unser, Daniel Sage, Adrien Raphaël Depeursinge

We describe a texture classification system that identifies lung tissue patterns from high-resolution computed tomography (HRCT) images of patients affected with interstitial lung diseases (ILD). This pattern recognition task is part of an image-based diag ...

IEEE2007

A Snake-Based Approach to Accurate Determination of Both Contact Points and Contact Angles

Patrik Willi Hoffmann, Daniel Sage, Gerit Kulik, Laura Barbieri

We present a new method based on B-spline snakes (active contours) for measuring high-accuracy contact angles. In this approach, we avoid making physical assumptions by defining the contour of the drop as a versatile B-spline curve. When useful, we extend ...

Elsevier2006

Automatic Tracking of Individual Fluorescence Particles: Application to the Study of Chromosome Dynamics

Michaël Unser, Daniel Sage

We present a new, robust, computational procedure for tracking fluorescent markers in time-lapse microscopy. The algorithm is optimized for finding the time-trajectory of single particles in very noisy dynamic (two- or three-dimensional) image sequences. I ...

IEEE2005

PixFRET, an ImageJ Plug-in for FRET Calculation That Can Accommodate Variations in Spectral Bleed-throughs

Daniel Sage, Walter Wahli

Fluorescence resonance energy transfer (FRET) allows the user to investigate interactions between fluorescent partners. One crucial issue when calculating sensitized emission FRET is the correction for spectral bleed-throughs (SBTs), which requires to calc ...

Wiley-Liss2005

IP-LAB: A Tool to Teach Image Processing Programming in Java—Challenge in Swiss Federal Institute of Technology Lausanne

Michaël Unser, Daniel Sage

Image processing is getting more and more important because of the widespread use of digital imaging devices, such as digital cameras or digital videos. While image processing is a very practical discipline, it is perceived as being rather theoretical. It ...

JSEE2005

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