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Mirror Match: Reliable Feature Point Matching Without Geometric Constraints

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A fast local descriptor for dense matching

Pascal Fua, Vincent Lepetit, Engin Tola

We introduce a novel local image descriptor designed for dense wide-baseline matching purposes. We feed our descriptors to a graph-cuts based dense depth map estimation algorithm and this yields better wide-baseline performance than the commonly used corre ...

2008

Joint Demosaicing and Super-Resolution Imaging from a Set of Unregistered Aliased Images

Sabine Süsstrunk, Patrick Vandewalle, Karim Krichane

We present a new algorithm that performs demosaicing and super-resolution jointly from a set of raw images sampled with a color filter array. Such a combined approach allows us to compute the alignment parameters between the images on the raw camera data b ...

2007

Local Feature Extraction for Image Super-Resolution

Loïc Arnaud Baboulaz, Pier Luigi Dragotti

The problem of image super-resolution from a set of low resolution multiview images has recently received much attention and can be decomposed, at least conceptually, into two consecutive steps as: registration and restoration. The ability to accurately re ...

IEEE2007

Writer Identification for Smart Meeting Room Systems

Samy Bengio, Jonas Richiardi

In this paper we present a text independent on-line writer identification system based on Gaussian Mixture Models (GMMs). This system has been developed in the context of research on Smart Meeting Rooms. The GMMs in our system are trained using two sets of ...

2006

Fast outlier rejection by using parallax-based rigidity constraint for epipolar geometry estimation

Engin Tola

A novel approach is presented in order to reject correspondence outliers between frames using the parallax-based rigidity constraint for epipolar geometry estimation. In this approach, the invariance of 3-D relative projective structure of a stationary sce ...

2006

The security of VANETs

Jean-Pierre Hubaux, Maxime Raya

In this work, we address the security of VANETs. We provide a detailed threat analysis and devise an appropriate security architecture. We also describe some major design decisions still to be made, which in some cases have more than mere technical implica ...

2005

Localisation de Visages par Boosting de Classificateurs Lineaires

Jean-Philippe Thiran, Julien Meynet

Dans ce rapport, une methode pour la localisation de visages est presentee. La localisation de visages est une des composantes importantes dans l analyse et la comprehension de visages. Les methodes existantes pour localiser des visages peuvent etre subdiv ...

2005

Writer Identification for Smart Meeting Room Systems

Samy Bengio, Jonas Richiardi

IDIAP2005

Multi-view 3D Reconstruction of a Scene Containing Independently Moving Objects

Engin Tola

In this thesis, the structure from motion problem for calibrated scenes containing independently moving objects (IMO) has been studied. For this purpose, the overall reconstruction process is partitioned into various stages. The first stage deals with the ...

2005

Feature point extraction using scale-space representation

Touradj Ebrahimi, Yousri Abdeljaoued

An algorithm for feature point extraction is presented. It is based on a scale-space representation of the image as well as a system for tracking across scales. Using synthetic and real images, it is shown that the proposed algorithm produces stable and we ...

2004