Publications related to Unsupervised Connectivity-Based Thresholding Segmentation of Midsagittal Brain MR Images

Geometry-aware analysis of high-dimensional visual information sets

Over the past few decades we have been experiencing a data explosion; massive amounts of data are increasingly collected and multimedia databases, such as YouTube and Flickr, are rapidly expanding. At the same time rapid technological advancements in mobil ...

EPFL2009

Estimation of modelling errors in structural system identification

Ian Smith, James-Alexandre Goulet

This paper presents a method for measurement-system design through criteria related to model based structural identification. Using a multi-model approach and results from previous research carried out at EPFL, an improved algorithm is proposed. The algori ...

2009

Diffusion least-mean squares with adaptive combiners

Ali H. Sayed

This paper presents an efficient adaptive combination strategy for diffusion algorithms over adaptive networks in order to improve the robustness against the spatial variation of SNR over the network. The diffusion least-mean square (LMS) algorithm with th ...

IEEE2009

Multimodal Speaker Localization from Omnidirectional Videos

Jean-Philippe Thiran, Mihai Gurban, Pascal Reuse

The use of omnidirectional cameras for videoconferencing promises to simplify the hardware setup necessary for large groups of participants. We investigate the use of a multimodal speaker detection algorithm on audio-visual sequences captured with such a c ...

2009

Sensor Network Localization from Local Connectivity : Performance Analysis for the MDS-MAP Algorithm

Amin Karbasi, Andrea Montanari

Sensor localization from only connectivity information is a highly challenging problem. To this end, our result for the first time establishes an analytic bound on the performance of the popular MDS-MAP algorithm based on multidimensional scaling. For a ne ...

2009

A collaborative approach to image segmentation and behavior recognition from image sequences

Laura Ioana Gui

Visual behavior recognition is currently a highly active research area. This is due both to the scientific challenge posed by the complexity of the task, and to the growing interest in its applications, such as automated visual surveillance, human-computer ...

EPFL2008

Segmenting memory colours

Sabine Süsstrunk, Francisco Estrada

Memory colours refer to the colour of specific image classes that have the essential attribute of being perceived in a consistent manner by human observers. In colour correction or rendering tasks, this consistency implies that they have to be faithfully r ...

2008

Blocked algorithms for the reduction to Hessenberg-triangular form revisited

Daniel Kressner, Bo Kågström

We present two variants of Moler and Stewart's algorithm for reducing a matrix pair to Hessenberg-triangular (HT) form with increased data locality in the access to the matrices. In one of these variants, a careful reorganization and accumulation of Givens ...

2008

$ H _{ 2 } $ O: Reversible Hexagonal-Orthogonal Grid Conversion by 1-D Filtering

Dimitri Nestor Alice Van De Ville

In this work, we propose a new grid conversion algorithm between the hexagonal lattice and the orthogonal (a.k.a. Cartesian) lattice. The conversion process, named

H _{ 2 }

O, is easy to implement and is perfectly reversible using the same algorithm to ...

IEEE2007

Tracking Atoms with Particles for Audio-visual Source Localization

Pierre Vandergheynst, Andrea Cavallaro, Gianluca Monaci, Emilio Maggio

We present a general framework and an efficient algorithm for tracking relevant video structures. The structures to be tracked are implicitly defined by a Matching Pursuit procedure that extracts and ranks the most important image contours. Based on the ra ...

2007

Unsupervised Connectivity-Based Thresholding Segmentation of Midsagittal Brain MR Images

Graph Chatbot

Chat with Graph Search

Geometry-aware analysis of high-dimensional visual information sets

Estimation of modelling errors in structural system identification

Diffusion least-mean squares with adaptive combiners

Multimodal Speaker Localization from Omnidirectional Videos

Sensor Network Localization from Local Connectivity : Performance Analysis for the MDS-MAP Algorithm

A collaborative approach to image segmentation and behavior recognition from image sequences

Segmenting memory colours

Blocked algorithms for the reduction to Hessenberg-triangular form revisited

$ H _{ 2 } $ O: Reversible Hexagonal-Orthogonal Grid Conversion by 1-D Filtering

Tracking Atoms with Particles for Audio-visual Source Localization

Estimation of modelling errors in structural system identification

Multimodal Speaker Localization from Omnidirectional Videos

Diffusion least-mean squares with adaptive combiners

A collaborative approach to image segmentation and behavior recognition from image sequences

Segmenting memory colours

Geometry-aware analysis of high-dimensional visual information sets

Blocked algorithms for the reduction to Hessenberg-triangular form revisited

Sensor Network Localization from Local Connectivity : Performance Analysis for the MDS-MAP Algorithm

$ H _{ 2 } $ O: Reversible Hexagonal-Orthogonal Grid Conversion by 1-D Filtering

Tracking Atoms with Particles for Audio-visual Source Localization