Concept

Compact group

Related publications (97)

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Compact representations for static and dynamic texture synthesis

Roberto Costantini

In nature, textures can be found everywhere. Texture, together with color and shape, represents the fundamental characteristics of objects. Texture conveys an idea of repetition of a certain structure, which is not limited only to the visual domain. We can ...

EPFL2007

Distributed coding of multiresolution omnidirectional images

Pascal Frossard, Ivana Tosic, Vijayaraghavan Thirumalai

This paper addresses the problem of compact representation of a 3D scene, captured by distributed omnidirectional cameras. As the images from the sensors are likely to be correlated in most practical scenarios, we build a distributed algorithm based on cod ...

2007

A Task Specific Kinematic Design Methodology With Application to a 4-DOF Haptic Interface

Hannes Bleuler

Task specific mechanism design for spatial linkages has remained a challenge. In this paper we present a kinematic design methodology, which combines the formalism of the Lie Group method with the effectiveness of creativity techniques from ’integrated pro ...

2007

Visual Focus of Attention Estimation from Head Pose Posterior Probability Distributions

Jean-Marc Odobez, Silèye Oumar Ba

We address the problem of recognizing the visual focus of attention (VFOA) of meeting participants from their head pose and contextual cues. The main contribution of the paper is the use of a head pose posterior distribution as a representation of the head ...

IDIAP2007

On Haagerup and Kazhdan properties

In the first chapter, we characterize p-adic linear algebraic groups with the Haagerup Property. We also characterize connected Lie groups having the Haagerup Property viewed as discrete groups, and we provide an example of a finitely presented group not h ...

EPFL2006

Partial and approximate symmetry detection for 3D geometry

Mark Pauly

"Symmetry is a complexity-reducing concept [...]; seek it every-where." - Alan J. Perlis Many natural and man-made objects exhibit significant symmetries or contain repeated substructures. This paper presents a new algorithm that processes geometric models ...

2006

Integrating Shape Analysis into the Model Checker BLAST

Dirk Thilo Beyer, Grégory Théoduloz

Many software model checkers are based on predicate abstraction. Values of variables in branching conditions are represented abstractly using predicates. The strength of this approach is its path-sensitive nature. However, if the control flow depends heavi ...

2006

Symmetry breaking in mechanical systems

The first part of this thesis studies the problem of symmetry breaking in the context of simple mechanical systems with compact symmetry Lie group G. In this part we shall assume that the principal stratum of the G-action on the configuration space Q of a ...

EPFL2005

Lazy Shape Analysis

Dirk Thilo Beyer, Grégory Théoduloz

2005

Automatic Analysis of Multimodal Group Actions in Meetings

Daniel Gatica-Perez, Samy Bengio, Guillaume Lathoud, Dong Zhang, Mark Barnard

This paper investigates the recognition of group actions in meetings. A statistical framework is proposed in which group actions result from the interactions of the individual participants. The group actions are modelled using different HMM-based approache ...

2004