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

Publications associées (61)

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Distortion Optimized Multipath Video Streaming

Pascal Frossard, Dan Jurca

This paper addresses the problem of choosing the best streaming policy for distortion optimal multipath video delivery, under delay constraints. The streaming policy consists in a joint selection of the video packets to be transmitted, as well as their sen ...

2004

An Adaptive Algorithm for Efficient Message Diffusion in Unreliable Environments

Rodrigo Malta Schmidt, Benoît Garbinato, Fernando Pedone

In this paper, we propose a novel approach for solving the reliable broadcast problem in a probabilistic unreliable model. Our approach consists in first defining the optimality of probabilistic reliable broadcast algorithms and the adaptiveness of algorit ...

2004

Conjectures on an algorithm for convex parametric quadratic programs

Colin Neil Jones

An algorithm for convex parametric QPs is studied. The algorithm explores the parameter space by stepping a sufficiently small distance over the facets of each critical region and thereby identifying the neighboring regions. Some conjectures concerning thi ...

Cambridge University Engineering Dept2004

A Multi-Agent System for Integrating a Large-Scale Project

Boi Faltings, Carlos Eisenberg

This paper presents a multiagent-system for integrating AL-ICE: a real-life, distributed, large-scale particle physics experiment of the LHC project at CERN. The work is concerned with solving the large-scale coordination problem using a distributed constr ...

2003

Solving Agreement Problems with Weak Ordering Oracles

André Schiper, David Cavin, Fernando Pedone

Agreement problems, such as consensus, atomic broadcast, and group membership, are central to the implementation of fault-tolerant distributed systems. Despite the diversity of algorithms that have been proposed for solving agreement problems in the past y ...

2002

An Efficient Universal Construction for Message-Passing Systems

Rachid Guerraoui, Bastian Pochon, Partha Dutta

A universal construction is an algorithm that transforms any object with a sequential specification into a wait-free and linearizable implementation of that object. This paper presents a novel universal construction algorithm for a message-passing system w ...

2002

Reliable and Total Order Broadcast in the Crash-Recovery Model

Rachid Guerraoui, Romain Boichat

This paper addresses the problem of broadcasting messages in a reliable and totally ordered manner when processes and channels may crash and recover, or crash and never recover. We present a suite of specifications of reliable and total order broadcast pri ...

2001

Unsupervised Connectivity-Based Thresholding Segmentation of Midsagittal Brain MR Images

Michaël Unser

In this paper, we propose an algorithm for automated segmentation of midsagittal brain MR images. First, we apply thresholding to obtain binary images. From the binary images, we locate some landmarks. Based on the landmarks and anatomical information, we ...

Elsevier1998

Constraint Based Diagnosis Algorithms For Multiprocessors

Constraint-based diagnosis algorithms for multiprocessors A. Petri, P. Urban, J. Altmann, M. Dal Cin, E. Selenyi, K. Tilly, A. Pataricza In the latest years, new ideas appeared in system level diagnosis of multiprocessor systems. In contrary to the traditi ...

1997

Time-variant displacement structure and triangular arrays

Ali H. Sayed

The authors extend the concept of displacement structure to time-variant matrices and use it to efficiently and recursively propagate the Cholesky factor of such matrices. A natural implementation of the algorithm is via a modular triangular array of proce ...

IEEE1994