LAR Video : Lossless Video Coding with Semantic Scalability

Baptized “LAR Video”, the method proposed in this paper describes a new lossless video coding algorithm with advanced semantic scalability. Motion estimation and compensation steps are undertaken first to produce the well known displaced frame difference (DFD). The basic idea is to apply a pyramidal decomposition to this residual error, based on an efficient scalable image compression technique named LAR-APP. As a result of progressive data broadcasting, the image-sequence can be scalably rebuilt in the decoder at different spatial resolution levels. The given experimental results show that the proposed solution achieves not only scalability but also good compression performances

LAR vidéo: Codage sans perte à scalabilité sémantique

National audienceBaptisé "LAR Video", le schéma proposé dans cet article décrit un nouvel algorithme de compression vidéo sans perte avec scalabilité sémantique. Propre au codage vidéo, une étape d'estimation de mouvement est effectuée afin de produire une image d'erreur résiduelle. L'idée ici est d'appliquer sur cette erreur, une décomposition pyramidale issue d'une méthode de codage scalable d'images fixes, le LAR-APP. Résultantes d'une prédiction inter/intra niveau, les erreurs d'évaluation sont transmises progressivement. Le décodeur peut ainsi reconstruire les images de la séquence de façon scalable par niveau de résolution spatiale. Enfin au vu des résultats obtenus, nous pouvons affirmer que le schéma proposé offre en plus de la scalablité, des performances intéressantes en compression

LAR Video: Hierarchical Representation for Low Bit-Rate Color Image Sequence Coding

LAR video is a low complexity system for low bit-rate color image sequence encoding. It aims to propose a joint solution for coding and representation of the frame content. In particular, it allows to provide a compressed description of both chromatic components and motion information at a region level without region partition encoding. Initialy proposed in the LAR coder, used principle has proved to be efficient for still color image encoding. Resulting from a hierarchical spatio-temporal segmentation, a Partition Tree (PT) is transmitted to the decoder with a controlled coding cost. Presented results show interesting performances considering both content representation and compression ratios

Framework For Efficient Cosimulation And Fast Prototyping on Multi-Components With AAA Methodology: LAR Codec Study Case

pp 1667 - 1671Real-time signal and image applications have significant time constraints involving the use of several powerful calculation units. Programmable multi-component architectures have proven to be a suitable solution combining flexibility and computation power. This paper presents a methodology for the fast design of signal and image processing applications. In a unified framework, application modeling, cosimulation and fast implementation onto parallel heterogeneous architectures are enabled and help to reduce time-to-market. Moreover, automatic code generation provides a high abstraction level for users. Finally, the worthwhile nature of Matlab/C language cosimulation is illustrated on a still image codec named LAR

End-stage heart failure: The future of heart transplant and artificial heart

International audienceIn the last decades, outcomes significantly improved for both heart transplantation and LVAD. Heart transplantation remains the gold standard for the treatment of end stage heart failure and will remain for many years to come. The most relevant limitations are the lack of grafts and the effects of long-term immunosuppressive therapy that involve infectious, cancerous and metabolic complications despite advances in immunosuppression management. Mechanical circulatory support has an irreplaceable role in the treatment of end-staged heart failure, as bridge to transplant or as definitive implantation in non-transplant candidates. Although clinical results do not overcome those of HTx, improvement in the new generation of devices may help to reach the equipoise between the two therapies. This review will go through the evolution, current status and perspectives of both therapeutics

Extracorporeal cardiopulmonary resuscitation for out-of-hospital refractory cardiac arrest: A word of caution

International audienceRefers To Joseph M. Bednarczyk, Rohit K. Singal Functional outcomes after resuscitative extracorporeal membrane oxygenation for cardiac arrest: The patients speak for themselves The Journal of Thoracic and Cardiovascular Surgery, Volume 150, Issue 4, October 2015, Pages 955-95

An odyssey of suturing cardiac wounds: Lessons from the past

International audienceBackground and aim of the study Cardiac wounds have been described for centuries and still remain to be fatal. For a long period of time, the suturing of a myocardial laceration was thought to be absolutely impossible if not sacrilege. Methods It is only at the end of the 19th century that pioneers decided to defy such a dogma in desperate cases. Results Nowadays, it seems obvious that a cardiac stab wound requires emergent surgery whenever possible. Conclusions The story of cardiac wounds highlights nicely the change of mind that is required to accept progress and new procedures in medicine

Environnement de conception AAA alliant cosimulation et prototypage rapide

National audienc

Reply to a brief comment on the past and present of surgical treatment of cardiac wounds

International audienc

Ventricular Fibrillation Is a Sign of Life

International audienceVentricular fibrillation (VF) is a deadly rhythm problem. With asystole, it represents one of the most extreme emergencies that may engage vital prognosis within only few minutes if appropriated treatment is not instituted. It is learned in all medical schools worldwide that VF is not compatible with consciousness and sustained life. Moreover, at 37°C, and without restauration of cardiac flow, VF may be responsible for severe and most often irreversible brain damage after 3 minutes