[pt] Sistemas tradicionais de karaokê geralmente utilizam vídeos pré-editados, o que limita a criação de experiências de videokê. Nesta dissertação, propomos um novo método para a geração de videokê em tempo real a partir de fontes de streaming de vídeo, chamado Gerador de Videokê. Este método combina técnicas de processamento de vídeo e áudio para gerar automaticamente videokê e é projetado para realizar o processamento em tempo real ou próximo a isso. Os principais objetivos deste estudo são formular uma metodologia para processar vídeos em fluxo contínuo e gerar videokê em tempo real, mantendo características essenciais como a supressão das vozes principais da música e a geração automática de legendas destacando palavras. Os resultados obtidos representam uma contribuição significativa para o campo da geração de multimídia em tempo real. O método foi implementado em uma arquitetura cliente/servidor para testes. Essas contribuições representam um avanço no campo dos sistemas de entretenimento e multimídia, pois introduzem uma nova metodologia para a criação de experiências de videokê. Até onde sabemos, este é o primeiro trabalho que aborda o desenvolvimento de um gerador de videokê em tempo real que realiza sincronização automática e destaque a nível de palavras, com base em uma revisão da literatura. / [en] Traditional karaoke systems typically use pre-edited videos, which limits the creation of videoke experiences. In this dissertation, we propose a new method for generating videoke in real-time from video streaming sources, called the videoke Generator. This method combines video and audio processing techniques to automatically generate videoke and is designed to perform processing in real-time or near real-time. The main objectives of this study are to formulate a methodology to process videos in continuous flow and to generate videoke in real-time while maintaining essential features such as the suppression of the main voices of the music and the automatic generation of subtitles highlighting words. The results obtained represent a significant contribution to the field of real-time multimedia generation. The method was implemented in a client/server architecture for testing. These contributions represent a step forward in the field of entertainment and multimedia systems as they introduce a new methodology for the creation of videoke experiences. To our knowledge, this is the first work that addresses the development of a real-time videoke generator that performs automatic synchronization and highlighting at the word level, based on a literature review.

Le domaine de la microscopie de fluorescence a connu une réelle révolution ces dernières années, permettant d'atteindre des résolutions nanométriques, bien en dessous de la limite de diffraction prédite par Abbe il y a plus d’un siècle. Les techniques basées sur la localisation de molécules individuelles telles que le PALM (Photo-Activation Light Microscopy) ou le (d)STORM (direct Stochastic Optical Reconstruction Microscopy) permettent la reconstruction d’images d’échantillons biologiques en 2 et 3 dimensions, avec des résolutions quasi-moléculaires. Néanmoins, même si ces techniques nécessitent une instrumentation relativement simple, elles requièrent des traitements informatiques conséquents, limitant leur utilisation en routine. En effet, plusieurs dizaines de milliers d’images brutes contenant plus d’un million de molécules doivent être acquises et analysées pour reconstruire une seule image. La plupart des outils disponibles nécessitent une analyse post-acquisition, alourdissant considérablement le processus d’acquisition. Par ailleurs la quantification de l’organisation, de la dynamique mais aussi de la stœchiométrie des complexes moléculaires à des échelles nanométriques peut constituer une clé déterminante pour élucider l’origine de certaines maladies. Ces nouvelles techniques offrent de telles capacités, mais les méthodes d’analyse pour y parvenir restent à développer. Afin d’accompagner cette nouvelle vague de microscopie de localisation et de la rendre utilisable en routine par des expérimentateurs non experts, il est primordial de développer des méthodes de localisation et d’analyse efficaces, simples d’emploi et quantitatives. Dans le cadre de ce travail de thèse, nous avons développé dans un premier temps une nouvelle technique de localisation et reconstruction en temps réel basée sur la décomposition en ondelettes et l‘utilisation des cartes GPU pour la microscopie de super-résolution en 2 et 3 dimensions. Dans un second temps, nous avons mis au point une méthode quantitative basée sur la visualisation et la photophysique des fluorophores organiques pour la mesure de la stœchiométrie des récepteurs AMPA dans les synapses à l’échelle nanométrique. / The field of fluorescence microscopy has witnessed a real revolution these last few years, allowing nanometric spatial resolutions, well below the diffraction limit predicted by Abe more than a century ago. Single molecule-based super-resolution techniques such as PALM (Photo-Activation Light Microscopy) or (d)STORM (direct Stochastic Optical Reconstruction Microscopy) allow the image reconstruction of biological samples in 2 and 3 dimensions, with close to molecular resolution. However, while they require a quite straightforward instrumentation, they need heavy computation, limiting their use in routine. In practice, few tens of thousands of raw images with more than one million molecules must be acquired and analyzed to reconstruct a single super-resolution image. Most of the available tools require post-acquisition processing, making the acquisition protocol much heavier. In addition, the quantification of the organization, dynamics but also the stoichiometry of biomolecular complexes at nanometer scales can be a key determinant to elucidate the origin of certain diseases. Novel localization microscopy techniques offer such capabilities, but dedicated analysis methods still have to be developed. In order to democratize this new generation of localization microscopy techniques and make them usable in routine by non-experts, it is essential to develop simple and easy to use localization and quantitative analysis methods. During this PhD thesis, we first developed a new technique for real-time localization and reconstruction based on wavelet decomposition and the use of GPU cards for super-resolution microscopy in 2 and 3 dimensions. Second, we have proposed a quantitative method based on the visualization and the photophysics of organic fluorophores for measuring the stoichiometry of AMPA receptors in synapses at the molecular scale.

Fundação de Amparo a Pesquisa do Estado de Minas Gerais / The study of the pupil\'s movements (contraction and dilatation) has a significant clinical interest because it is used as a method of evaluating both, the human visual system and nervous system. This paper presents a technique that can make the human pupil tracking in real time, both the position and the diameter. That is crucial in extracting parameters related to pupillary movements, and these help in diagnosis of various diseases, among other applications. The suggested technique uses the information of the pupil found in the previous frame, size and position, that are used in an algorithm that aims to reduce the time spent on the next frame tracking. Using this procedure it is possible to make the human pupil tracking in real time, in some cases with an average of up to 140 frames per second. Comparisons with other studies were performed both, for the processing time of each frame and for accuracy in pupil\'s location and diameter found in each image . The pupil\'s position tracking is crucial in extracting parameters related to pupillary movements, and these help in diagnosis of various diseases, among other applications. The present work does not track only the diameter but also the position of the pupil in real time. / O estudo dos movimentos (contração e dilatação) da pupila tem interesse clínico relevante, pois é utilizado como método de avaliação tanto do sistema visual humano quanto do sistema nervoso. Este trabalho apresenta uma técnica para efetuar o rastreamento tanto da posição quanto do diâmetro da pupila humana em tempo real. A técnica sugerida utiliza as informações da pupila encontrada no frame anterior, tamanho e posição, que são utilizadas em um algoritmo que objetiva a redução do tempo gasto no rastreamento do próximo frame. Utilizando este algoritmo é possível efetuar o rastreamento da posição e tamanho da pupila humana em tempo real e em alguns casos com uma média de até 140 frames por segundo. Foram realizadas comparações com outros trabalhos tanto em relação a tempo de processamento de cada frame, quanto em precisão na localização e diâmetro da pupila encontrada em cada imagem. O rastreamento do diâmetro da pupila é fundamental na extração de parâmetros relacionados aos movimentos pupilares, e estes auxiliam no diagnósticos de diversas doenças, entre outras aplicações. O presente trabalho faz não só o rastreamento do diâmetro mas também da posição da pupila em tempo real. / Mestre em Ciências

L’intéraction entre la biologie et l’électronique est une discpline en pleine essort. De nom-breux systèmes électroniques tentent de s’interconnecter avec des tissus ou des cellules vivantesafin de décoder l’information biologique. Le Potentiel d’action (PA) est au coeur de codagebiologique et par conséquent il est nécéssaire de pouvoir les repérer sur tout type de signal bio-logique. Par conséquent, nous étudions dans ce manuscrit la possibilité de concevoir un circuitélectronique couplé à un système de microélectrodes capable d’effectuer une acquisition, unedétection des PAs et un enregistrement des signaux biologiques. Que ce soit en milieu bruitéou non, nous considérons le taux de détection de PA et la contrainte de temps réel commedes notions primordiales et la consommation en silicium comme un prix à payer. Initialementdéveloppés pour l’étude de signaux neuronaux et pancréatiques, ces systèmes conviennent par-faitement pour d’autres type de cellules. / Interaction between biology and electronic is in expansion. Many electronic systems aretrying to interconnect with tissues or living cells to decode biological information. The ActionPotential (AP) is the heart of biological coding and therefore it is necessary to be able to locateit from any type of biological signal. Therefore, we study in this manuscript the possibility ofdesigning an electronic circuit coupled to microelectrodes capable of acquisition, detection ofPAs and recording of biological signals. Whether or not in a noisy environment, we consider thedetection rate of PA and the real time-computing constraint as an hard specificationand andsilicon area as a price to pay. Initially developed for the study of neural signals and pancreatic,these systems are ideal for other types of cells.

No description available.

Real time systems have been a major area of study for many years. Advancements in electronics, computers, information technology and digital networks are fueling major changes in the area of real time systems. In this thesis, we look at some of the most commonly modeled real time task systems, such as the periodic task model, including more complex task models such as the sporadic task systems. Primary focus of researchers in these fields include how to guarantee hard real time requirement of any task specification, with the minimal utilization of available hardware resources. Advancement in technology has brought multi-cored architectures with shared memory and massively parallel computing devices within the reach of ordinary computer users. Hence, it makes sense to study existing and newer task models on a wide variety of hardware platforms. Periodic task model and systems with such task models have been designed and well understood. Newer models such as the sporadic task models have been proposed to capture a more larger variety of real time systems being designed and used. We focus on designing more efficient scheduling algorithms for the sporadic LL task model, and propose simpler proofs to some of the algorithms existing in current literature. This thesis also focuses on scheduling sporadic task systems, under both multiprocessor full-migration and multiprocessor partitioned scheme. We also provide approximation algorithms to efficiently determine feasibility of such task systems.

Tato disertační práce se zabývá problematikou zpracování vysokofrekvenčních časových řad. Zaměřuje se na návrh algoritmů a metod pro podporu predikce těchto dat. Výsledkem je model pro podporu řízení rozhodovacího procesu implementovaný do platformy pro komplexní zpracování dat. Model navrhuje způsob formalizace množiny podnikových pravidel, které popisují rozhodovací proces. Navržený model musí vyhovovat splnění požadavků na robustnost, rozšiřitelnost, zpracování v reálném čase a požadavkům ekonometriky. Práce shrnuje současné poznatky a metodologie pro zpracování vysokofrekvenčních finančních dat, jejichž zdrojem jsou nejčastěji burzy. První část práce se věnuje popisu základních principů a přístupů používaných pro zpracování vysokofrekvenčních časových dat v současné době. Další část se věnuje popisu podnikových pravidel, rozhodovacího procesu a komplexní platformy pro zpracování vysokofrekvenčních dat a samotnému zpracování dat pomocí zvolené komplexní platformy. Důraz je kladen na výběr a úpravu množiny pravidel, které řídí rozhodovací proces. Navržený model popisuje množinu pravidel pomocí maticové gramatiky. Tato gramatika spadá do oblasti gramatik s řízeným přepisováním a pomocí definovaných matic umožňuje ovlivnit zpracování dat.

The aim of this thesis is non-realistic video rendering. It starts with a summary of existing techniques and then this thesis concentrates on selected methods that are able to work in real-time. To process video more effectivelly, we use accelleration on graphical processing unit with usage of OpenGL and GLSL.

This thesis deals with a system for tracking the trajectory of the moving object. Further, also for obtaining additional motion data and other information. Thesis focuses on flying objects. There are described all system components and way of their communication. Next, the progress of the expansion unit for measuring by the BeagleBone Black platform. Also there is described testing that took place during aerobatic gliders races, including the demonstrations of recording data and their processing.

No description available.