Les applications embarquées ont besoin de plus en plus de puissance de calcul et doivent être déployées sur des architectures spécifiques pour assurer les contraintes non-fonctionnelles du système. Ces architectures peuvent être composées d'unités de calcul hétérogènes, comme des processeurs ou des accélérateurs matériels. Cette hétérogénéité rend le déploiement d'applications de plus en plus complexe, notamment avec l'apparition de circuits reconfigurables dynamiquement. Un des verrous majeurs à ce déploiement réside dans la gestion des communications entre les parties statiques et dynamiques des applications.Le verrou adressé dans cette thèse concerne la gestion des communications entre les blocs fonctionnels de l'application répartis de manière statique en logiciel et de manière dynamique en matériel. Pour faciliter le déploiement des applications existantes et à venir, notre approche s'appuie sur deux contributions complémentaires : une méthodologie de conception basée sur le raffinement progressif d'acteurs flot-de-données, et un middleware distribué assurant les communications entre les acteurs une fois ceux-ci déployés sur la plateforme.Nous avons validé ces concepts sur une application dynamique de suivi de cible en traitement d'images.Dans ce contexte, nous nous sommes intéressés à la virtualisation des communications au sein de la plateforme pour faire communiquer les parties matérielles et logicielles de l'application de manière transparente. Nos contributions ont permis d'aboutir à un démonstrateur opérationnel dans le cadre du projet FOSFOR. / Applications require more computing power and need to be implemented on specific architectures to ensure the non-functioning constraints of the system. These architectures can be composed of heterogeneous processing units, such as processors or hardware accelerators. This heterogeneity makes the deployment of applications on such architectures increasingly complex, especially with the emergence of dynamically reconfigurable devices. One of the hardest obstacles to this deployment is to manage the communication between the static parts and the dynamic ones of the applications.This thesis deals with the communication management issue between the application functional blocks, ones being statically implemented in software, and the others dynamically in hardware. In order to facilitate the deployment of existing applications and those to come, our approach relies on two complementary contributions: a methodology of conception based on the progressive refinement of data-flow actors, and a distributed middleware ensuring the communication between the actors deployed on the platform.These concepts have been validated on a dynamic tracking target application relying on image processing. In this context, we were interested in the virtualization of the communication within the platform in order to allow the communications between the software and the hardware parts of the application in a transparent way. Our contributions permits us to achieve an operational demonstrator in the frame of the FOSFOR project.

La mesure cardiaque sans contact réalisée grâce aux méthodes de photopléthysmographie sans contact est un domaine de recherche très actif. Depuis l'introduction en 2010 d'une nouvelle méthode de mesure avec des capteurs optiques d'entrée de gamme (webcam PC), les travaux de recherche se sont multipliés. Ainsi, on observe une plus grande diversité des méthodes proposées afin de réaliser la mesure. Egalement, la précision de la mesure a grandement progressé et les scénarios et possibilités d'usage de la technologie sont aujourd'hui très nombreux. Au cœur de ce processus de mesure, la segmentation dans l'image de la ou les zones d'intérêt est une étape clé. Nous proposons dans cette thèse une méthode innovante afin de réaliser la mesure photoplethysmographique sans contact en identifiant implicitement les zones de peau vivante dans la vidéo. Nous avons montré que notre approche permet d'améliorer la qualité de la mesure en favorisant les zones dans l'image où le signal est de plus grande qualité. Afin de rendre possible l'intégration de notre solution, nous avons proposé une nouvelle méthode de segmentation en superpixels, nommée IBIS, qui permet de réduire la complexité algorithmique de cette étape du traitement. Ce faisant, nous avons démontré la faisabilité de l'intégration de notre solution au sein d'une plateforme embarquée. Les différentes méthodes ont été évaluées au travers de plusieurs expérimentations afin de valider leurs performances. Notre méthode de segmentation en superpixels est comparée aux méthodes de l'état de l'art tandis que nous avons implémenté plusieurs des méthodes de mesure du signal photoplethysmographique afin de discuter de l'impact de notre approche sur la qualité de la mesure photoplethysmographique. Que ce soit pour la segmentation en superpixels ou pour l'estimation du rythme cardiaque sans contact, nous avons montré une importante plus-value de nos méthodes comparées à celles disponibles dans la littérature. Les différents travaux présentés dans ce document ont été valorisés au travers de publications en conférences et revue. / Heart-rate estimation performed with remote photoplethysmography is a very active research field. Since pioneer works in 2010, which demonstrated the feasibility of the measure with low-grade consumers’ camera (webcam), the number of scientific publications have increased significantly in the domain. Hence, we observe a multiplication of the methods in order to retrieve the photoplethysmographic signal which has led to an increased precision and quality of the heart-rate estimation. Region of interest segmentation is a key step of the processing pipeline in order to maximize the quality of the measured signal. We propose a new method to perform remote photoplethysmographic measurement using an implicit living skin identification method. Hence, we have shown that our approach lead to an improvement in both quality of the signal measured and precision of the heart-rate estimation by favoring more contributive area. As we are working with hardware integration constraint, we propose a new superpixels segmentation method which requires significantly less computation power than state of the art methods by reducing the algorithmic complexity of this step. Moreover, we have demonstrated the integration and real time capabilities by implementing our solution to an embedded device. All of our proposed method have been evaluated through different experimentations. Our new segmentation method, called IBIS, have been compared to state of the art methods to quantify the quality of the produced segmentation. To quantify the impact of our approach on the quality of the photoplethysmographic measure, we have implemented and compared state of the art methods with our proposed method. For both the superpixels segmentation and remote heart-rate estimation, our methods have shown great results and advantages compared to state of the art ones. Our works have been reviewed by the scientific community through several conference presentations and journal publications.

As the technology of SOC has greatly improved and man want much more powerful mobile device, the invention of multi-task device for vehicle are predictable. This theme contains integration of GPS and GSM/GPRS, using a ARM7-core embedded platform functioning wireless communication and global positioning, and also taking advantage of the open-source uClinux to accomplish the multi-task monitoring & burglarproof system for vehicle. Moreover, we design a server end for multi-user to monitor and to remote control vehicles online. Combined with e-map system sold in the market, we can monitor all mobile devices any time, anywhere. We also implement this as a value added service for cellular phone to make it more than a communication or multimedia device. Due to the high cell phone possession rate in Taiwan, we can easily construct a system to monitor and to control our lovely car by cell phone, without extra effort and additional hardware.

This dissertation deals with (a) fine granularity video compression technique and (b) its application to robust video transmission over wireless Internet. First, two wavelet-domain motion estimation algorithms, HMRME (Half-pixel Multi-Resolution Motion Estimation) and HSDD (Hierarchical Sum of Double Difference Metric), have been proposed to give wavelet-based FGS (Fine Granularity Scalability) video encoder with either low-complexity or high-performance features. Second, a VLSI-friendly high-performance embedded coder ABEC (Array-Based Embedded Coder) has been built to encode motion compensation residue as bitstream with fine granularity scalability. Third, the analysis of loss-rate prediction over Gilbert channel with loss-rate feedback, and several optimal FEC (Forward Error Correction) assignment schemes applicable for any real-time FGS video transmission system will be presented in this dissertation. In addition to those theoretical works mentioned above, for future study on embedded systems for wireless FGS video transmission, an initiative FPGA-based MPEG-4 video encoder has also been implemented in this work.

Ludwig Wittgenstein, austrian-born philosopher, wrote that “the limits of my language mean the limits of my world. All I know is what I have words for”. We tend to think so highly of our language because we think so highly about ourselves. Yet imagine be- ing able to communicate emotions without words. Words can’t express the visceral nature of our emotions. Words aren’t enough. How can we experience our emotional world, and others, in a more visceral, primitive way? This project proposes the creation of a new sense, using embodied technology, to allow human beings to have a different experience of each other’s emotions, through the study of the long distance relationship scenario. In this human augmentation scenario, design, and specially speculative design have an inherent power to create discussion, awareness and bring attention to how the new developed technologies could affect our existence. This project is meant to ask questions rather than nd a solution. It is meant for ev- eryone who is ready to think about the future of human beings and our evolution as a species. This document presents an overview of the ve (5) months project while detailing the extension of the work and exploration of the product proposed for emotional human augmentation.

The master’s thesis deals with the design of a synchronous motor with embedded magnets. First of all, the general theory of synchronous motor, which is focused on field-weakening drive, is described. Then a 6-pole and a 8-pole version of the motor with embded magnet, which has 65 kW and 3000 rpm is complexly designed. Motors are compared with each other and with a motor with surface magnets, that was also designed in this work. Finally, all motors are compared with a mafufactured and measured motor.

This work deals with Audified Audio Processing System. This embedded system includes an Arm processor running the Linux operating system. At present, parameter control (phantom, gain) is complicated, without feedback. In this work, the creation of server - client application, which will allow easy setting of the mentioned parameters and will show their effect, is described.

This work deals with Audified Audio Processing System. This embedded system includes an ARM processor running the Linux operating system. At present, parameter control (phantom, gain) is complicated, without feedback. In this work, the creation of web application, which will allow easy setting of the mentioned parameters and will show their effect, is described.

This paper deals with development and construction of an electronic drum module. The purpose of the device is to capture signals from an electronic drumkit and to produce sound accordingly. Firstly, a protoype with no sound output is constructed to demonstrate an ability to capture input signals. Based on its function, parameters for a final device are determined. Then, electronic component selection and design of printed circuit boards is described with an aim to maximalize polyphony and minimize latency of the sound generator. After that, firmware with software mixing algorithm is designed. Lastly, testing and measurement of real device parameters is performed.

This work deals with description of graphic library for a touch screen educational kit with a microcontroller from Freescale. Part of this library is a driver that accelerates gradient rendering and supports reading from video RAM. The library allows inserting images with transparency and their upscaling. Multiple fonts are also supported. Fonts can be upscaled and their weight can be set.