Дисертації з теми "Traitement d'image en temps réel"
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Ben, Himane Mohamed Selim. "Vers une approche unifiée pour le suivi temps réel et l'asservissement visuel." Paris, ENMP, 2006. http://www.theses.fr/2006ENMP1393.
Повний текст джерелаNowadays, in addition to the classical domain of the robotic manipulation, vision-based control offers a large spectrum of applications in various contexts using computer vision and control theory. One possibility to develop vision-based control algorithms is to integrate methods and approaches developed in a separately by the vision and the control communities. Instead of considering vision and control techniques separately, in this thesis, they are integrated in a unified framework. We developed a generic, flexible and robust system that can be used by a wide variety of robotic applications. We made different contributions towards the conception of such complete system. Two major contributions are presented:1- A template-based visual tracking of objects in the image using an Efficient Second-order Minimization technique called the ESM technique. Compared to the existing methods, the proposed algorithm gives better convergence properties (bigger radius and higher rate and frequency of convergence). This approach has been generalized to the direct estimation in the Cartesian space of the relative camera/object motion. 2- A new 2D visual servoing is also introduced. The control law is locally stable and unlike all the existing methods, it does not need any a priori measure of the model of object with respect to which the visual servoing is performed. Only information extracted from the reference and the current images are used to compute the control law
Carrara, Jean-Paul. "Parallélisation d'applications de traitement d'image en temps réel sur le processeur ligne SYMPATI2." Toulouse 3, 1993. http://www.theses.fr/1993TOU30184.
Повний текст джерелаItthirad, Frédéric. "Acquisition et traitement d'images 3D couleur temps réel." Thesis, Saint-Etienne, 2011. http://www.theses.fr/2011STET4011.
Повний текст джерелаThe existing 3D sensors aren’t much used and are only capable of capturing 3D dat. When 2D data are necessary, one has to use another camera and correlate the 2 images. NT2I has decided to develop its own solution in order to control the acquisition chain. My work has been to develop a specific camera with color, calibration, and image processing algorithms. In that purpose, I've worked on the extension of the LIP model (Logarithmic Image Processing) for color images and on the implementation of real time algorithms
Dejnozkova, Eva. "Architecture dédiée au traitement d'image basé sur les équations aux dérivées partielles." Paris, ENMP, 2004. https://pastel.archives-ouvertes.fr/pastel-00001180.
Повний текст джерелаThe image processing methods based on Partial Differetial Equations (PDEs) draw a groving attention of the scientific community. The number of applications has increased with the introduction of the Level Set methods. The EDPs apply in many domains such the image improvement, the segmentation by active contours usedboth for static pictures and image sequences or recent methods such as shape-from-shading. The industrial applications of these methods remain limited due to a computation complexity on one hand, and the difficulties of embedded system implementation (energy consumption, memory requirements) on the other hand. Our goal is to propose a dedicated architecture facilitating the implementation of a realtime embedded system. Regarding this objective, we propose a new algorithm Massive Marching solving the Eikonal equation for computation of the distance function. It proceeds in parallel and eliminates the usage of the ordered data structures. It allows to obtain the solution either on the entire image or only on its part : the Narrow Band around the propagation front. The complexity of Massive Marching is linear. The Massive Marching represents the algorithm allowing to obtain the watershed in parallel. Next, we propose two architecture types (i) SIMD and (ii) MIMD, based on several embedded processor cores, implementing Massive Marching in parallel or semi-parallèle. The same architecture types can be used to implement filtering algorithms as well as methods of interface evolution. The same architecture can therefore be used to implement all the steps of a complete application consisting of different types of algorithms, e. G. Filtering followed by segmentation
Porquet, Damien. "Rendu en temps réel de scènes complexes." Limoges, 2004. http://aurore.unilim.fr/theses/nxfile/default/fdef9900-123a-4d8a-ada2-c65cf3c94a1f/blobholder:0/2004LIMO0036.pdf.
Повний текст джерелаIn computer graphics, we distinguish modeling from rendering, that is image synthesis. This thesis framework is real-time rendering of scene composed of complex non deformable 3D objects. Such objects gives high realism in computed images but are difficult to use (in terms of storage space and computing time). A lot of works as been driven in this context. We first describe commonly used approach that is point sample rendering, geometrical mesh simplification and image-based rendering. We first propose different algorithms to extend image based methods to real-time rendering. We then describe a method to generate 4D textures producing image of a given 3D object from arbitrary viewpoint, independently of its geometrical complexity. Finally, we present an image interpolation method to map relief onto a given depth image or a low polygon count version of a complex object. This works intensively use latest GPU capabilities, allowing high quality and real-time rendering at same time
Cassinelli, Alvaro. "Processeurs parallèles optoélectroniques stochastiques pour le traitement d'images en temps réel." Phd thesis, Université Paris Sud - Paris XI, 2000. http://pastel.archives-ouvertes.fr/pastel-00715890.
Повний текст джерелаPuthon, Anne-Sophie. "Détermination de la vitesse limite par fusion de données vision et cartographiques temps-réel embarquées." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2013. http://pastel.archives-ouvertes.fr/pastel-00957392.
Повний текст джерелаFauvet, Eric. "Conception d'un micro-système d'analyse d'images rapides en temps réel." Dijon, 1990. http://www.theses.fr/1990DIJOS006.
Повний текст джерелаGuennebaud, Gaël. "Algorithmes pour le rendu temps-réel de haute qualité des géométries basées points." Toulouse 3, 2005. http://www.theses.fr/2005TOU30226.
Повний текст джерелаIn the context of real-time image synthesis, this thesis investigate the use of points as a display primitve. We propose a complete rendering pipeline of point-based geometries which has the particularity to maintain a very high rendering quality both in case of under-sampled or over-sampled models while maintaining real-time performances. To reach these goals, we present both an adaptation of the surface splatting algorithm to modern graphics cards, and a new technique called deferred splatting which defers filtering operations in order to perform them on visible points only. Finally, in similar fashion to subdivision surfaces for polygonal meshes, we proposed an interpolatory refinement framework allowing to dynamically reconstruct a smooth surface from a scattered and/or under-sampled point based model
Jay, Jacques. "Architecture et traitements d'images temps réel appliqués à l'étude des écoulements." Habilitation à diriger des recherches, Université Jean Monnet - Saint-Etienne, 2005. http://tel.archives-ouvertes.fr/tel-00225400.
Повний текст джерелаEnfin, des méthodes optiques associées à des techniques de traitements d'images ont été utilisées dans le cadre d'étude de transfert de chaleur entre une pièce usinée et l'outil.
Holländer, Matthias. "Synthèse géométrique temps réel." Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0009/document.
Повний текст джерелаEal-time geometry synthesis is an emerging topic in computer graphics.Today's interactive 3D applications have to face a variety of challengesto fulfill the consumer's request for more realism and high quality images.Often, visual effects and quality known from offline-rendered feature films or special effects in movie productions are the ultimate goal but hard to achieve in real time.This thesis offers real-time solutions by exploiting the Graphics Processing Unit (GPU)and efficient geometry processing.In particular, a variety of topics related to classical fields in computer graphics such assubdivision surfaces, global illumination and anti-aliasing are discussedand new approaches and techniques are presented
Bennegadi, Karim. "Étude et réalisation d'opérateurs câblés pour le traitement d'images en temps réel." Compiègne, 1990. http://www.theses.fr/1990COMPD263.
Повний текст джерелаIn order to facilitate the realisation of the hardware processing units in image analysis and pattern recognition, an autonomous environment was designed. To group these hardware units in a single system, to ease their extension and to normalize them for modularity purpose, a hardware image bus was designed, creating the link between different image sources as video digitizing cards or computer buses, and the set of hardware processing units. A full software package that consists in two libraries, complete the hardware part. The first library presents an enhanced user interface that can overlay the image, and the second is a software toolbox used to ease new routines integration, user interface extension and provides a methodology to translate algorithms from software form to hardware form. The hardware bus based part, provides a high data transfer rate using synchronous mode, and the software part is written in C language for modularity and portability purposes
Aassine, Naïma. "Méthodologie de parallélisation d'algorithmes de traitement d'images pour une exécution temps réel." Aix-Marseille 3, 1997. http://www.theses.fr/1997AIX30046.
Повний текст джерелаBerthomé, Philippe. "Conception et réalisation d'un système modulaire pour le traitement d'images temps réel." Nancy 1, 1989. http://www.theses.fr/1989NAN10119.
Повний текст джерелаWeber, Serge. "Dispositif de traitements non linéaires multiples d'images en temps réel : Application biomédicale." Nancy 1, 1986. http://www.theses.fr/1986NAN10104.
Повний текст джерелаNasr, Georges. "Méthode d'analyse d'image en temps réel de cellules en culture : application à l'étude de la contraction des cardiomyocytes." Paris 12, 1994. http://www.theses.fr/1994PA120029.
Повний текст джерелаCoquelet, Christophe. "Une rétine intégrée pour l'écartométrie en temps réel." Paris 11, 1989. http://www.theses.fr/1989PA112331.
Повний текст джерелаPérez, Patricio Madain. "Stéréovision dense par traitement adaptatif temps réel : algorithmes et implantation." Lille 1, 2005. https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/0c4f5769-6f43-455c-849d-c34cc32f7181.
Повний текст джерелаDenis, de Senneville Baudouin. "Correction des mouvements pour la thermométrie temps réel guidée par IRM." Bordeaux 1, 2005. http://www.theses.fr/2005BOR13123.
Повний текст джерелаBrault, Louis-Philippe. "Implantation d'imagerie temps réel par ondes guidées pour écran tactile." Mémoire, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/9447.
Повний текст джерелаKonik, Hubert. "Contribution de l'approche pyramidale à la segmentation des images texturées." Saint-Etienne, 1994. http://www.theses.fr/1994STET4018.
Повний текст джерелаZimmer, Jean-Philippe. "Modélisation de visage en temps réel par stéréovision." Dijon, 2001. http://www.theses.fr/2001DIJOS033.
Повний текст джерелаAngermann, Quentin. "'Détection temps réel assistée par ordinateur pour le dépistage précoce du cancer colorectal en vidéocoloscopie'." Thesis, Cergy-Pontoise, 2018. http://www.theses.fr/2018CERG0926/document.
Повний текст джерелаThis manuscript presents the work carried out for the development of a new tool dedicated to real-time computer-assisted detection for the detection of colorectal polyps in videocoloscopy, in the context of early detection of colorectal cancer. This cancer remains today associated with a high mortality rate when detected too late. A such tool could help to improve medical care.First of all, an analysis of the state of the art makes it possible to highlight the limitations of current methods. It is then possible to determine the scientific and technical positioning to adopt in order to create an innovative tool dedicated to this detection task.A first phase dedicated to the analysis of still frames confirms or invalidates the possible scientific choices and thus develops an approach in accordance with the constraints imposed by clinical use (processing time, performance in particular). This first method is able to detect polyps in less than 40 milliseconds per image, which is compatible with real time, with good performance (F1 Score of 47.55%).Logically, we are interested in the detection of polyps in videos, which allows to get closer to real exams. In particular, several optimizations (such as temporal coherence) are proposed to benefit from video. The tool is then able to alert the doctor about the presence of polyps in 97.6% of cases (on a set of 36 videos) in real time with only an average processing time of 23 milliseconds per frame.In the end, this tool, which can alert the doctor of the presence of colorectal polyps in real time during the examination, could therefore be part of the clinical routine of videocoloscopy. Future clinical trials will identify possible limitations to be overcome
Galinec, David. "Exécution asynchrone de programmes synchrones par transformations automatiques : application au traitement d'images temps-réel." Lille 1, 1997. http://www.theses.fr/1997LIL10054.
Повний текст джерелаAudi, Ahmad. "Implantation dans le matériel de fonctionnalités temps-réel dans une caméra intelligente ultralégère spécialisée pour la prise de vue aérienne." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1022/document.
Повний текст джерелаIn the recent years, the civilian UAVs (Unmanned Aerial Vehicles) have become an interesting tool in aerial photography and in photogrammetry. This led the LOEMI (Laboratoire d'Opto-électronique, de Métrologie et d'Instrumentation) team of IGN (Institut National de l'Information Géographique) to design an light-weight digital camera better adapted for exploiting photogrammetry and metrology applications than consumer cameras. This camera consists essentially of a CMOS ``global shutter'' sensor, an inertial measurement unit IMU, and a system on chip (FPGA + 2 CPUs) used originally to acquire image data from the sensor. This SoC/FPGA-based camera opens the door to implement in hardware some real-time image processing algorithms. Night-time surveys and narrow spectral band with imagery are one of the next applications targeted by IGN, this type of applications needs a long-exposure time imagery that usually exhibits a motion blur due to erratic movements of the UAV. This thesis consists in the implementation on the light-weight IGN camera of an alogirithm which makes it possible to remedy this problem of motion blur. The first part of this work was devoted to the development of the method which consists in acquiring several images with a short exposure time and then using an image processing algorithm in order to generate a stacked image with the equivalent of a long-exposure time. To obtain the correct parameters for the resampling of images, the presented method accurately estimates the geometrical relation between the first and the nth image, taking into account the internal parameters and thedistortion of the camera. Features are detected in the first image by the FAST detector, than homologous points on other images are obtained by template matching aided by the IMU sensors. In order to speed up the processing of our algorithm, some phases are accelerated by implementing them in the hardware (SoC / FPGA).The results obtained on real surveys show that the final stacked image does not present a motion blur. The time results of the different phases of the algorithm also show that the execution of the algorithm has a quasi-zero time. One of the interesting byproducts of this work is the recalibration of the IMU sensors
Rivero, Daniel. "Mesure en temps réel de position à précision subpixel dans une image." Dijon, 1999. http://www.theses.fr/1999DIJOS006.
Повний текст джерелаFilali, Wassim. "Détection temps réel de postures humaines par fusion d'images 3D." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/3088/.
Повний текст джерелаThis thesis is based on a computer vision research project. It is a project that allows smart cameras to understand the posture of a person. It allows to know if the person is alright or if it is in a critical situation or in danger. The cameras should not be connected to a computer but embed all the intelligence in the camera itself. This work is based on the recent technologies like the Kinect sensor of the game console. This sensor is a depth sensor, which means that the camera can estimate the distance to every point in the scene. Our contribution consists on combining multiple of these cameras to have a better posture reconstruction of the person. We have created a dataset of images to teach the program how to recognize postures. We have adjusted the right parameters and compared our program to the one of the Kinect
Beaumesnil, Brice. "Suivi labial couleur pour analyse-synthèse vidéo et communication temps-réel." Pau, 2006. http://www.theses.fr/2006PAUU3048.
Повний текст джерелаThe objective of this thesis is to extract and to track relevant primitives of the mouth in a nonconstrained environment (typically o_ce lighting) to make a realistic animation of a synthetic 3D face model in real-time without audio information. We sought to study various existing methods to adapt them to our problem. First we define a lip hue based on a non-linear color space (little sensitive to lighting variation) in order to exhibit very distinctly skin and lip hue areas on the speaker's face. This hue is then segmented by a clustering algorithm to be able to detect the position of the mouth and its contours. In order to make the algorithm more robust we use synthesis information (feedback loop) of the face to guide the mouth analysis. Low-level methods give us the avantage not to use a database compared to many existing works (typically AAMs). Moreover, their dynamic control ensures a great robustness to the lighting exposition and to the various types of speaker's skin. With this work we have realized a global analysis/synthesis chain (going from the video capture of the speaker until the clone animation). An operational prototype enables us to make animations in real time with many speakers under various types of lighting
Lelong, Lionel. "Architecture SoC-FPGA pour la mesure temps réel par traitement d'image. Conception d'un système embarqué : imageur CMOS et Circuit Logique Programmable." Phd thesis, Université Jean Monnet - Saint-Etienne, 2004. http://tel.archives-ouvertes.fr/tel-00374865.
Повний текст джерелаPetreto, Andrea. "Débruitage vidéo temps réel pour systèmes embarqués." Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS060.
Повний текст джерелаIn many applications, noisy video can be a major problem. There are denoising methods with highly effective denoising capabilities but at the cost of a very high computational complexity. Other faster methods are limited in their applications since they does not handle high levels of noise correctly. For many applications, it is however very important to preserve a good image quality in every situation with sometimes strong embedding constraints. In this work, the goal is to propose an embedded solution for live video denoising. The method needs to remain efficient with even under high level of noise. We limit our work to embedded CPU under 30W of power consumption. This work led to a new video denoising algorithm called RTE-VD: Real-Time Embedded Video Denoising. RTE-VD is composed of 3 steps: stabilization, movement compensation by dense optical flow estimation and spatio-temporal filtering. On an embedded CPU (Jetson AGX), RTE-VD runs at 30 frame per seconds on qHD videos (960x580 pixels). In order to achieve such performance, many compromises and optimizations had to be done. We compare RTE-VD to other state-of-the-art methods in both terms of denoising capabilities and processing time. We show that RTE-VD brings a new relevant tradeoff between quality and speed
Lamaty, Philippe. "Opérateurs matériels de niveau intermédiaire pour le traitement en temps réel des images." Cergy-Pontoise, 2001. http://www.theses.fr/2001CERG0113.
Повний текст джерелаDubois, Julien. "De l'intégration d'algorithmes de traitement d'images pour la mesure temps réel du mouvement vers la définition d'une architecture générique." Saint-Etienne, 2001. http://www.theses.fr/2001STET4012.
Повний текст джерелаThe aim of this thesis is to perform real time measurements of physical parameters (motion, velocity) by image processing. An architecture, named " Round-About ", has been achieved in adequancy with the application features to obtain real time measurements. Round-About uses the difference in volume between the input data (images) and the results (physical parameters). . . [etc. ]
Al, Chami Zahi. "Estimation de la qualité des données multimedia en temps réel." Thesis, Pau, 2021. http://www.theses.fr/2021PAUU3066.
Повний текст джерелаOver the past decade, data providers have been generating and streaming a large amount of data, including images, videos, audio, etc. In this thesis, we will be focusing on processing images since they are the most commonly shared between the users on the global inter-network. In particular, treating images containing faces has received great attention due to its numerous applications, such as entertainment and social media apps. However, several challenges could arise during the processing and transmission phase: firstly, the enormous number of images shared and produced at a rapid pace requires a significant amount of time to be processed and delivered; secondly, images are subject to a wide range of distortions during the processing, transmission, or combination of many factors that could damage the images’content. Two main contributions are developed. First, we introduce a Full-Reference Image Quality Assessment Framework in Real-Time, capable of:1) preserving the images’content by ensuring that some useful visual information can still be extracted from the output, and 2) providing a way to process the images in real-time in order to cope with the huge amount of images that are being received at a rapid pace. The framework described here is limited to processing those images that have access to their reference version (a.k.a Full-Reference). Secondly, we present a No-Reference Image Quality Assessment Framework in Real-Time. It has the following abilities: a) assessing the distorted image without having its distortion-free image, b) preserving the most useful visual information in the images before publishing, and c) processing the images in real-time, even though the No-Reference image quality assessment models are considered very complex. Our framework offers several advantages over the existing approaches, in particular: i. it locates the distortion in an image in order to directly assess the distorted parts instead of processing the whole image, ii. it has an acceptable trade-off between quality prediction accuracy and execution latency, andiii. it could be used in several applications, especially these that work in real-time. The architecture of each framework is presented in the chapters while detailing the modules and components of the framework. Then, a number of simulations are made to show the effectiveness of our approaches to solve our challenges in relation to the existing approaches
Malasné, Nicolas. "Localisation et reconnaissance de visages en temps réel : algorithmes et architectures." Dijon, 2002. http://www.theses.fr/2002DIJOS045.
Повний текст джерелаPhelippeau, Harold. "Méthodes et algorithmes de dématriçage et de filtrage du bruit pour la photographie numérique." Phd thesis, Université Paris-Est, 2009. http://tel.archives-ouvertes.fr/tel-00499252.
Повний текст джерелаDelcroix, Gaëtan. "Etude et réalisation d'un dispositif de contrôle d'aspect temps réel par vision artificielle de pièces métallisées en défilement." Dijon, 2000. http://www.theses.fr/2000DIJOS057.
Повний текст джерелаSasportas, Raphaël. "Etude d'architectures dédiées aux applications temps réel d'analyse d'images par morphologie mathématique." Paris, ENMP, 2002. http://www.theses.fr/2002ENMP1082.
Повний текст джерелаLetellier, Laurent. "Synthèse d'images temps réel sur réseau linéaire de processeurs SIMD : algorithmes et architectures." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT143H.
Повний текст джерелаCassel, Ryan. "Analyse du mouvement humain par un système de vision : une approche globale pour l'analyse et la reconnaissance en temps réel de mouvements acrobatiques." Paris 11, 2005. http://www.theses.fr/2005PA112282.
Повний текст джерелаAcrobatics is an area of athletics that is exacting in terms of gesture analysis and recognition. It comprises body rotations along two separate axes that result in fast and complex movements. Acrobatics intervene in multiple disciplines such as gymnastics, trampoline, ski, and diving. Devices for capturing movements based on markers and multiple cameras for movement analysis are problematic to implement in the context of training and are not exploitable in competition. A single camera may be used but the movement's complexity makes it very difficult to use traditional machine vision techniques without markers to carry out the analysis. Our approach offers a monocular system of analysis and recognition of acrobatic movements in real time, based on global measurements. Information relating to the acrobat's movements-without identifying specific body parts-constitutes our global measurements. Thus, we have developed movement models based on acrobatics characteristics and on global measurements extracted from image sequences. Moreover, we present a system capable of analyzing acrobatic movements with a view toward improvements of athletic performance, or for identifying the performance level of an acrobat. Analysis and recognition are based on measures of the movements identified by extracting and tracking the acrobat
Marchal, Damien. "Simulation en temps réel d'objets déformables et découpables." Lille 1, 2006. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2006/50376-2006-Marchal.pdf.
Повний текст джерелаCloup, Pascal. "Etude et réalisation d'un système d'analyse gestuelle en trois dimensions par traitement d'images en temps réel." Valenciennes, 1989. https://ged.uphf.fr/nuxeo/site/esupversions/e2ada66a-822b-40d9-864e-973d4f37cc07.
Повний текст джерелаPinoli, Jean-Charles. "Contribution à la modélisation, au traitement et à l'analyse d'image." Saint-Etienne, 1987. http://www.theses.fr/1987STET4005.
Повний текст джерелаGuermoud, Hassane. "Architectures Reconfigurables Dynamiquement dédiées aux traitements en temps réel des signaux vidéo." Nancy 1, 1997. http://www.theses.fr/1997NAN10264.
Повний текст джерелаSince a few years ago, most of vision systems with reconfigurable circuits FPGA have become an intermediate solution between systems using processor circuits and systems using a ASIC's circuits. The reconfigurability of FPGA-SRAM has become a trump for the development of several applications with the same hardware. For this work, we have interested for reconfiguring dynamically (DR) this circuits. This configuration mode has been translated by a fast change of there internaI structure during the execution of operations. Novel rules of conception were defined, especially for decomposing the algorithms that we want to implement like a separate module. These modules have the particularity to be executed independently. The domain of low level real time image processing can be decomposed easily like a set of cascaded operators. However, the use of the DR in this domain, impose us to respect the constraint of video real time and to take account of FPGA circuit's reconfiguration time. This constraint must not delay the treatment' s rate. In this fact, we developed two architectures with dynamically reconfiguratiort that the technical proposition was presented in details. They are based on the desynchronisation of the video flow and the treatment flow. Moreover we suggest a criterion in order to evaluate and to compare in one hand the two architectures between them, and in other hand the DR architecture with a classical system that do not use this mode of reconfiguration. In order to validate the concept, we have selected a set of low level images processing operators with a view to implement on the dynamically reconfiguration module (MOD ARD) which are developed in the laboratory (LIEN)
Altarac, Sandrine. "Interférométrie des tavelures : optimisation des paramètres observationnels : application au contrôle en temps réel de l'instrument SPID." Lyon 1, 1999. http://www.theses.fr/1999LYO10056.
Повний текст джерелаVieren, Christophe. "Segmentation de scènes dynamiques en temps réel : application au traiyement de séquences d'images pour la surveillance de carrefours routiers." Lille 1, 1988. http://www.theses.fr/1988LIL10029.
Повний текст джерелаBoussaid, Lotfi. "Etude et implémentation de descripteurs de contenu AV pour les applications multimedia temps réel." Dijon, 2006. http://www.theses.fr/2006DIJOS049.
Повний текст джерелаThe works presented in this thesis contribute to the design of embedded electronic systems which are dedicated for real time multimedia applications. They fall within the framework of design methodology of the new hardware and/or software architecture used for analysis and description of audiovisual content. In this thesis we are first interested in the validation and optimization of shot boundary detection algorithms and in the extraction of high level semantic information using low level audiovisual descriptors. After that, we present the solutions of hardware and/or software implementation related to cut and dissolve detectors at different abstraction levels (logic, RTL and high level based platform). In the last part of this thesis, we propose a generic architecture template for audiovisual content analysis and description. The transposition of this template on embedded systems became possible with the evolution of recently marketed FPGA and the new tools and methodology used on system on programmable chip (SOPC)
Marcellin, Laurent. "Vers une nouvelle approche méthodologique d'extraction temps réel des singularités du matériau bois par vision artificielle." Vandoeuvre-les-Nancy, INPL, 2000. http://www.theses.fr/2000INPL038N.
Повний текст джерелаMaclair, Grégory. "Développement d'algorithmes temps réel de traitement de séquences d'images animées biomédicales pour la thermothérapie guidée par IRM." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13720/document.
Повний текст джерелаDuring the last years MR-guided lo cal hyp erthermia has b een develop edfor the clinical practice. Hyp erthermia is based on the destruction of tumorcells due to an increased temp erature over a sufficient amount of time. The si-multaneous acquisition of MR images during the heating pro cess allows on-linemonitoring of the temp erature and a control of the tissue destruction inducedby the hyp erthermia treatment. The on-line calculation of the temp erature isnot a trivial problem. This is b ecause the physical and physiological pheno-mena like the respiration disturb the temp erature measurement. Hence, it isnecessary to develop strategies for real-time correction in order to deliver pre-cise temp erature maps. In this work, we prop ose several algorithms for imagetreatment enabling the correction of artefacts related to motion and magneticsusceptibility effects. These corrections will provide a reliable estimation of theefficiency of the hyp erthermia treatment
Sheng, Yunlong. "Processeur optique de traitement en temps réel d'images vidéo : Application au calcul optique des moments bidimensionnels des images." Besançon, 1986. http://www.theses.fr/1986BESA2032.
Повний текст джерелаHennequin, Christophe. "Etude et réalisation d’un calculateur temps réel embarqué pour la détection de petits objets dans des séquences d’images multi-échelles." Dijon, 2008. http://www.theses.fr/2008DIJOS015.
Повний текст джерелаThis doctoral thesis is part of a research project of the French-German Research Institute of Saint-Louis (ISL) which has been set up to equip artillery projectiles with an on-board image acquisition and processing system. The study focused on real-time target detection in aerial image sequences, considering the imposed restrictions of low quality images, reduced target size and variable acquisition altitude. In view of the unsatisfactory efficiency of the reference algorithms to rapidly detect small objects in our image sequences, an advanced detection algorithm combining statistical methods with morphological filtering has been developed. After analysing in detail the detector’s behaviour and validating its performance, an algorithm/architecture adequacy approach is used for implementing a compatible real-time processing for embedded systems. Finally, the design of a specific and highly parallel architecture allowed to realize a prototype calculator with a programmable component