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Статті в журналах з теми "Projection d’images"
Mattiato, Emmanuel. "Irène Némirovsky et Paul Morand dans l’œil du cinéma." Mnemosyne, no. 4 (October 11, 2018): 12. http://dx.doi.org/10.14428/mnemosyne.v0i4.12323.
Повний текст джерелаWesterwelle, Karin. "Pourquoi condamner « Les Bijoux » ?" Romanic Review 113, no. 3 (December 1, 2022): 329–43. http://dx.doi.org/10.1215/00358118-10055067.
Повний текст джерелаDentici, M., M. Bossuroy, H. Megherbi, and M. R. Moro. "Raconter et se raconter à partir d’images représentant la diversité culturelle : intérêt d’une épreuve projective transculturelle pour les enfants aux appartenances culturelles multiples." Neuropsychiatrie de l'Enfance et de l'Adolescence 67, no. 7 (November 2019): 352–58. http://dx.doi.org/10.1016/j.neurenf.2019.01.007.
Повний текст джерелаNussbaum, Valentin. "Le mur d’images au cinéma et à la télévision : mise en lumière d’un dispositif de projection mentale." Intermédialités, no. 24-25 (December 7, 2015). http://dx.doi.org/10.7202/1034168ar.
Повний текст джерелаBoulouch, Nathalie. "Photographie illégitime, cinéma du pauvre : le destin impossible de la diapositive." Intermédialités, no. 24-25 (December 7, 2015). http://dx.doi.org/10.7202/1034154ar.
Повний текст джерелаAhr, Sylviane, and Pierre Moinard. "L’UTILISATION DE LA VIDÉOPROJECTION : RENOUVELLEMENT OU STABILISATION DES PRATIQUES D’ENSEIGNEMENT DE L’APPROCHE ANALYTIQUE DES TEXTES LITTÉRAIRES DANS LE SECONDAIRE EN FRANCE ?" Pratiques effectives d’enseignement de la littérature avec le numérique 5 (June 1, 2018). http://dx.doi.org/10.7202/1046904ar.
Повний текст джерелаOberhuber, Andrea. "Épiphanie du corps dans L’Usage de la photo d’Annie Ernaux et Marc Marie." @nalyses. Revue des littératures franco-canadiennes et québécoise, January 12, 2016. http://dx.doi.org/10.18192/analyses.v11i1.1480.
Повний текст джерелаДисертації з теми "Projection d’images"
Durix, Bastien. "Squelettes pour la reconstruction 3D : de l'estimation de la projection du squelette dans une image 2D à la triangulation du squelette en 3D." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/19589/1/durix.pdf.
Повний текст джерелаNassif, Marcel. "Méthode de fabrication additive endoscopique par photopolymérisation pour la réparation in-situ de systèmes en espace contraint." Electronic Thesis or Diss., Compiègne, 2022. http://www.theses.fr/2022COMP2684.
Повний текст джерелаThis thesis concerns the study and the development of a novel endoscopic 3D printing process based on photo-polymerization. The idea behind endoscopic 3D printing is to print 3D objects or to repair damaged parts in a dense mechanical assembly without disassembling it. The thesis aims, once the state of the art is studied, to propose solutions adapted to the endoscopic problem, then to model, design, realize and experimentally validate the two main subsystems (UV photo-polymerization through an image guide, resin spraying through a tubular pipe) which, once synchronized, provide the additive printing. Inspired by the vat polymerization method, the liquid resin is transmitted endoscopically and sprayed onto the printing surface (spraying system). Then, a UV pattern, structured by a DMD (Digital Micromirror Device), is transmitted through the image guide and focused onto the printing surface to polymerize a layer of liquid resin. These two steps are repeated several times in order to print layers on top of each other to obtain a 3D part. An endoscopic actuation system (non-integrated translation actuator) allows maintaining the probe at a distance from the printing surface equal to the focal length of the objective of the instrument. In this thesis, the endoscopic UV projection system was designed, modeled, implemented and tested. The design and performances of the optical system were presented in two international conferences. Multilayer objects were fabricated with a layer thickness of 50 μm on a circular printing area of 9.54 mm in diameter. An optical analysis method based on the use of the modulation transfer functions (MTF) was used to test the performance of the endoscopic optical system and to characterize the lateral resolution of the printed parts. Using the MTF method experimentally, a drop in optical resolution due to the image guide was estimated as high as 16 μm compared to the value obtained in the experimental setup containing the same optical components except for the image guide. The lateral resolution of the printed parts was finally limited by the resin (50 μm) and not by the resolution of the optical system. An endoscopic atomization system was also studied, implemented and tested. An endoscopic spraying system was implemented to allow a remote deposition of the resin onto the printing surface. The choice of an air atomization method was adopted. The design, control and realization of the atomization system are presented. Finally, the spraying system was combined with the UV pattern projection system. Preliminary results of printing objects were obtained and 3D parts with a thickness of 0.65 mm are printed (nine layers). Due to a phenomenon called "overspray" (during the spraying process, the resin reaches the printing area and is pushed to the sides by the air pressure that sprays it), the thickness of the layers is not constant between them, but gradually decreases, so the adjustment of the spraying parameters becomes critical. The spraying system still needs to be optimized in order to eliminate overspray and to be able to print uniform layers with a specific thickness. In addition, we have been working on a 2D visualization system but the lack of light on the printing surface prevents us from being able to visualize and control the system. In the future, we propose to spray a resin mixed with a fluorescent dye to make it possible to distinguish the polymerized zones from the uncured zones in each layer of the part
Guénard, Jérôme. "Synthèse de modèles de plantes et reconstructions de baies à partir d’images." Thesis, Toulouse, INPT, 2013. http://www.theses.fr/2013INPT0101/document.
Повний текст джерелаPlants are essential elements of our world. Thus, 3D plant models are necessary to create realistic virtual environments. Mature computer vision techniques allow the reconstruction of 3D objects from images. However, due to the complexity of the topology of plants, dedicated methods for generating 3D plant models must be devised. This thesis is divided into two parts. The first part focuses on the modeling of biologically realistic plants from a single image. We propose to generate a 3D model of a plant, using an analysis-by-synthesis method considering both a priori information of the plant species and a single image. First, a dedicated 2D skeletonisation algorithm generates possible branching structures from the foliage segmentation. Then, we built a 3D generative model based on a parametric model of branching systems taking into account botanical knowledge. The resulting skeleton follows the hierarchical organisation of natural branching structures. Varying parameter values of the generative model (main branching structure of the plant and foliage), we produce a series of candidate models. A Bayesian model optimizes a posterior criterion which is composed of a likelihood function which measures the similarity between the image and the reprojected 3D model and a prior probability measuring the realism of the model. After modeling plant models branching systems and foliage, we propose to model the fruits. As we mainly worked on vines, we propose a method for reconstructing a vine grape from at least two views. Each bay is considered to be an ellipsoid of revolution. The resulting method can be adapted to any type of fruits with a shape similar to a quadric of revolution. The second part of this thesis focuses on the reconstruction of quadrics of revolution from one or several views. Reconstruction of quadrics, and in general, 3D surface reconstruction is a very classical problem in computer vision. First, we recall the necessary background in projective geometry quadrics and computer vision and present existing methods for the reconstruction of quadrics or more generally quadratic surfaces. A first algorithm identifies the images of the principal foci of a quadric of revolution from a "calibrated" view (that is, the intrinsic parameters of the camera are given). Then we show how to use this result to reconstruct, from a linear triangulation scheme, any type of quadrics of revolution from at least two views. Finally, we show that we can derive the 3D pose of a given quadric of revolution from a single occluding contour. We evaluate the performance of our methods and show some possible applications
Zamir, Syed Waqas. "Perceptually-inspired gamut mapping for display and projection tecnologies." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/404677.
Повний текст джерелаLes indústries de cinema i televisió estan treballant contínuament en el desenvolupament de diferents característiques de la imatge que puguin proporcionar una millor experiència visual per als espectadors; aquests atributs d’imatge inclouen la resolució espacial, la resolució temporal (fotogrames per segon), major contrast i, recentment, amb les noves tecnologies de visualització emergents, una gamma de colors (gamut) molt més ampli. El gamut d’un dispositiu és el conjunt de colors que aquest dispositiu és capaç de reproduir. Els algoritmes de modificació de gamut (GMA, de les seves sigles en anglés) transformen els colors del contingut original a la paleta de color del dispositiu de visualització amb els objectius de (a) reproduir el contingut amb precisió preservant al mateix temps la intenció artística del creador del contingut original i (b) utilitzar tot el gamut de color del dispositiu de visualització. Hi ha dos tipus d’algoritmes de modificació de gamut: Reducció de Gamut (GR) i Extensió de Gamut (GE). GR implica la transformació dels colors d’un gamut d’origen més gran a un gamut de destinació més petit. Mentre que a GE, els colors s’assignen d’un gamut d’origen petit a un gamut de destinació més gran. En aquesta tesi es proposen tres algoritmes de Reducció de Gamut (GRAs) i quatre algoritmes d’extensió de Gamut (GEAs). Aquests mètodes compleixen amb algunes propietats perceptives globals i locals bàsiques de la visió humana, produint resultats que són estat de l’art, i que són naturals i perceptualment fidels al material original. D’altra banda, es presenta una avaluació psicofísica del problema d’extensió de Gamut específicament dissenyada per a cinema utilitzant un projector de cinema digital en condicions cinemàtiques (baixa llum ambiental); aquest estudi creiem que és el primer del seu tipus a la literatura. També mostrem com les mètriques de qualitat d’imatge disponibles actualment proporcionen resultats que no es correlacionen bé amb l’elecció dels usuaris quan s’apliquen al problema d’Extensió de Gamut.
Thiebaut, Lonjaret Lucie. "Approche surfacique en IRM fonctionnelle cérébrale : projection corticale par résolution d'un problème inverse." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0627.
Повний текст джерелаThis thesis deals with cerebral functional magnetic resonance imaging (fMRI). Until now, fMRI is mainly used in the field of neurosciences as a tool to understand cognitive processes and the links between anatomy and function. However, fMRI use is limited compared to the perspectives it offers. Indeed, three properties of the fMRI signal are problematic. First, this signal is not a direct representation of cerebral activities, thus resulting in a temporal blur that opposes the accurate localization of neuronal activities in time. Then, only the temporal variations of the fMRI signal can determine the presence or absence of those activities. Yet, those fluctuations are small compared to the overall signal and noise magnitudes. And last but not least, ambiguities related to spatial localization of cerebral activities are numerous and especially troublesome around the cortical ribbon due to its highly convoluted shape. Therefore, several approaches offer to study fMRI data onto the cortical surface. However, they all consider the problem as an interpolation one, neglecting the origin of the acquired signal of interest : the cortical ribbon. The original idea behind the work achieved in this thesis consists in posing the projection problem as an inverse problem to solve. This way we achieve both the surface-based projection and the recovering of the original cortical signal spatio-temporal properties
Piffet, Loïc. "Décomposition d’image par modèles variationnels : débruitage et extraction de texture." Thesis, Orléans, 2010. http://www.theses.fr/2010ORLE2053/document.
Повний текст джерелаThis thesis is devoted in a first part to the elaboration of a second order variational modelfor image denoising, using the BV 2 space of bounded hessian functions. We here take a leaf out of the well known Rudin, Osher and Fatemi (ROF) model, where we replace the minimization of the total variation of the function with the minimization of the second order total variation of the function, that is to say the total variation of its partial derivatives. The goal is to get a competitive model with no staircasing effect that generates the ROF model anymore. The model we study seems to be efficient, but generates a blurry effect. In order to deal with it, we introduce a mixed model that permits to get solutions with no staircasing and without blurry effect on details. In a second part, we take an interset to the texture extraction problem. A model known as one of the most efficient is the T V -L1 model. It just consits in replacing the L2 norm of the fitting data term with the L1 norm.We propose here an original way to solve this problem by the use of augmented Lagrangian methods. For the same reason than for the denoising case, we also take an interest to the T V 2-L1 model, replacing again the total variation of the function by the second order total variation. A mixed model for texture extraction is finally briefly introduced. This manuscript ends with a huge chapter of numerical tests
Frugier, Pierre Antoine. "Quantification 3D d’une surface dynamique par lumière structurée en impulsion nanoseconde. Application à la physique des chocs, du millimètre au décimètre." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112129.
Повний текст джерелаA Structured Light System (SLS) is an efficient means to measure a surface topography, as it features both high accuracy and dense spatial sampling in a strict non-invasive way. For these reasons, it became in the past years a technique of reference. The aim of the PhD is to bring this technique to the field of shock physics. Experiments involving shocks are indeed very specific: they only allow single-shot acquisition of extremely short phenomena occurring under a large range of spatial extensions (from a few mm to decimeters). In order to address these difficulties, we have envisioned the use of a well-known high-speed technique: pulsed laser illumination. The first part of the work deals with the evaluation of the key-parameters that have to be taken into account if one wants to get sharp acquisitions. The extensive study demonstrates that speckle effect and depth of field limitation are of particular importance. In this part, we provide an effective way to smooth speckle in nanosecond regime, leaving 14% of residual contrast. Second part introduces an original projective formulation for object-points reconstruction. This geometric approach is rigorous; it doesn’t involve any weak-perspective assumptions or geometric constraints (like camera-projector crossing of optical axis in object space). From this formulation, a calibration procedure is derived; we demonstrate that calibrating any structured-light system can be done by extending the Direct Linear Transformation (DLT) photogrammetric approach to SLS. Finally, we demonstrate that reconstruction uncertainties can be derived from the proposed model in an a priori manner; the accuracy of the reconstruction depends both on the configuration of the instrument and on the object shape itself. We finally introduce a procedure for optimizing the configuration of the instrument in order to lower the uncertainties for a given object. Since depth of field puts a limitation on the lowest measurable field extension, the third part focuses on extending it through pupil coding. We present an original way of designing phase components, based on criteria and metrics defined in Fourier space. The design of a binary annular phase mask is exhibited theoretically and experimentally. This one tolerates a defocus as high as Ψ≥±40 radians, without the need for image processing. We also demonstrate that masks designed with our method can restore extremely high defoci (Ψ≈±100 radians) after processing, hence extending depth of focus by amounts unseen yet. Finally, the fourth part exhibits experimental measurements obtained with the setup in different high-speed regimes and for different scales. It was embedded on LULI2000 high energy laser facility, and allowed measurements of the deformation and dynamic fragmentation of a sample of carbon. Finally, sub-millimetric deformations measured in ultra-high speed regime, on a cylinder of copper under pyrotechnic solicitation are presented
Частини книг з теми "Projection d’images"
Barnier, Martin. "Chapitre I. Projections d’images." In Bruits, cris, musiques de films, 27–36. Presses universitaires de Rennes, 2010. http://dx.doi.org/10.4000/books.pur.1455.
Повний текст джерелаNaugrette, Catherine. "Un fragment d’image se balade, ou la figure au fond du bois. À propos d’un tableau de Paolo Uccello et de sa projection dans un spectacle de Heiner Goebbels." In L'art de très près, 109–20. Presses universitaires de Rennes, 2012. http://dx.doi.org/10.4000/books.pur.54235.
Повний текст джерела