Дисертації з теми "3D visualisations"
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Sarton, Jonathan. "Visualisations interactives haute-performance de données volumiques massives : une approche out-of-core multi-résolution basée GPUs." Thesis, Reims, 2018. http://www.theses.fr/2018REIMS022/document.
Повний текст джерелаThese thesis studies are part of the PIA2 project 3DNeuroSecure. This one aims to provide a collaborative system of interactive multi-scale navigation within visual big data (VDB) with ultra-high definition (tera-voxels), potentially multimodal, 3D biomedical imaging as application framework. In addition, this system will be able to integrate a variety of processing and/or annotations (tags) through remote HPC resources. All of these treatments must be possible in an out-of-core context. Because of the visual big data, we have to decoupled the location of acquisition from ones of storage and high performance computation and from ones for the manipulation of the data (various connected devices, mobile or not, smartphone, PC, large display wall, virtual reality room ...). The streaming visualization will be adapted to the user device in terms of both resolution (Full HD to GigaPixel) and 3D rendering (classic rendering on 2D screens, stereoscopic with glasses or autostereoscopic without glasses). All these developments supported by the CReSTIC with the support of MaSCA (Maison de la Simulation de Champagne-Ardenne) can therefore be summarized as: - the definition and implementation of the data structures adapted to the out-of-core visualization of the targeted visual big data. - the adaptation of the specific treatments partners, like interactive 3D rendering, to these new data structures. - the technical architecture choices for the HPC and the virtualization of the navigation software application, to take advantage of "ROMEO", the local datacenter. The auto-/stereoscopic rendering with or without glasses will be operated within the MINT software of the "université de Reims Champagne-Ardenne"
Brunner, Thalia. "Suspension of disbelief: Animating believable 3D nebula visual effects utilising real-time technology." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/213208/1/Thalia_Brunner_Thesis.pdf.
Повний текст джерелаDare, Fadeke Taiye. "A novel methodology for e-learning space design in HEI campuses." Thesis, University of Wolverhampton, 2011. http://hdl.handle.net/2436/209931.
Повний текст джерелаMaselino, Prince. "Load balancing for parallel 3D visualisation." Thesis, University of Westminster, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442101.
Повний текст джерелаBoyle, John. "Using 3D graphics for database visualisation." Thesis, University of Aberdeen, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307951.
Повний текст джерелаTaylor, Ian. "'Dynamic scaling for three-dimensional information visualisation'." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324478.
Повний текст джерелаMao, Bo. "Visualisation and Generalisation of 3D City Models." Licentiate thesis, KTH, Geoinformatics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-24345.
Повний текст джерела3D city models have been widely used in different applications such as urban planning, traffic control, disaster management etc. Effective visualisation of 3D city models in various scales is one of the pivotal techniques to implement these applications. In this thesis, a framework is proposed to visualise the 3D city models both online and offline using City Geography Makeup Language (CityGML) and Extensible 3D (X3D) to represent and present the models. Then, generalisation methods are studied and tailored to create 3D city scenes in multi-scale dynamically. Finally, the quality of generalised 3D city models is evaluated by measuring the visual similarity from the original models.
In the proposed visualisation framework, 3D city models are stored in CityGML format which supports both geometric and semantic information. These CityGML files are parsed to create 3D scenes and be visualised with existing 3D standard. Because the input and output in the framework are all standardised, it is possible to integrate city models from different sources and visualise them through the different viewers.
Considering the complexity of the city objects, generalisation methods are studied to simplify the city models and increase the visualisation efficiency. In this thesis, the aggregation and typification methods are improved to simplify the 3D city models.
Multiple representation data structures are required to store the generalisation information for dynamic visualisation. One of these is the CityTree, a novel structure to represent building group, which is tested for building aggregation. Meanwhile, Minimum Spanning Tree (MST) is employed to detect the linear building group structures in the city models and they are typified with different strategies. According to the experiments results, by using the CityTree, the generalised 3D city model creation time is reduced by more than 50%.
Different generalisation strategies lead to different outcomes. It is important to evaluate the quality of the generalised models. In this thesis a new evaluation method is proposed: visual features of the 3D city models are represented by Attributed Relation Graph (ARG) and their similarity distances are calculated with Nested Earth Mover’s Distance (NEMD) algorithm. The calculation results and user survey show that the ARG and NEMD methods can reflect the visual similarity between generalised city models and the original ones.
QC 20100923
ViSuCity Project
Tang, Hui. "Méthodologies de visualisation 3D en imagerie médicale." Phd thesis, Université Rennes 1, 2008. http://tel.archives-ouvertes.fr/tel-00355629.
Повний текст джерелаL'uroscan fournit 3 à 4 volumes présentant une information complémentaire sur l'anatomie rénale. La première étape consiste à mettre en correspondance ces différents volumes par une technique de recalage rigide du volume rénal basée sur la maximisation locale de l'information mutuelle.
L'idée principale de ce mémoire de Thèse est de proposer une visualisation de l'anatomie rénale directement à partir de ces données fusionnées. Pour cela, une technique de classification statistique des données basée sur une modélisation de la distribution des valeurs par un mélange de Gaussiennes incluant une information spatiale a été développée. Différentes techniques de visualisation 3D ont ensuite été adaptées à la représentation de cette information et comparées entre-elles.
Les techniques de représentation de surfaces peuvent être accélérées par des procédures de simplifications de maillages. Dans ce cadre, nous avons proposé deux métriques de description de la surface basées sur les moments géométriques et pouvant être incluses dans une telle procédure.
Ces différentes solutions, même si elles ont été développées dans le cadre de la représentation des structures anatomiques rénale, sont suffisamment génériques pour être utilisées ou adaptées à d'autres organes ou à d'autres applications médicales.
Mao, Bo. "Visualisation and Generalisation of 3D City Models." Doctoral thesis, KTH, Geoinformatik och Geodesi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-48174.
Повний текст джерелаQC 20111116
ViSuCity
Green, Damian Alan. "Stratigraphic visualisation for archaeological investigation." Thesis, Brunel University, 2003. http://bura.brunel.ac.uk/handle/2438/2168.
Повний текст джерелаMuñoz, Álvaro Aranda. "Comparing 3D interfaces of virtual factories : an iconic 3D interface against an abstract 3D visualisation." Thesis, Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4115.
Повний текст джерелаThis thesis explores and compares two prototypes that present a visualisation of the process state of a factory. The first prototype presents a generic interface in which primitive 3D shapes convey the information of the factory status. The second prototype is complemented with specific and iconic 3D models of the factory that help the users associating the conveyed information to the factory flow. The motivation behind this dissertation is that the type of generic interface presented can lead to more reusable interfaces in the future.
Algharabat, Raed S. "Modelling 3D product visualisation for the online retailer." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4525.
Повний текст джерелаOttoson, Patrik. "Geographic Indexing and Data Management for 3D-Visualisation." Doctoral thesis, Stockholm : Tekniska högsk, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3235.
Повний текст джерелаNorberg, Amanda, and Elliot Rask. "3D visualisation of breast reconstruction using Microsoft HoloLens." Thesis, Uppsala universitet, Signaler och System, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-367277.
Повний текст джерелаJanols, Henrik. "Communicating long-span timber structures with 3D computer visualisation /." Luleå, 2005. http://epubl.luth.se/1402-1757/2005/30.
Повний текст джерелаHayat, Khizar. "Visualisation 3D adaptée par insertion synchronisée de données cachées." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2009. http://tel.archives-ouvertes.fr/tel-00400762.
Повний текст джерелаMahieddine, Mohammed. "Modélisation, visualisation et animation d'objets 3D : Approche orientée objets." nice, 1991. http://www.theses.fr/1991NICE4496.
Повний текст джерелаRozendaal, Ross. "Interactive visualisation using 3D graphics : an archaeological case study." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/4980.
Повний текст джерелаThe methods of displaying data from archaeological surveys are of considerable importance in representing realistic impressions of archaeological sites that few people are able to visit. In many cases, further study of a site is not possible at the location of the site. This would require that the surveyed data of the site be displayed in such a way as to be accurate and realistic as well as including interactive tools, enabling further studies. Traditional displays of archaeological data have been either in textual form or in the conventional hardcopy form of maps and drawings. With the advent of computers and computer graphics alternative methods of displaying the data have become possible. 3D graphics have become an important method of displaying archaeological data. In 1995 and 1996 the Department of Geomatics at the University of Cape Town participated in the survey of the 3.6 million year old hominid footprints in Tanzania. The survey was required for the documentation and study of the footprints. In order to facilitate this in 3D graphics, software packages that allowed user interactive tools to be included in the display had to be investigated. Methods of displaying the data also had to be investigated. Java3D was selected to create the 3D models and user interactive tools that included measurement tools, gradient tools and profile tools. These tools were created for the Laetoli footprints but were applicable in other archaeological displays as well.
Taylor, Simon. "3D visualisation of the laetoli footprints on the internet." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/4979.
Повний текст джерелаKabil, Alexandre. "CyberCOP 3D : visualisation 3D interactive et collaborative de l'état de sécurité d'un système informatique." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2019. http://www.theses.fr/2019IMTA0166.
Повний текст джерелаThe aim of this thesis was to study the use of Collaborative Virtual Environments (CVE) for the analysis of the state of security of computer systems, also called Cyber Situational Awareness (CSA). After studying CSA’s models and tools, we have had the opportunity to visit the Security Operations Centers (SOCs) of four industrial partners of the CyberCNI chair, in order to better understand the needs and expectations of cyber analysts. These visits were made as part of a collaborative activity analysis protocol and have allowed us to propose a model, the 3D Cyber-COP. Based on this model and a model of the WannaCry ransomware, we have developed a CVE and a simplified scenario engine that allows users to design their own alert analysis scenarios. We have also performed a usability evaluation of a virtual environment for alert analysis, with a panel of novice users
Trellet, Mikael. "Exploration et analyse immersives de données moléculaires guidées par la tâche et la modélisation sémantique des contenus." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS262/document.
Повний текст джерелаIn structural biology, the theoretical study of molecular structures has four main activities organized in the following scenario: collection of experimental and theoretical data, visualization of 3D structures, molecular simulation, analysis and interpretation of results. This pipeline allows the expert to develop new hypotheses, to verify them experimentally and to produce new data as a starting point for a new scenario.The explosion in the amount of data to handle in this loop has two problems. Firstly, the resources and time dedicated to the tasks of transfer and conversion of data between each of these four activities increases significantly. Secondly, the complexity of molecular data generated by new experimental methodologies greatly increases the difficulty to properly collect, visualize and analyze the data.Immersive environments are often proposed to address the quantity and the increasing complexity of the modeled phenomena, especially during the viewing activity. Indeed, virtual reality offers a high quality stereoscopic perception, useful for a better understanding of inherently three-dimensional molecular data. It also displays a large amount of information thanks to the large display surfaces, but also to complete the immersive feeling with other sensorimotor channels (3D audio, haptic feedbacks,...).However, two major factors hindering the use of virtual reality in the field of structural biology. On one hand, although there are literature on navigation and environmental realistic virtual scenes, navigating abstract science is still very little studied. The understanding of complex 3D phenomena is however particularly conditioned by the subject’s ability to identify themselves in a complex 3D phenomenon. The first objective of this thesis work is then to propose 3D navigation paradigms adapted to the molecular structures of increasing complexity. On the other hand, the interactive context of immersive environments encourages direct interaction with the objects of interest. But the activities of: results collection, simulation and analysis, assume a working environment based on command-line inputs or through specific scripts associated to the tools. Usually, the use of virtual reality is therefore restricted to molecular structures exploration and visualization. The second thesis objective is then to bring all these activities, previously carried out in independent and interactive application contexts, within a homogeneous and unique interactive context. In addition to minimizing the time spent in data management between different work contexts, the aim is also to present, in a joint and simultaneous way, molecular structures and analyses, and allow their manipulation through direct interaction.Our contribution meets these objectives by building on an approach guided by both the content and the task. More precisely, navigation paradigms have been designed taking into account the molecular content, especially geometric properties, and tasks of the expert, to facilitate spatial referencing in molecular complexes and make the exploration of these structures more efficient. In addition, formalizing the nature of molecular data, their analysis and their visual representations, allows to interactively propose analyzes adapted to the nature of the data and create links between the molecular components and associated analyzes. These features go through the construction of a unified and powerful semantic representation making possible the integration of these activities in a unique interactive context
El-Aff, Inhab Abdalla. "Visualisation of the electrical activities of the heart in 3D." Thesis, University of Salford, 2009. http://usir.salford.ac.uk/26652/.
Повний текст джерелаTreece, Graham Michael. "Volume measurement and surface visualisation in sequential freehand 3D ultrasound." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621171.
Повний текст джерелаPatera, Marianne. "The potential of 3D visualisation technology in art and design education." Thesis, Glasgow School of Art, 2009. http://radar.gsa.ac.uk/4735/.
Повний текст джерелаReynolds, Hayley Maria. "3D visualisation and analysis of skin lymphatic drainage patterns in melanoma." Thesis, University of Auckland, 2008. http://hdl.handle.net/2292/5792.
Повний текст джерелаWhole document restricted until September 2011, but available by request, use the feedback form to request access.
Wang, Chen. "Large-scale 3D environmental modelling and visualisation for flood hazard warning." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/3350.
Повний текст джерелаDobos, J. "Management and visualisation of non-linear history of polygonal 3D models." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1461400/.
Повний текст джерелаBerg, Madeleine Tamsin Lisa. "3D visualisation of melts at the conditions of Earth's deep interior." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/20400.
Повний текст джерелаDillenseger, Jean-Louis. "Visualisation Scientifique en médecine.Application à la visualisation de l'anatomie et à la visualisation en épileptologie clinique." Habilitation à diriger des recherches, Université Rennes 1, 2003. http://tel.archives-ouvertes.fr/tel-00130932.
Повний текст джерелаPour cela, une réflexion sur l'outil de visualisation a été menée afin de proposer un cadre bien défini qui puisse guider l'élaboration d'un outil de représentation répondant à une discipline et à une problématique particulière. Le point le plus original de cette réflexion concerne un essai de formalisation de l'évaluation de la performance des outils de visualisation.
Deux grands domaines d'application ont justement permis de démontrer la pertinence de ce cadre général de la visualisation :
- La visualisation générale de l'anatomie avec, dans un premier temps, la conception d'un outil générique de visualisation de données médicale, le lancer de rayons multifonctions. Cet outil a été ensuite étendu selon deux axes de recherche, d'une part l'intégration de modèles de connaissances dans la procédure de synthèse d'images et d'autre part, l'imagerie interventionnelle et plus particulièrement des applications en urologie.
- Les apports de la visualisation pour l'interprétation des données recueillies sur le patient épileptique et plus particulièrement l'élaboration d'outils complémentaires permettant une analyse progressive des mécanismes et structures impliqués dans la crise.
Ekberg, Fredrik. "An approach for representing complex 3D objects in GIS applied to 3D properties." Thesis, University of Gävle, Department of Technology and Built Environment, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-139.
Повний текст джерелаThe main problem that is addressed in this thesis is how to represent complex three-dimensional objects in GIS in order to render a more realistic representation of the real world. The goal is to present an approach for representing complex 3D objects in GIS. This is achieved by using commercial GIS (ArcGIS), applied to 3D properties. In order to get a clear overview of the state-of-the-art of 3D GIS and the current 3D cadastral situation a literature study was carried out. Based on this overview it can be concluded that 3D GIS still is in its initial phase. Current 3D GIS developments are mainly in the area of visualisation and animation, and almost nothing in the area of spatial analysis and attribute handling. Furthermore, the literature study reveals that no complete solution has been introduced that solves the problems involved in 3D cadastral registration. In several countries (e.g. Sweden, Denmark, Norway, Netherlands, Israel, and Australia) 3D properties exists in a juridical framework, but technical issues such as how to represent, store, and visualize 3D properties has not yet been solved. Some countries (Sweden, Norway, and Australia) visualize the footprints of 3D property units in a base map. This approach partly solves some technical issues, but can only represent 3D objects in a 2.5D environment. Therefore, research in how to represent complex objects in GIS as ‘true’ 3D objects is of great need.
This thesis will emphasize MultiPatch as a geographic representation method to represent complex 3D objects in GIS. A case study will demonstrate that complex objects can be visualized and analysed in a commercial GIS, in this case ArcGIS. Most commercial GIS software available on the market applies a 2.5D approach to represent 3D objects. The 2.5D approach has limitations for representing complex objects. There is therefore a need of finding new approaches to represent complex objects within GIS. The result shows that MultiPatch is not an answer to all the problems within 3D GIS but a solution to some of the problems. It still requires a lot of research in the field of 3D GIS, especially in development of spatial analysis capabilities.
Det huvudsakliga problemet i denna uppsats är hur komplexa tre-dimensionella objekt kan representeras i GIS för att återge verkligheten mer realistiskt. Målet är att presentera ett tillvägagångssätt för att representera komplexa 3D-objekt i GIS. Detta har uppnåtts genom att använda ett kommersiellt GIS tillämpat på 3D-fastigheter. En litteraturstudie har genomförts för att erhålla en klar översikt över det senaste inom 3D-GIS och över den aktuella situationen inom 3D-fastigheter. Grundat på översikten kan slutsatsen dras att 3D-GIS bara är i sin begynnelsefas. Den aktuella utvecklingen inom 3D-GIS har huvudsakligen fokuserat på visualisering och animering och nästan ingenting inom rumsliga analysmetoder och hantering av attribut. Litteraturstudien visar också att ingen fullständig lösning för de problem som finns inom 3D-fastighetsregistrering har introducerats. I flera länder, t.ex. Sverige, Danmark, Norge, Nederländerna, Israel och Australien, existerar 3D-fastigheter idag i juridiska termer, men de tekniska problemen som t.ex. hur 3D-fastigheter ska representeras, lagras och visualiseras har inte ännu lösts. Vissa länder (Sverige, Norge och Australien) visualiserar idag en projektion av 3D-fastigheterna på en fastighetskarta. Den här metoden löser endast några av de tekniska problemen och kan endast representera 3D-objekt i en 2,5D-miljö. Därför är forskning inom hur komplexa objekt kan representeras i GIS som s.k. ”sann” 3D av betydelse.
Den här uppsatsen framhäver MultiPatch som en datatyp för att representera komplexa 3D-objekt i GIS. En fallstudie visar att komplexa objekt kan visualiseras och analyseras i ett kommersiellt GIS, i det här fallet ArcGIS. De flesta kommersiella GIS som är tillgängliga på marknaden använder 2,5D-metoden för att representera 3D-objekt. 2,5D-metoden har vissa begränsningar för att representera komplexa objekt och därför finns det ett behov att finna nya tillvägagångssätt för att representera komplexa objekt inom GIS. Resultaten kommer att visa att MultiPatch inte är någon fullständig lösning till alla problem inom 3D-GIS men en lösning på några av problemen. Det krävs fortfarande mycket forskning inom 3D-GIS, särskilt inom utveckling av rumsliga analysmetoder.
Sjölund, Albin. "3D karta : visualisering av logistikdata." Thesis, Mittuniversitetet, Institutionen för informationssystem och –teknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-36579.
Повний текст джерелаData kan visas på flera olika sätt beroende på vilken typ av data det är och syftet med det som ska visas. Sogeti har kunder med logistik data som de vill använda för att visa sina kunder och besökare vad de arbetar med. Målet med det här projektet var att använda den här datan och visualisera den på en interaktiv 3D karta och skapa ett proof of concept för att visa hur basfunktionerna för kartan kan fungera. Tre olika ramverk för att skapa 3D kartor jämfördes och baserat på deras funktioner och efter att ha testat dem så valdes Arcgis till implementationen av ett proof of concept. Implementationen testades sedan för att se hur prestandan påverkades när fler objekt lades till kartan. Ramverk för att fortsatt utveckling tittades på men påverkade inte valet för att välja ett ramverk till proof of concept.
Wang, Nan. "Visualisation et interaction pour l’exploration et la perception immersive de données 3D." Thesis, Paris, ENMP, 2012. http://www.theses.fr/2012ENMP0090/document.
Повний текст джерелаThe objective in this case is not only to be realistic, but also to provide new and intelligible ways of model representation. This raises new issues in data perception. The question of perception of complex data, especially regarding visual feedback, is an open question, and it is the subject of this work. This PhD thesis studied the human perception in Immersive Virtual Environments of complex datasets, one of the applications is the scientific visualization of scalar values stemming from physics models, such as temperature distribution inside a vehicle prototype.The objective of the first part is to study the perceptive limits of volumetric rendering for the display of scientific volumetric data, such as a volumetric temperature distribution rendering using point cloud. We investigate the effect on the user perception of three properties of a point cloud volumetric rendering: point size, cloud density and near clipping plane position. We present an experiment where a series of pointing tasks are proposed to a set of users. User behavior and task completion time are evaluated during the test. The study allowed to choose the most suitable combination of these properties, and provided guidelines for volumetric data representation in VR immersive systems.In the second part of our work, we evaluate one interaction method and four display techniques for exploring volumetric datasets in virtual reality immersive environments. We propose an approach based on the display of a subset of the volumetric data, as isosurfaces, and an interactive manipulation of the isosurfaces to allow the user to look for local properties in the datasets. We also studied the influence of four different rendering techniques for isosurface rendering in a virtual reality system. The study is based on a search and point task in a 3D temperature field. User precision, task completion time and user movement were evaluated during the test. The study allowed to choose the most suitable rendering mode for isosurface representation, and provided guidelines for data exploration tasks in immersive environments
Lamontagne, Jerry. "Élaboration d'une interface graphique pour la visualisation 3D de modèles d'éléments finis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0015/MQ56757.pdf.
Повний текст джерелаWang, Nan. "Visualisation et interaction pour l'exploration et la perception immersive de données 3D." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00821004.
Повний текст джерелаGong, Weizhong. "Modular-MPC accelerators for cost-effective 3D visualisation based on surface rendering." Thesis, Brunel University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336643.
Повний текст джерелаMusa, Shahrulniza. "Visualising network security attacks with multiple 3D visualisation and false alert classification." Thesis, Loughborough University, 2008. https://dspace.lboro.ac.uk/2134/14241.
Повний текст джерелаNorth, Steve. "Clients' 3D visualisation of construction performance : from s-curves to data surfaces." Thesis, University College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406399.
Повний текст джерелаHe, Shuang. "Production et visualisation de niveaux de détail pour les modèles 3D urbains." Ecole centrale de Nantes, 2012. http://portaildocumentaire.citechaillot.fr/search.aspx?SC=theses&QUERY=+marie+Durand#/Detail/%28query:%28Id:%270_OFFSET_0%27,Index:1,NBResults:1,PageRange:3,SearchQuery:%28CloudTerms:!%28%29,ForceSearch:!t,Page:0,PageRange:3,QueryString:%27Shuang%20he%27,ResultSize:10,ScenarioCode:theses,ScenarioDisplayMode:display-standard,SearchLabel:%27%27,SearchTerms:%27Shuang%20he%27,SortField:!n,SortOrder:0,TemplateParams:%28Scenario:%27%27,Scope:%27%27,Size:!n,Source:%27%27,Support:%27%27%29%29%29%29.
Повний текст джерела3D city models have been increasingly used in a variety of urban applications as platforms to integrate and visualize diverse information. This work addresses level-of-detail production and visualization of 3D city models, towards their use in GIS applications. This work proposes a hybrid solution to LoD production of 3D city models, using a combination of techniques: extrusion, integration, generalization, and procedural modeling. The prerequisite for using our solution is to have data (like 2D cadastral buildings) for generating city coverage volumetric building models and data (like road network, administrative division, etc) for dividing the city into meaningful units. It can also gain advantage from using other accessible 2D and 3D models of city objects as many as possible. Because such requirements can be fulfilled at low cost, the solution may be easily adopted. The main focus of this work is placed on generalization techniques and algorithms. A generalization framework is proposed based on the divide-and-conquer concept, realized by land cover subdivision and cell-based generalization. The framework enables city scale generalization towards more abstract city models, and facilitates local scale generalization by grouping city objects according to city cells. An implementation of city scale generalization is realized based on the framework. A footprint-based approach is developed for generalizing 3D building groups at medium LoD, which can be used for local scale generalization. Moreover, using the LoD 3D city models produced by the proposed solution, three visualization examples are given to demonstrate some of the potential uses: multi-scale, focus + context, and view-dependent visualization
ROCHA, CRISTINA. "Visualisation scientifique en epilepsie : fusion de signaux electroencephalographiques en imagerie morphologique 3d." Rennes 1, 1997. http://www.theses.fr/1997REN10080.
Повний текст джерелаCoertze, Johannes A. "Visualisation and manipulation of 3D patient-specific bone geometry using augmented reality." Master's thesis, Faculty of Health Sciences, 2020. http://hdl.handle.net/11427/32211.
Повний текст джерелаPrat, Sylvain. "Compression et visualisation de grandes scènes 3D par représentation à base topologique." Rennes 1, 2007. http://www.theses.fr/2007REN1S039.
Повний текст джерелаIf visualization applications of 3D scenes are now widespread since the advent of powerful 3D graphics cards allowing real-time 3D rendering, the rendering of large 3D scenes remains problematic because of the too many 3D primitives to handle during the short period of time elapsing between two successive image frames. On the other hand, the democratisation of the Internet at home creates new needs, including the need to navigate into large 3D environments through a network. Applications are indeed numerous: video games, virtual tourism, geolocalization (GPS), virtual architecture, 3d medical imaging. . . Within this context, users exchange and share information regarding the virtual environment over the network. The subject of this thesis is in-between these two issues. We are interested in the special case of viewing virtual cities in a "communicating" fashion where 3D data pass over the network. This type of application raises two major problems: first, the selection of relevant data to be transmitted to the user, because it's too expensive to transmit the full 3D environment before the navigation starts; on the other hand, taking into account the network constraints: low bandwidth, latency, error tolerance. In this thesis, we propose several contributions: a generic compression method, suitable for the compression of volume meshes, a method for constructing and partitioning 3D urban scenes from buildings footprints, and an optimized method for building complex surfaces from a polygon soup
Chan, Warren. "An investigation of 3D visualisation and simulation systems for research and education." Thesis, Glasgow Caledonian University, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.688300.
Повний текст джерелаTang, Bo. "Image-based rendering for visualisation of 3D scenes in near real-time." Thesis, University of Central Lancashire, 2008. http://clok.uclan.ac.uk/19271/.
Повний текст джерелаWidell, Alex. "An expansion of the 3D rendering discussion." Thesis, Konstfack, Inredningsarkitektur & Möbeldesign, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-6282.
Повний текст джерелаVitale, Valeria. "Rethinking 3D visualisation : from photorealistic visual aid to multivocal environment to study and communicate cultural heritage." Thesis, King's College London (University of London), 2017. https://kclpure.kcl.ac.uk/portal/en/theses/rethinking-3d-visualisation(7079ff9d-6e19-4335-a3e6-fc53bf69620c).html.
Повний текст джерелаMcCreadie, Christopher Andrew. "Widening stakeholder involvement : exploiting interactive 3D visualisation and protocol buffers in geo-computing." Thesis, Abertay University, 2014. https://rke.abertay.ac.uk/en/studentTheses/c26f344f-29d1-4eea-8879-b83862c63143.
Повний текст джерелаJamin, Clément. "Algorithmes et structures de données compactes pour la visualisation interactive d’objets 3D volumineux." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10133.
Повний текст джерелаProgressive compression methods are now mature (obtained rates are close to theoretical bounds) and interactive visualization of huge meshes has been a reality for a few years. However, even if the combination of compression and visualization is often mentioned as a perspective, very few papers deal with this problem, and the files created by visualization algorithms are often much larger than the original ones. In fact, compression favors a low file size to the detriment of a fast data access, whereas visualization methods focus on rendering speed : both goals are opposing and competing. Starting from an existing progressive compression method incompatible with selective and interactive refinements and usable on small-sized meshes only, this thesis tries to reconcile lossless compression and visualization by proposing new algorithms and data structures which radically reduce the size of the objects while supporting a fast interactive navigation. In addition to this double capability, our method works out-of-core and can handle meshes containing several hundreds of millions vertices. Furthermore, it presents the advantage of dealing with any n-dimensional simplicial complex, which includes triangle soups or volumetric meshes
Christoph, Heilmair. "GPU-Based Visualisation of Viewshed from Roads or Areas in a 3D Environment." Thesis, Linköpings universitet, Informationskodning, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-130699.
Повний текст джерелаJones, Gareth. "Region classification for 3D visualisation : representing static and dynamic properties for medical diagnosis." Thesis, University of Sussex, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262626.
Повний текст джерелаDodo, Meva. "Etude de l'apport de la visualisation 3D interactive pour l'administration de systèmes complexe." Toulouse 3, 2008. http://thesesups.ups-tlse.fr/358/.
Повний текст джерелаThe aim of this thesis is to study new methods which allow to improve the understanding of complex systems' structure and to analyze the various events generated by its resources. Three-dimensional techniques are proposed to easy the analysis of the structure of complex systems. A new algorithm for drawing, in 3D, large graphs is proposed in order to optimize the layout of a complex structure. Our method is based on the optimization of the force-directed placement algorithm (FDP) that allows effectively and aesthetically displaying large graphs. Our second approach is to propose metaphors that allow to easily understand the different events generated by devices. This approach is based on the three attributes that define an event: "what, when, where", and it is associated with filtering techniques that choose interesting events according to the management needs