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Dissertations / Theses on the topic 'Octree'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Millar, Richard James. "Octree construction for imaging." Thesis, University of Ulster, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386237.

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2

Kim, Jaehyun 1970. "NC verification using octree." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9880.

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3

Ho, Sheung-Lai Sunny. "Solid modelling using linear octree representation." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24684.

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Object representation is the backbone of any solid modelling system. Hierarchical spatial decompositions of objects called octrees introduced very efficient algorithms for boolean set operations and some restricted classes of geometric transformations. Linear octrees, a compact encoding of the octrees, result in a significant reduction of storage requirements, and lead simpler algorithms for most modelling operations. This thesis investigates some properties of linear octrees with emphasis on object generation. By interpreting linear octree node digits as binary numbers, some simple conversi

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4

Flynn, Sean A. "Adaptive Fluid Simulation Using a Linear Octree Structure." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6837.

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An Eulerian approach to fluid flow provides an efficient, stable paradigm for realistic fluid simulation. However, its traditional reliance on a fixed-resolution grid is not ideal for simulations that simultaneously exhibit both large and small-scale fluid phenomena. Octree-based fluid simulation approaches have provided the needed adaptivity, but the inherent weakness of a pointer-based tree structure has limited their effectiveness. We present a linear octree structure that provides a significant runtime speedup using these octree-based simulation algorithms. As memory prices continue to dec

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5

黃永耀 and Wing-yiu Wong. "An octree and face oriented approach for NC machining." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1989. http://hub.hku.hk/bib/B3120899X.

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6

Shevelko, Alexander V. "Octree-based projection mesh generation for complex 'dirty' geometries." Thesis, University of Brighton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438531.

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Wong, Wing-yiu. "An octree and face oriented approach for NC machining /." [Hong Kong : University of Hong Kong], 1989. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12385852.

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8

Flajšingr, Petr. "Realistické zobrazování voxelových scén v reálném čase." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-449179.

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The subject of this thesis is an implementation of realistic rendering of voxel scenes using a graphics card. This work explains the fundamentals of realistic rendering and voxel representation of visual data. It also presents selected hierarchical structures usable for acceleration and describes the desing of a solution focusing on the representation of voxel data and their rendering. The thesis describes libraries created as part of the project and algorithms. It also evaluates time and memory requirements of the application along with graphical output.

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9

Dunstan, Steven Paul. "Octree solid modelling applications in geology and open pit design." Thesis, Imperial College London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296412.

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10

Sun, Che. "Many-Light Real-Time Global Illumination using Sparse Voxel Octree." Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-theses/1125.

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"Global illumination (GI) rendering simulates the propagation of light through a 3D volume and its interaction with surfaces, dramatically increasing the fidelity of computer generated images. While off-line GI algorithms such as ray tracing and radiosity can generate physically accurate images, their rendering speeds are too slow for real-time applications. The many-light method is one of many novel emerging real-time global illumination algorithms. However, it requires many shadow maps to be generated for Virtual Point Light (VPL) visibility tests, which reduces its efficiency. Prior solutio

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11

Mahmutyazicioglu, Emel. "Development Of An Octree Based Grid Coarsening And Multigrid Flow Solution." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612549/index.pdf.

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The multigrid technique is one of the most effective techniques to achieve the reduction of the CPU cost for flow solvers. The multigrid strategy uses the multilevel grids which are the coarsening subsets of fine grid. An explicit solver rapidly reduces the high frequency errors on the computational grids. Since high frequency errors on coarse grids correspond to low frequency errors on fine grids, cycling through the coarse grid levels rapidly reduces the errors ranging from high-to-low frequency. The aim of this study is, therefore, to accelerate SENSE3D solver developed by TUBITAK-SAGE by i

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12

PEIXOTO, ARUQUIA BARBOSA MATOS. "AN APPROXIMATION SCHEME FOR IMPLICIT SURFACES BY REDENING THE ASSOCIATED OCTREE POINTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=37195@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Neste trabalho é apresentado um método adaptativo de poligonalização de superfícies implícitas, a Grade Adaptativa, associado a uma octree como estrutura de dados. Os pontos da subdivisão dos cubos dessa octree não estão sempre no centro, como na definição clássica, porém mais próximos à superfície. Para obter essa característica, os valores da função são considerados na região de poligonalização. Os pontos da malha que aproximam a superfície são conectados utilizando as arest

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13

Labadens, Marc. "Visualisation de stimulations astrophysiques sur maillage à résolution adaptative de type "octree"." Palaiseau, Ecole polytechnique, 2014. http://www.theses.fr/2014EPXX0056.

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14

RAVINDRAN, ASHWIN. "AN OCTREE BASED GENETIC ALGORITHM FOR THREE-DIMENSIONAL PACKING OF IRREGULAR PARTS." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1046981543.

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15

Samant, Rutuja. "Support structure accessibility and removal in Additive Manufacturing using octree data structure." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439308253.

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16

Kåvemark, Nils, and Stevan Miloradovic. "Particle Systems : A Comparison Between Octree-based and Screen Space Particle Collision." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17230.

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Background. Real-time applications like video games use particle systems for special effects to add visual aesthetics and realism. However, when complex behaviour that requires interaction between particles and geometry is desired, problems arise. The developer has to choose between having consistent and precise collisions or higher performance. This thesis goes over two particle collision implementations that try to solve these problems. Objectives. The objective of this thesis is to create an application that has support for two collision methods and compare them on performance and accuracy

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Siraskar, Nandkumar S. "Adaptive Slicing in Additive Manufacturing Process using a Modified Boundary Octree Data Structure." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353155811.

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18

Chandra, B. R. Naveen. "Threaded octree structures for fast neighbor voxel processing in a parallel ray tracer." PDXScholar, 1990. https://pdxscholar.library.pdx.edu/open_access_etds/3978.

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In the field of Computer Graphics, Ray Tracing has so far been the the best algorithm for rendering of realistic three dimensional images created by mathematical models. Ray Tracing is also known for its very large computation times, where the computation depends on the picture resolution, the number of objects and the complexity of the scene.

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Weissig, Peter. "Properties of timebased local OctoMaps." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-226576.

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Autonomous navigation of our rough-terrain rovers implies the need of a good representation of their near surrounding. In order to archive this we fuse several of their sensors into one representation called OctoMap. But moving obstacles can produce artefacts, leading to untraversable re- gions. Furthermore the map itself is increasing in size while discovering new places. Even though we are only interested in the near surrounding of the rovers. Our approach to these problems is the usage of timestamps within the map. If a certai

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Taymans, Claire. "Solving Incompressible Navier-Stokes Equations on Octree grids : towards Application to Wind Turbine Blade Modelling." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0157/document.

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Le sujet de la thèse est le développement d'un outil numérique qui permet de modéliser l'écoulement autour des pales d'éoliennes. Nous nous sommes intéressés à la résolution des équations de Navier-Stokes en incompressible sur des maillages de type octree où les échelles plus petites en proche parois ont été modélisées par la méthode dite des wall functions. Un procédé d'adaptation automatique du maillage (AMR) a été développé pour affiner le maillage dans les zones où la vorticité est plus importante. Le modèle de structure d'une pale d'éolienne a été également implémenté et couplé avec le mo

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21

Medellin, Castillo Hugo Ivan. "Assembly-based rapid production of near net shape components through octree decomposition of 3D models." Thesis, Heriot-Watt University, 2005. http://hdl.handle.net/10399/118.

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22

Antoine, Mathieu. "Les techniques algorithmiques du codage Octree appliquées à l'analyse de volumes tridimensionnels de données numériques." Grenoble 1, 1988. http://www.theses.fr/1988GRE10042.

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Les principales techniques d'exploitation des donnees numeriques sur ordinateur sont introduites. Une methodologie d'analyse par synthese d'image et ses differentes mises en oeuvre algorithmiques sont decrites. Dans une deuxieme partie, il est presente l'etude d'un codage particulier des donnees : le codage octree. Son adaptation a la manipulation de volumes numeriques est discutee

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VELAYUTHAM, PRAKASH SANKAREN. "AN EFFICIENT ALGORITHM FOR CONVERTING POLYHEDRAL OBJECTS WITH WINGED-EDGE DATA STRUCTURE TO OCTREE DATA STRUCTURE." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1109366602.

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24

Sampath, Rahul Srinivasan. "A parallel geometric multigrid method for finite elements on octree meshes applied to elastic image registration." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29702.

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Thesis (Ph.D)--Computing, Georgia Institute of Technology, 2009.<br>Committee Chair: Vuduc, Richard; Committee Member: Biros, George; Committee Member: Davatzikos, Christos; Committee Member: Tannenbaum, Allen; Committee Member: Zhou, Hao Min. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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25

Liljeby, Jonas. "An evaluation of grid based broad phase collision detection for real time interactive environments." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9591.

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Detailed and exact collision detection for large amounts of objects has for a long time been a non real-time affair because of the immense amount of computations necessary. This was however not only because of the complexity of the algorithms but also because discussed of the computations would not have had to be done in the first place. This paper has through literature research and empirical testing examined two different broad phase approaches to object culling in a three dimensional environment. The aim of such a broad phase algorithm is to decrease the amount of computation heavy narrow p

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Larsson, Agnes. "Automatic Mesh Repair." Thesis, Linköpings universitet, Informationskodning, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-98734.

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To handle broken 3D models can be a very time consuming problem. Several methods aiming for automatic mesh repair have been presented in the recent years. This thesis gives an extensive evaluation of automatic mesh repair algorithms, presents a mesh repair pipeline and describes an implemented automatic mesh repair algorithm. The presented pipeline for automatic mesh repair includes three main steps: octree generation, surface reconstruction and ray casting. Ray casting is for removal of hidden objects. The pipeline also includes a pre processing step for removal of intersecting triangles and

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Mitteff, Eric. "AUTOMATED ADAPTIVE DATA CENTER GENERATION FOR MESHLESS METHODS." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2635.

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Meshless methods have recently received much attention but are yet to reach their full potential as the required problem setup (i.e. collocation point distribution) is still significant and far from automated. The distribution of points still closely resembles the nodes of finite volume-type meshes and the free parameter, c, of the radial-basis expansion functions (RBF) still must be tailored specifically to a problem. The localized meshless collocation method investigated requires a local influence region, or topology, used as the expansion medium to produce the required field derivatives. Te

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28

Lincoln, Luke. "Non-Iterative Three-Dimensional Reconstruction and Representation." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/376506.

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Three-dimensional reconstruction algorithms generate 3D data from twodimensional image or video data. The current focus of this research area is on iterative algorithms such as: feature matching/RANSAC, Iterative Closest Point, and other non-linear optimization strategies. These strategies tend to fail in scenes with few features or scenes which contain feature confusion. In 2D image registration research, feature matching is dominant but closed form solution based Fourier registration techniques have been proven to outperform them with increased robustness to under textured scenes and image n

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29

Hermansson, Albin. "View-Dependent Collision Detection and Response Using Octrees." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-12751.

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Context. Collision is a basic necessity in most simulated environments, especially video games, which demand user interaction. Octrees are a way to divide the simulated environments into smaller, more manageable parts,and is a hierarchical tree-structure, where each node has eight children. Octrees and similar tree-structural methods have been used frequently to optimize collision calculations and partition the objects in the 3D space. Objectives. The aim of this thesis is to find a way to further improve upon the octree structure, by using a two-level octree structure, and simplify the collis

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Bengtsson, Morgan. "Indoor 3D Mapping using Kinect." Thesis, Linköpings universitet, Datorseende, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-106145.

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In recent years several depth cameras have emerged on the consumer market, creating many interesting possibilities forboth professional and recreational usage. One example of such a camera is the Microsoft Kinect sensor originally usedwith the Microsoft Xbox 360 game console. In this master thesis a system is presented that utilizes this device in order to create an as accurate as possible 3D reconstruction of an indoor environment. The major novelty of the presented system is the data structure based on signed distance fields and voxel octrees used to represent the observed environment.<br>Un

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Peyron, Jacob. "Kameraoptimering från ett volymetriskt approximerat kvalitetsmått." Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-13648.

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Rörelseigenkänning (motion capture) med optiska mätsystem används i flera applikationer för översättning av positioner i det fysiska rummet till det virtuella. I det här arbetet approximeras den snittvolym som motsvarar vad två eller fler kameror ser i ett sådant optiskt mätsystem. Volymen approximeras med en octree-datastruktur som lagrar information om kvalitet för individuella delar i volymen. Datastrukturens associerade kvalitetsmått används i kombination med ett vinkelmått i ett senare delsteg för att optimera fram en kamerauppsättning med en genetisk algoritm. Volymapproximeringens konst

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Åklint, Richard, and Muhammad Farhan Khan. "Multidimensional Visualization of News Articles." Thesis, Linköpings universitet, Informationskodning, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-118707.

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Large data sets are difficult to visualize. For a human to find structures and understand the data, good visualization tools are required. In this project a technique will be developed that makes it possible for a user to look at complex data at different scales. This technique is obvious when viewing geographical data where zooming in and out gives a good feeling for the spatial relationships in map data or satellite images. However, for other types of data it is not obvious how much scaling should be done. In this project, an experimental application is developed that visualizes data in mult

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Adamsson, Marcus, and Aleksandar Vorkapic. "A comparison study of Kd-tree, Vp-tree and Octree for storing neuronal morphology data with respect to performance." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187026.

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In this thesis we investigated performance of Kdtree, Vptree and Octree for storing neuronal morphology data. Two naive list structures were implemented to compare with the space partition data structures. The performance was measured with different sizes of neuronal networks and different types of test cases. A comparison with focus on cache misses, average search time and memory usage was made. Furthermore, measurements gathered quantitative data about each data structure. The results showed significant difference in performance of each data structure. It was concluded that Vptree is more su

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Peron, Stephanie. "Méthode d'assemblage de maillages recouvrants autour de géométries complexes pour des simulations en aérodynamique compressible." Thesis, Paris, ENSAM, 2014. http://www.theses.fr/2014ENAM0026/document.

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La simulation numérique des écoulements (CFD) est largement utilisée aujourd'hui dans l'industrie aéronautique, de l'avant-projet à la conception des appareils. En parallèle, la puissance des calculateurs s'est accrue, permettant d'effectuer des simulations résolvant les équations de Navier-Stokes moyennées (RANS) dans un délai de restitution acceptable du point de vue industriel. Cependant, les configurations simulées sont de plus en plus complexes géométriquement, rendant la réalisation du maillage très coûteuse en temps humain. Notre objectif est de proposer une méthode permettant de simpli

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Raeli, Alice. "Solution of the variable coefficients Poisson equation on Cartesian hierarchical meshes in parallel : applications to phase changing materials." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0669/document.

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On s'interesse aux problèmes elliptiques avec coéficients variables à travers des interfaces intérieures. La solution et ses dérivées normales peuvent subir des variations significatives à travers les frontières intérieures. On présente une méthode compacte aux différences finies sur des maillages adaptés de type octree conçues pour une résolution en parallèle. L'idée principale est de minimiser l'erreur de troncature sur la discretisation locale, en fonction de la configuration du maillage, en rapprochant une convergence à l'ordre deux. On montrera des cas 2D et 3D des résultat liés à des app

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Kerbrat, Olivier. "Méthodologie de conception d'outillages modulaires hybrides basée sur l'évaluation quantitative de la complexité de fabrication." Phd thesis, Ecole centrale de nantes - ECN, 2009. http://tel.archives-ouvertes.fr/tel-00439589.

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Dans le contexte actuel de concurrence industrielle internationale, la diversité des produits proposés et leur complexité croissante imposent aux industriels de proposer des produits manufacturés innovants, de qualité, à moindre coût et dans des délais de plus en plus contraignants. Le marché de la fabrication d'outillages de mise en forme (moules d'injection, matrices d'emboutissage, etc) a fortement évolué. Les outillages doivent désormais être conçus et mis au point plus rapidement, être adaptables aux différentes variantes de produits et fabriqués à coût maîtrisé.<br /><br /> Ainsi, les ou

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Nilsson, Jonathan. "Utvärdering av algoritmer för bred kollisionsdetektering med hjälp av Boids algoritm." Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-15599.

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Denna studie gick ut på att jämföra tre olika algoritmer som har använts för bred kollisionsdetektering, dessa algoritmer var Kd-tree, Octree och Sweep and prune. Kd-tree och Octree är spatiala datastrukturer, d.v.s. att de hanterar objekt inom specifika volymer. Sweep and prune använder istället listor för att ta reda på om objekt kolliderar. Fokus låg på att se hur stor skillnad algoritmernas exekveringstid hade jämfört med ’brute force’-implementationen och jämfört med varandra. Det utfördes ett antal olika experiment på algoritmerna med ett antal olika inställningar för att kunna utvärdera

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Görig, Jan. "Model dynamické scény pro robota." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236440.

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This master's thesis focuses on representation of geometric information about the surrounding environment for robotic systems. Instead of a common point-cloud based representation, an environment model that stores information about objects described by bounding boxes and planes is proposed. These objects can be obtained from trained object detectors, planar surface detectors, etc. processing data from sensors (e.g. RGB-D camera). The information about the objects (position, etc.) stored in the model is constantly changing according to data obtained from detectors. The environment model is impl

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Ji, Wei. "Spatial Partitioning and Functional Shape Matched Deformation Algorithm for Interactive Haptic Modeling." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1226364059.

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Rasmussen, Johan, and David Nilsson. "Analys av punktmoln i tre dimensioner." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Datateknik och informatik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-36915.

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Syfte: Att ta fram en metod för att hjälpa mindre sågverk att bättre tillvarata mesta möjliga virke från en timmerstock. Metod: En kvantitativ studie där tre iterationer genomförts enligt Design Science. Resultat: För att skapa en effektiv algoritm som ska utföra volymberäkningar i ett punktmoln som består av cirka två miljoner punkter i ett industriellt syfte ligger fokus i att algoritmen är snabb och visar rätt data. Det primära målet för att göra algoritmen snabb är att bearbeta punktmolnet ett minimalt antal gånger. Den algoritm som uppfyller delmålen i denna studie är Algoritm C. Algoritm

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Blåwiik, Per. "Fusing Stereo Measurements into a Global 3D Representation." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177586.

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The report describes the thesis project with the aim of fusing an arbitrary sequence of stereo measurements into a global 3D representation in real-time. The proposed method involves an octree-based signed distance function for representing the 3D environment, where the geomtric data is fused together using a cumulative weighted update function, and finally rendered by incremental mesh extraction using the marching cubes algorithm. The result of the project was a prototype system, integrated into a real-time stereo reconstruction system, which was evaluated by benchmark tests as well as qualit

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Gueguen, Robin. "Virtualisation architecturale visuelle et auditive du théâtre antique d'Orange." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS163.

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Ce projet pluridisciplinaire initié par Sorbonne Université vise à apporter des solutions mathématiques et informatiques à des problèmes archéologiques. Il s’articule autour du théâtre antique d’Orange. Une étude documentaire poussée a permis de restituer ce monument sur le logiciel Blender. La maquette virtuelle du théâtre est composée de formes brutes, auxquelles sont affectés des éléments de détail non permanents, ce qui la rend très facilement modulable. En plus de pouvoir visualiser virtuellement le monument, ce projet vise à étudier son acoustique. Ainsi, un outil de calcul spécialement

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Krus, Kristofer. "Wave Model and Watercraft Model for Simulation of Sea State." Thesis, Linköpings universitet, Teoretisk Fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-102959.

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The problem of real-time simulation of ocean surface waves, ship movement and the coupling in between is tackled, and a number of different methods are covered and discussed. Among these methods, the finite volume method has been implemented in an attempt to solve the problem, along with the compressible Euler equations, an octree based staggered grid which allows for easy adaptive mesh refinement, the volume of fluid method and a variant of the Hyper-C advection scheme for compressible flows for advection of the phase fraction field. The process of implementing the methods that were chosen pr

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Pracuch, Michal. "Voxel Cone Tracing." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2016. http://www.nusl.cz/ntk/nusl-255300.

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This thesis deals with the global illumination in the scene by using Voxel Cone Tracing method. It is based on the voxelization of a triangle mesh scene. The voxels can be stored to a full regular 3D grid (texture) or to the hierarchic Sparse Voxel Octree for saving of the memory space. This voxel representation is further used for computations of the global indirect illumination in real time within normal triangle mesh scenes for more realistic final image. Values from the voxels are obtained by tracing cones from the pixels which we want to get illumination for.

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Kerbrat, Olivier. "Méthodologie de conception d'outillages modulaires hybrides basée sur l'évaluation quantitative de la compléxité de fabrication." Ecole Centrale de Nantes, 2009. http://www.theses.fr/2009ECDN0005.

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Alsegård, Adam. "Interactive out-of-core rendering and filtering of one billion stars measured by the ESA Gaia mission." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-151068.

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The purpose of this thesis was to visualize the 1.7 billion stars released by the European Space Agency, as the second data release (DR2) of their Gaia mission, in the open source software OpenSpace with interactive framerates and also to be able to filter the data in real-time. An additional implementation goal was to streamline the data pipeline so that astronomers could use OpenSpace as a visualization tool in their research. An out-of-core rendering technique has been implemented where the data is streamed from disk during runtime. To be able to stream the data it first has to be read, sor

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Буковський, Олександр Миколайович. "Графічний редактор для побудови 3D-моделі Voxel". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/34951.

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Кваліфікаційна робота включає пояснювальну записку (54 с., 19 рис., 2 табл., список використаної літератури з 15 найменувань, 3 додатки). Метою дипломного проєкту є розробка простого графічного редактору з використанням 3D моделі Voxel, який дозволяє дослідити можливості використання даної технології на сучасних персональних комп’ютерах. Розроблений графічний редактор дозволяє: створювати воксельну модель з існуючої моделі іншого типу; візуалізувати створені воксельні моделі; виконувати перетворення воксельних моделей з використанням буферів глибини. В процесі розробки були використані власн

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Talasu, Dharneesh. "Efficient fMRI Analysis and Clustering on GPUs." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322077186.

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Burian, František. "Tvorba multispektrálních map v mobilní robotice." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-233689.

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The dissertation deals with utilisation of multispectral optical measurement for data fusion that may be used for visual telepresence and indoor/outdoor mapping by heterogeneous mobile robotic system. Optical proximity sensors, thermal imagers, and tricolour cameras are used for the fusion. The described algorithms are optimised to work in real-time and implemented on CASSANDRA robotic system made by our robotic research group.

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Lacoste, Julien. "Préservation de détails par placage d'octree-textures." Phd thesis, Université de Pau et des Pays de l'Adour, 2008. http://tel.archives-ouvertes.fr/tel-00461725.

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Les applications graphiques tendent à offrir un rendu interactif de scènes 3D de plus en plus réaliste, résultant en partie de l'accroissement de la richesse géométrique des objets affichés. Le maillage de certains de ces objets est toutefois trop complexe au regard des capacités de traitement des cartes graphiques et doit donc être simplifié afin de conserver un bon niveau d'interactivité. Une méthode élégante pour pallier à la perte des détails les plus fins induits par la simplification consiste à les stocker sous forme de normales dans des textures de grande résolution et de les utiliser l

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