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Dissertations / Theses on the topic 'Dynamic ray tracing'

Author: Grafiati
Published: 29 June 2021
Last updated: 29 July 2025

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1

SANTOS, PAULO IVSON NETTO. "RAY TRACING DYNAMIC SCENES ON THE GPU." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=31443@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>O objetivo deste trabalho é desenvolver uma solução completa para o traçado de raios de cenas dinâmicas utilizando a GPU. Para que este algoritmo atinja desempenho interativo, é necessário utilizar uma estrutura espacial para reduzir os testes de interseção entre raios e triângulos da cena. Observa-se que, quando há movimento na cena, é necessário atualizar esta estrutura de aceleração, seja alterando-a parcialmente ou reconstruindo-a inteiramente. Adotamos a segunda estratégia por ser capaz de tratar o caso geral de movimento não-estrutura
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2

Samothrakis, Stavros Nikolaou. "Acceleration techniques in ray tracing for dynamic scenes." Thesis, University of Sussex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241671.

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3

Günther, Johannes Verfasser], and Philipp [Akademischer Betreuer] [Slusallek. "Ray tracing of dynamic scenes / Johannes Günther. Betreuer: Philipp Slusallek." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2014. http://d-nb.info/1061022463/34.

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4

Chang, Chen Hao Jason. "The study of energy consumption of acceleration structures for dynamic CPU and GPU ray tracing." Worcester, Mass. : Worcester Polytechnic Institute, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-010807-140122/.

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5

Sjöberg, Joakim, and Filip Zachrisson. "A Performance Comparison of Dynamic- and Inline Ray Tracing in DXR : An application in soft shadows." Thesis, Blekinge Tekniska Högskola, Fakulteten för datavetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-21833.

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Background. Ray tracing is a tool that can be used to increase the quality of the graphics in games. One application in graphics that ray tracing excels in is generating shadows because ray tracing can simulate how shadows are generated in real life more accurately than rasterization techniques can. With the release of GPUs with hardware support for ray tracing, it can now be used in real-time graphics applications to some extent. However, it is still a computationally heavy task requiring performance improvements. Objectives. This thesis will evaluate the difference in performance of three ra
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6

Minkara, Rania. "Locating wireless base stations within a dynamic indoor environment." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.681053.

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The mobility that wireless communication offers to users, added to the ease of installation have increased the demand on such communication systems. However, the main drawback of wireless communication is the degradation of the signal as it travels through the channel due to the different propagation mechanisms the signal undergoes. To minimise the effect of the channel and get the best service, the base stations must be appropriately located within the environment. This requires proper knowledge of the channel characteristics. Ray tracing software is used throughout this work to generate the
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7

Frid, Kastrati Mattias. "Hybrid Ray-Traced Reflections in Real-Time : in OpenGL 4.3." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-10427.

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Context. Reaching photo realistic results when rendering 3D graphics in real-time is a hard computational task. Ray-tracing gives results close to this but is too expensive to be run at real-time frame rates. On the other hand rasterized methods such as deferred rendering are able to keep the tight time constraints with the support of modern hardware. Objectives. The basic objective is to merge deferred rendering and ray-tracing into one rasterized pipeline for dynamic scenes. In the thesis the proposed method is explained and compared to the methods it merges. Image quality, execution time an
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8

Heidari, Mohammad. "Identification and modeling of the dynamic behavior of the direct path component in ToA-based indoor localization systems." Worcester, Mass. : Worcester Polytechnic Institute, 2008. http://www.wpi.edu/Pubs/ETD/Available/etd-071508-195549/.

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Dissertation (Ph.D.)--Worcester Polytechnic Institute.<br>Keywords: Ray Tracing; Wideband Measurement; Dynamic Modeling of Ranging Error; ToA-Based Indoor Localization; NLoS Identification. Includes bibliographical references (leaves 147-159).
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9

Loyet, Raphaël. "Dynamic sound rendering of complex environments." Phd thesis, Université Claude Bernard - Lyon I, 2012. http://tel.archives-ouvertes.fr/tel-00995328.

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De nombreuses études ont été menées lors des vingt dernières années dans le domaine de l'auralisation.Elles consistent à rendre audible les résultats d'une simulation acoustique. Ces études se sont majoritairementfocalisées sur les algorithmes de propagation et la restitution du champ acoustique dans desenvironnements complexes. Actuellement, de nombreux travaux portent sur le rendu sonore en tempsréel.Cette thèse aborde la problématique du rendu sonore dynamique d'environnements complexes selonquatre axes : la propagation des ondes sonores, le traitement du signal, la perception spatiale du s
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Turk, Jeffrey A. "Acceleration techniques for the radiative analysis of general computational fluid dynamics solutions using reverse Monte-Carlo ray tracing." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-09192008-063033/.

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11

Moghimi, Ardekani Mohammad. "Optical thermal and economic optimisation of a linear Fresnel collector." Thesis, University of Pretoria, 2017. http://hdl.handle.net/2263/61313.

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Solar energy is one of a very few low-carbon energy technologies with the enormous potential to grow to a large scale. Currently, solar power is generated via the photovoltaic (PV) and concentrating solar power (CSP) technologies. The ability of CSPs to scale up renewable energy at the utility level, as well as to store energy for electrical power generation even under circumstances when the sun is not available (after sunset or on a cloudy day), makes this technology an attractive option for sustainable clean energy. The levelised electricity cost (LEC) of CSP with thermal storage was about 0
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12

Ono, Tomohiro. "Development of new irradiation techniques using gimbaled x-ray head." Kyoto University, 2016. http://hdl.handle.net/2433/215379.

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13

Rink, Jochen C. "Rab-domain dynamics in endocytic membrane trafficking." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2005. http://nbn-resolving.de/urn:nbn:de:swb:14-1117095871452-66763.

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Eukaryotic cells depend on cargo uptake into the endocytic membrane system, which comprises a functionally interconnected network of endosomal compartments. The establishment and maintenance of such diverse compartments in face of the high rates of exchange between them, poses a major challenge for obtaining a molecular understanding of the endocytic system. Rab-GTPases have emerged as architectural key element thereof: Individual family members localize selectively to endosomal compartments, where they recruit a multitude of cytoplasmic effector proteins and coordinate them into membrane sub-
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14

Slootweg, Marcel. "Numerical performance analysis of novel solar tower receiver." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/70354.

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Concern over the altering climate due to the release of anthropogenic greenhouse gases has caused a major shift in the developments of ways to minimise human impact on the climate. Solar energy is seen as one of the most promising sources to transform the energy market for low-carbon energy generation. Currently, solar power is generated via photovoltaic (PV) and concentrating solar power (CSP) technologies. The advantage of CSPs to scale up renewable energy to utility level, as well as to store thermal energy for electrical power generation when the sun is not available (after sunset or durin
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15

Breuillard, Hugo. "Détermination des distributions d’ondes de type choeur dans la magnétosphère interne de la Terre et leurs conséquences sur la dynamique de la ceinture de radiation externe." Thesis, Orléans, 2012. http://www.theses.fr/2012ORLE2081/document.

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Les ondes de type choeur sont parmi les ondes électromagnétiques les plus intenses observées dans la magnétosphère interne de la Terre, et jouent un rôle crucial dans la dynamique des ceintures de radiation terrestres qui est un enjeu majeur de la météorologie de l’espace. Elles sont en effet responsables de l’accélération et la perte des électrons énergétiques qui peuplent notamment la ceinture externe. Or, les satellites ne peuvent couvrir entièrement la magnétosphère interne, et les données de ces ondes sont pauvres dans certaines régions. Le but de cette thèse est donc de pouvoir compléter
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16

Griffin, Daniel Joe. "The extension of a non-hydrostatic dynamical core into the thermosphere." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/34335.

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The non-hydrostatic dynamical core ENDGame (Even Newer Dynamics for the General Atmospheric Modelling of the Environment) is extended into the thermosphere to test its feasability as a whole-atmosphere dynamical core that can simulate the large scale fluid dynamics of the whole atmosphere from the surface to the top of the thermosphere at 600km. This research may have applications in the development of a Sun-to-Earth modelling system involving the Met Office Unified Model, which will be useful for space weather forecasting and chemical climate modelling. Initial attempts to raise the top bound
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17

Temperley, Neil Colin Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Optimisation of an Ultrasonic Flow Meter Based on Experimental and Numerical Investigation of Flow and Ultrasound Propagation." Awarded by:University of New South Wales. School of Mechanical and Manufacturing Engineering, 2002. http://handle.unsw.edu.au/1959.4/22044.

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This thesis presents a procedure to optimise the shape of a coaxial transducer ultrasonic flow meter. The technique uses separate numerical simulations of the fluid flow and the ultrasound propagation within a meter duct. A new flow meter geometry has been developed, having a significantly improved (smooth and monotonic) calibration curve. In this work the complex fluid flow field and its influence on the propagation of ultrasound in a cylindrical flow meter duct is investigated. A geometric acoustics (ray tracing) propagation model is applied to a flow field calculated by a commercial Com
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18

Zubal, Miloš. "Realistická animace kouře." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2007. http://www.nusl.cz/ntk/nusl-412803.

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This work makes basic analysis of historical and current algorithms for smoke animation. Modern approaches to rendering volumetric data are briefly described. We choose algorithms for implementation on basis of this analysis. These algorithms are described in detail and we make emphasis on their important properties according to dedication of this work. Detailed description of implementation follows along with performance measurement. Conclusion evaluates results of work and proposes possible extensions.
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19

Andrienko, Daniil. "Non-equilibrium Models for High Temperature Gas Flows." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1405505300.

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20

Pujol, Nadal Ramon. "Comportamiento Óptico y Térmico de un Concentrador Solar Lineal con reflector estacionario y Foco Móvil." Doctoral thesis, Universitat de les Illes Balears, 2012. http://hdl.handle.net/10803/84115.

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El concentrador solar Fixed Mirror Solar Concentrator (FMSC) apareció en los años 70 con la finalidad de reducir costes en la producción de energía termoeléctrica. Este diseño consiste en un concentrador de reflector estacionario y foco móvil, presenta buena integrabilidad en cubiertas, y es capaz de alcanzar temperaturas entre 100 y 200ºC manteniendo una eficiencia aceptable. En esta tesis se expone una metodología para determinar el comportamiento del FMSC. Se ha desarrollado una herramienta de cálculo basada en el método de ray-tracing, que simula el trazado de los rayos solares en el sis
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21

Dutheil, Yann. "Modélisation de la dynamique de spin dans l'AGS basée sur une méthode de résolution pas-à-pas du mouvement." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GRENY013/document.

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L'AGS fournit un faisceau de proton polarisé à RHIC. Le faisceau est accéléré dans l'AGS de Gγ = 4.5 à Gγ = 45.5 et la transmission de la polarisation est critique pour le programme de spin de RHIC. Au cours des dernières années, divers systèmes ont été mis en œuvre pour améliorer la transmission de la polarisation dans l'AGS. Ces améliorations consistent essentiellement en l'introduction de deux serpents Siberien partiels et du system de saut de nombre d'onde. Cependant, la transmission de la polarisation n'atteint pas encore 100 % durant le cycle d'accélération de l'AGS. L'efficacité actelle
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22

Ibarrart, Loris. "Description en espaces de chemins et méthode de Monte Carlo pour les transferts thermiques couplés dans les structures fluides et solides, une approche compatible avec l'informatique graphique." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2020. http://www.theses.fr/2020EMAC0009.

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Les travaux présentés dans ce manuscrit abordent la thématique du couplage des transferts thermiques. En particulier, ils s’inscrivent dans une réflexion actuelle autour de l’échantillonnage de chemins aléatoires par la méthode de Monte Carlo. Ce choix est justifié par un souhait d’obtenir des algorithmes ne présentant pas de contraintes sur la complexité des géométries étudiées. En effet, l’utilisation conjointe de ce type d’approches statistiques et des outils d’accélération de la synthèse d’image (grilles accélératrices) permet d’ores et déjà une résolution exacte du t
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23

Sarthou, Arthur. "Méthodes de domaines fictifs d'ordre élevé pour les équations elliptiques et de Navier-Stokes. Application au couplage fluide-structure." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2009. http://tel.archives-ouvertes.fr/tel-00460206.

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La simulation de cas réalistes d'écoulements ou de transferts thermiques implique souvent l'utilisation d'obstacles ou d'interfaces de forme complexe. De part leur manque de flexibilité, les maillages structurés ne sont pas initialement adaptés au traitement d'interfaces irrégulières, ces dernières coïncidant rarement avec les lignes du maillage. Afin de permettre à l'approche structurée de traiter des interfaces complexes avec précision, des méthodes dites de domaines fictifs sont nécessaires. La première contribution de cette thèse est une nouvelle méthode de travail sur maillage curviligne
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24

Navrátil, Paul Arthur. "Memory-efficient, scalable ray tracing." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-08-1982.

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Ray tracing is an attractive rendering option because it can produce high quality images that faithfully represent physically-based phenomena. Its embarrassingly parallel nature makes it a natural choice for rendering large-scale scene data, especially on machines that lack specialized graphics hardware. Unfortunately, the traditional recursive ray tracing algorithm is exceptionally memory inefficient for large scenes, especially when using a shading model that generates incoherent secondary rays. Queueing ray tracers have been shown to control scene state under these conditions, but they allo
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25

Yang, Wen Tai, and 楊文泰. "A New Ray Tracing Algorithm for Radiosity under Dynamic Environments." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/76607621726389778432.

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碩士<br>中原大學<br>資訊工程研究所<br>83<br>In the study of computer graphics, radiosity could simulate the real environment. It is important to produce a computer synthetical image by radiosity. But the effect of ray tracing is better than traditional radiosity on specular reflection and occlusion detection. Therefore, it is a new research tendency to combine the ray tracing and the radiosity to simulate real environment. A new method will be proposed to simulate real environment realistically and quic
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26

Hong, Qi-Hao, and 洪啟豪. "2D Grid Based Acceleration Methods for Ray Tracing in Dynamic Scenes." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/03911752897014821534.

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27

Huai-En, Jen, and 任懷恩. "An Improved Method for 2D Grid Based Ray Tracing in Dynamic Scenes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/38732168271758108537.

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28

Wei, Chen Shih, and 陳世偉. "Advanced 2D Grid Based Acceleration Methods for Ray Tracing in Dynamic Scenes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/78126787271463911558.

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29

Wan, Ting Yang, and 楊琬婷. "Ray Tracing Dynamic Scenes by Restructuring the Bounding Volume Hierarchy with Hybrid Nodes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/68853535699461047762.

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30

Jung, Lin Chun, and 林俊戎. "A Method for Accelerating Ray Tracing without Data Structure Reconstruction in Dynamic Scenes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/30575454892896295764.

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31

Chang, Chen-Hao, and 張誠豪. "Algorithm and System Architecture Design of Whitted-style Ray Tracing for Dynamic Scenes." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/22168146091711066058.

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碩士<br>臺灣大學<br>電子工程學研究所<br>98<br>Ray tracing is an algorithm for synthesizing a realistic image in 3D computer graph- ics. The advantage of this algorithm is supporting not only the visibility of scene and shadow but also indirect lighting effects such as reflection and refraction. However, the computation complexity of ray tracing is very large due to large number of ray- primitive intersections especially for rendering the indirect lighting effect. Although there are many accelerating algorithms using data special structures to accelerate the tracing process, the real time performance is stil
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32

Koch, Max. "Laser cavitation bubbles at objects: Merging numerical and experimental methods." Doctoral thesis, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-1516-B.

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