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Dissertations / Theses on the topic 'Ray tracing'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Hošek, Václav. "Distributed Ray Tracing." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235956.

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VYSOKÉ UČENÍ TECHNICKÉ V BRNĚ Distributed Ray Tracing, also called distribution ray tracing and stochastic ray tracing, is a refinement of ray tracing that allows for the rendering of "soft" phenomena, area light, depth of field and motion blur.

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2

Yun, Garam. "Polarization Ray Tracing." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/202979.

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A three-by-three polarization ray tracing matrix method is developed to calculate the polarization transformations associated with ray paths through optical systems. The relationship between the three-by-three polarization ray tracing matrix P method and the Jones calculus is shown in Chapter 2. The diattenuation, polarization dependent transmittance, is calculated via a singular value decomposition of the P matrix and presented in Chapter 3. In Chapter 4 the concept of retardance is critically analyzed for ray paths through optical systems. Algorithms are presented to separate the effects of

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3

Huss, Niklas. "Real Time Ray Tracing." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-9207.

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Ray tracing has for a long time been used to create photo realistic images, but due to complex calculations done per pixel and slow hardware, the time to render a frame has been counted in hours or even days and this can be drawback if a change of a scene cannot be seen instantly. When ray tracing a frame takes less than a second to render we call it “real time ray tracing” or “interactive ray tracing” and many solutions have been developed and some involves distributing the computation to different computers interconnected in a very fast network (100 Mbit or higher). There are some drawbacks

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4

Spjut, Josef Bo. "Efficient ray tracing architectures." Thesis, The University of Utah, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3727095.

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<p> This dissertation presents computer architecture designs that are efficient for ray tracing based rendering algorithms. The primary observation is that ray tracing maps better to independent thread issue hardware designs than it does to dependent thread and data designs used in most commercial architectures. While the independent thread issue causes extra overhead in the fetch and issue parts of the pipeline, the number of computation resources required can be reduced through the sharing of less frequently used execution units. Furthermore, since all the threads run a single program on mul

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5

Trendall, Chris. "Ray tracing refraction in hardware." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0016/MQ49742.pdf.

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6

Kukla, Michal. "Ray-tracing s knihovnou IPP." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237265.

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Master thesis is dealing with design and implementation of ray-tracing and path-tracing using IPP library. Theoretical part discusses current trends in acceleration of selected algorithms and also possibilities of parallelization. Design of ray-tracing and path-tracing algorithm and form of parallelization are described in proposal. This part also discusses implementation of adaptive sampling and importance sampling with Monte Carlo method to accelerate path-tracing algorithm. Next part is dealing with particular steps in implementation of selected rendering methods regarding IPP library. Impl

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7

Watson, Andre James. "Diffraction gratings in ray tracing." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p1464665.

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Thesis (M.S.)--University of California, San Diego, 2009.<br>Title from first page of PDF file (viewed July 7, 2009). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 66-67).

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8

McNeill, Michael D. J. "Ray tracing on multiprocessor systems." Thesis, University of Sussex, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357267.

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9

Polášek, Tomáš. "Hybridní raytracing v rozhraní DXR." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403161.

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The goal of this thesis is to evaluate the usability of hardware accelerated ray tracing in near-future rendering engines. Specifically, DirectX Ray Tracing API and Nvidia Turing architecture are being examined. Design and implementation of a hybrid rendering engine with support for hardware accelerated ray tracing is included and used in implementation of frequently used graphical effects -- hard and soft shadows, reflections, and Ambient Occlusion. The assessment is made in terms of difficulty of integration into a rendering engine, performance of the resulting system and suitability of impl

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10

Kroeze, Jan Cornelis Willem. "Tracing rays the past, present and future of ray tracing performance / Jan Cornelis Willem Kroeze." Thesis, North-West University, 2010. http://hdl.handle.net/10394/8525.

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The metrics used to compare the performance of various ray tracers in the literature are flawed because they are non-standard and depend on the hardware configuration of the specific system used to gather data. A different way of measuring the relative performance of ray tracing algorithms is proposed and tested across several hardware platforms using correlation co-efficient.<br>Thesis (M.Sc. (Computer Science) North-West University, Vaal Triangle Campus, 2011

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11

Sennersten, Charlotte. "Gameplay (3D Game Engine + Ray Tracing = Visual Attention through Eye Tracking)." Licentiate thesis, Karlskrona : School of Technoculture, Humanities and Planning, Blekinge Institute of Technology, 2008. http://www.bth.se/fou/Forskinfo.nsf/allfirst2/e0fc9eb5eccc5468c12574d400432db2?OpenDocument.

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12

Löw, Joakim. "Ray Tracing Bézier Surfaces on GPU." Thesis, Linköping University, Department of Mathematics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5476.

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<p>In this report, we show how to implement direct ray tracing of B´ezier surfaces on graphics processing units (GPUs), in particular bicubic rectangular Bézier surfaces and nonparametric cubic Bézier triangles. We use Newton’s method for the rectangular case and show how to use this method to find the ray-surface intersection. For Newton’s method to work we must build a spatial partitioning hierarchy around each surface patch, and in general, hierarchies are essential to speed up the process of ray tracing. We have chosen to use bounding box hierarchies and show how to implement stackless tra

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13

Hilbert, Stefan Johannes. "Ray-Tracing through the Millennium Simulation." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-85684.

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14

Kimura, Ryota, and Ryota Kimura. "Accelerated Ray Tracing for Headlamp Simulation." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/626712.

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High speed ray tracing for a headlamp lens and advanced algorithms for ray analysis are investigated. First, the basics of ray tracing, Algorithm to search intersection points between a ray and surfaces and refraction are reviewed, including intersection search for a ray with aspheric surfaces. A spherical surface, a plane surface, and a point cloud are reviewed as objects. Snell’s law is introduced from Fermat’s principle in 2D. Then, it extended to three dimensional spaces. Second, photometry is reviewed for the post processing of ray tracing, due to the convolution effect of its area.

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15

Bezerianos, Anastasia. "Using projection to accelerate Ray Tracing." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62959.pdf.

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16

McCanna, Anju Sharma. "Ray tracing for constructive solid modeling /." Online version of thesis, 1990. http://hdl.handle.net/1850/10579.

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17

Abdelsabor, Sohier Goma. "Ray tracing for computer synthesized images." Virtual Press, 1988. http://liblink.bsu.edu/uhtbin/catkey/539621.

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Ray tracing is a very powerful yet simple approach to image synthesis. It has generated some of the most realistic scenes to date. A comparative study of classical ray tracing, ray tracing with cones, and distributed ray tracing is made.The ray tracing techniques, classical ray tracing, ray tracing with cones, and distributed ray tracing, are explained, their differences are emphasized, and their approaches to modeling various lighting effects are explained and compared.<br>Department of Computer Science

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18

Lebovitz, Marc A. (Marc Adam) 1975. "A prediction model for ray tracing." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/80095.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, June 1999.<br>Includes bibliographical references (leaf 86).<br>by Marc A. Lebovitz.<br>M.Eng.

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19

Hebert, Marie-Pierre. "A multiprocessor architecture for ray tracing." Thesis, University of Sussex, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302731.

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20

Slovák, Radek. "Distributed Ray Tracing v rozumném čase." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-237023.

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This thesis deals with the method of distributed ray tracing focusing on optimalization of this method. The method uses simulation of some attributes of light by distributing rays of lights and it produces high quality and partly realistic images. The price for realitic effects is the high computational complexity of the method. The thesis analysis the theory connected with these aspects. A large part describes optimalizations of this method, i.e. searching for the nearest triangle intersection using kd-trees, quasi random sampling with faster convergence, the use of SSE instruction set and fa

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21

Källén, Christoffer. "Acoustic Ray tracing in urban environments." Thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211160.

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This is the report of the development of a program written in MATLAB to study the propagation of sound waves using Smit’s ray tracing algorithm. The final program is able to use the data from vectorized maps to build a three-dimensional landscape and calculate the reflections at each interception point when a ray emitted from the source hits the surface of an obstacle.Another goal is to make use of all the cores, physical and logical, a modern CPU has to offer. This is to make sure the calculations are made as fast as possible. In order to meet this criteria the MATLAB Parallel Computing Toolb

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22

Urra, Rodrigo A. "Scalable ray tracing with multiple GPGPUs /." Online version of thesis, 2009. http://hdl.handle.net/1850/8705.

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23

Spackman, John Neil. "Scene decompositions for accelerated ray tracing." Thesis, University of Bath, 1989. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329580.

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24

Ecoublet, Philippe. "Bent-ray travel-time tomography and migration without ray tracing." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263006.

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25

Ullmann, Thomas. "Vertex tracing - interaktives ray tracing durch adaptiv progressives Refinement im Objektraum." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=974936189.

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26

Es, S. Alphan. "Accelerated Ray Tracing Using Programmable Graphics Pipelines." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609307/index.pdf.

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The graphics hardware have evolved from simple feed forward triangle rasterization devices to flexible, programmable, and powerful parallel processors. This evolution allows the researchers to use graphics processing units (GPU) for both general purpose computations and advanced graphics rendering. Sophisticated GPUs hold great opportunities for the acceleration of computationally expensive photorealistic rendering methods. Rendering of photorealistic images in real-time is a challenge. In this work, we investigate efficient ways to utilize GPUs for real-time photorealistic rendering. Specific

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27

Bailey, Henry Albert. "Ray tracing techniques for indirect refracted illumination." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37789.pdf.

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28

Wang, Xiaomei. "Efficient ray tracing of many light sources." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq43409.pdf.

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29

Dreux, M. de A. "A hybrid scan-line/ray-tracing algorithm." Thesis, Brunel University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233395.

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30

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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31

Perales, Remigio. "Parallel ray tracing for real time animation." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36961.

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32

Santos, Eduardo Toledo. "Extensões ao algoritmo de 'RAY TRACING' parametrizado." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-13022004-114755/.

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Ray tracing é um algoritmo para a síntese de imagens por computador. Suas características principais são a alta qualidade das imagens que proporciona (incorporando sombras, reflexões e transparências entre outros efeitos) e, por outro lado, a grande demanda em termos de processamento. O ray tracing parametrizado é um algoritmo baseado no ray tracing, que permite a obtenção de imagens com a mesma qualidade a um custo computacional dezenas de vezes menor, porém com restrições. Estas restrições são a necessidade de geração de um arquivo de dados inicial, cujo tempo de processamento é pouco maior

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33

Enfeldt, Viktor. "Real-Time Ray Tracing With Polarization Parameters." Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-19667.

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Background. The real-time renderers used in video games and similar graphics applications do not model the polarization aspect of light. Polarization parameters have previously been incorporated in some offline ray-traced renderers to simulate polarizing filters and various optical effects. As ray tracing is becoming more and more prevalent in real-time renderers, these polarization techniques could potentially be used to simulate polarization and its optical effects in real-time applications as well. Objectives. This thesis aims to determine if an existing polarization technique from offline

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34

Lindau, Ludvig. "Hardware accelerated ray tracing of particle systems." Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20231.

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Background. Particle systems are a staple feature of most modern renderers. There are several technical challenges when it comes to rendering transparent particles. Particle sorting along the view direction is required for proper blending and casting shadows from particles requires non-standard shadow algorithms. A recent technology that could be used to adress these technical challenges is hardware accelerated ray tracing. However there is a lack of performance data gathered from this type of hardware. Objectives. The objective of this thesis is to measure the performance of a prototype that

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35

Schaubach, Kurt Richard. "Microcellular radio channel prediction using ray tracing." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09122009-040308/.

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36

Jadi, Tjah. "Implementing ray tracing algorithm in parallel environment." PDXScholar, 1989. https://pdxscholar.library.pdx.edu/open_access_etds/3935.

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Ray tracing is a very popular rendering algorithm in the field of computer graphics because it can generate highly-realistic images from three-dimensional models. Unfortunately, the computational cost is very expensive. To speed up the rendering process we present both static and dynamic scheduling (balancing) strategies for a multiprocessor system. Hence, the load balancing among the processors is the most important problem in parallel processing. The implementation of the algorithm is based on a modified octree structure.

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37

Lam, Wai Sze Tiffany. "Anisotropic Ray Trace." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/556957.

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Optical components made of anisotropic materials, such as crystal polarizers and crystal waveplates, are widely used in many complex optical system, such as display systems, microlithography, biomedical imaging and many other optical systems, and induce more complex aberrations than optical components made of isotropic materials. The goal of this dissertation is to accurately simulate the performance of optical systems with anisotropic materials using polarization ray trace. This work extends the polarization ray tracing calculus to incorporate ray tracing through anisotropic materials, includ

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38

Ernst, Manfred. "Ray tracing techniques for hybrid and photorealistic rendering /." Erlangen : Dept. Informatik, 2009. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=018644254&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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39

Baumann, Gisela. "Ray-tracing in non-radial envelopes of protostars." Zürich : Institute of Astronomy, Eidgenössische Technische Hochschule Zürich, 2006. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=264.

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40

Haggren, Simon. "Mikrovågssimulering med realtidsljus : Realtids-ray tracing i CUDA." Thesis, Högskolan i Skövde, Institutionen för kommunikation och information, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4391.

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Detta arbete undersöker möjligheterna med att simulera mikrovågor i ett slutet system. Systemet implementeras med en redan befintlig teknik kallad ray tracing. Ray tracing är en ljussättningsteknik som går ut på att simulera fotoners rörelse mellan ljuskälla och betraktare i en miljö man önskar ljussätta, och sedan belysa de områden som blir träffade för att på detta vis rendera en bild. Fotoner och mikrovågor har egenskaper som liknar varandra då de båda är elektromagnetism med olika våglängder. Ray tracing är en krävande algoritm då många uträkningar för varje foton måste utföras varje uppda

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41

Andersson, Filip Lars Roland. "Real-Time Ray Tracing on the Cell Processor." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-95303.

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The first ray casting algorithm was introduced as early as 1966 and was followed by the first ray tracing algorithm in 1979. Since then many revisions to both these algorithms have been presented along with the strong development of computer processors. For a very long time both ray casting and ray tracing were associated with rendering of single images. One single image could take several hours to compute and to date still can for very complex scenes. Only during the last few years have attempts to write algorithms for real time been made. This thesis focuses on the question of how a real tim

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42

Coulthurst, David James. "Ray tracing methods fo hybrid global illumination algorithms." Thesis, University of Bristol, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555616.

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Global illumination algorithms provide a way to model the different light transport phenomena seen in real life, and produce accurate images. The amount of computation to achieve accurate rendering is large, resulting in the development of many different ways of speeding it up. Some of these focus on speeding up the basic processes of rendering, such as ray tracing operations, and some on leveraging parallel hardware to speed up rendering. Two novel algorithms of this type are described in this thesis. One to allow incoherent paths to be efficiently be traced in parallel by offsetting the late

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43

Nasedkin, Alexandr. "Tracing Molecular Conformations by X-ray Solution Scattering." Doctoral thesis, Uppsala universitet, Fysikalisk kemi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-230563.

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In the present work the refinement of X-ray data have been used to solve different scientific problems, namely drug localization in the liposome wall, reaction kinetics of the small molecule upon excitation and resolving an ensemble of protein structures at different temperatures. The common approach included collection of X-ray scattering patterns, modelling of the system of interest in atomic level and fitting computed results to experimental data. Employed fitting algorithms varied depends on the application ranging from inverse matrix calculations to the genetic algorithm for complex tasks

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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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Reinhard, Erik. "Scheduling and data management for parallel ray tracing." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302169.

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46

Goh, Eng Lim. "Parallel architectures with fast ray-tracing image synthesis." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335748.

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47

Glazer, Brendon C. (Brendon Charles) 1975. "Interactive ray tracing of VRML scenes in Java." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80539.

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Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Includes bibliographical references (leaves 69-70).<br>by Brendon C. Glazer.<br>S.B.and M.Eng.

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48

Kurita, Hiroyuki 1958. "Interferometric aspheric surface testing using ray tracing code." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/276944.

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Phase shifting interferometry is one of the most promising methods for testing aspheres. However, one will encounter the following problems when it is applied to test an asphere: (1) very tight fringes produced by a strong asphere exceed the test system's resolution, (2) a test wavefront suffers from system aberrations of the interferometer that cause measurement errors, and (3) the wavefront immediately after reflection does not necessarily represent the shape of the test asphere. This thesis used a high density array sensor to detect the dense fringes. In order to solve the system aberration

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49

Faria, Antonio Augusto Araujo. "Radio propagação indoor utilizando ray tracing força bruta." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259673.

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Orientador: Michel Daoud Yacoub<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-07-22T10:45:59Z (GMT). No. of bitstreams: 1 Faria_AntonioAugustoAraujo_M.pdf: 5745129 bytes, checksum: 9f92969853a8b36b71f883f7524c5ce4 (MD5) Previous issue date: 1996<br>Resumo: Este trabalho utiliza um método ray-tracing para a predição de cobertura no interior de edifícios em um único andar. Algumas inovações foram acrescentadas a um modelo existente, como a abordagem estatística para o cálculo do excesso de per

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Santos, Eduardo Toledo. "Avaliação do algoritmo de "ray tracing" em multicomputadores." Universidade de São Paulo, 1994. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-31032004-123720/.

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A Computação Gráfica, área em franco desenvolvimento, têm caminhado em busca da geração, cada vez mais rápida, de imagens mais realísticas. Os algoritmos que permitem a síntese de imagens realísticas demandam alto poder computacional, fazendo com que a geração deste tipo de imagem, de forma rápida, requeira o uso de computadores paralelos. Hoje, a técnica que permite gerar as imagens mais realísticas é o "ray tracing" . Os multicomputadores, por sua vez, são a arquitetura de computadores paralelos mais promissora na busca do desempenho computacional necessário às aplicações modernas. Esta diss

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