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Journal articles on the topic 'Raytracer'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Vasiljević, Ivana, and Lidija Krstanović. "TEORIJSKE OSNOVE I IMPLEMENTACIJA RAYTRACER ALGORITMA ZA RENDEROVANjE." Zbornik radova Fakulteta tehničkih nauka u Novom Sadu 34, no. 05 (2019): 978–81. http://dx.doi.org/10.24867/02sa01vasiljevic.

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Raytracer je algoritam globalnog osvetljenja koji se u današnje vreme koristi za kreiranje (renderovanje, eng. rendering) slika visokog stepena realističnosti. U osnovi, ideja je imitirati način realnog prostiranja svetlosti kroz prostor. Ako je prostor kroz koji se svetlost kreće homogen i izotropan, putanje svetlosti su prave linije. Dakle, problemu bi mogli pristupiti ovako: krenuvši od nekog izvora svetlosti pratili bismo kretanje jednog od zraka. Prilikom kretanja kroz prostor u jednom trenutku zrak bi došao do dioptrijskih površina i pritom se jedan njegov deo reflektuje, drugi prelama,

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2

Winchen, Tobias. "RadioPropa — A Modular Raytracer for In-Matter Radio Propagation." EPJ Web of Conferences 216 (2019): 03002. http://dx.doi.org/10.1051/epjconf/201921603002.

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Experiments for radio detection of UHE particles such as e.g. ARA/ARIANNA or NuMoon require detailed understanding of the propagation of radio waves in the surrounding matter. The index of refraction in e.g. polar ice or lunar rock may have a complex spatial structure that makes detailed simulations of the radio propagation necessary to design the respective experiments and analyse their data. Here, we present RadioPropa as a new modular ray tracing code that solves the eikonal equation with a Runge-Kutta method in arbitrary refractivity fields. RadioPropa is based on the cosmic ray propagatio

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3

Pontoppidan, Klaus M., Rowin Meijerink, Cornelis P. Dullemond, and Geoffrey A. Blake. "A NEW RAYTRACER FOR MODELING AU-SCALE IMAGING OF LINES FROM PROTOPLANETARY DISKS." Astrophysical Journal 704, no. 2 (2009): 1482–94. http://dx.doi.org/10.1088/0004-637x/704/2/1482.

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4

Henke, Michael, and Gerhard H. Buck-Sorlin. "Using a Full Spectral Raytracer for Calculating Light Microclimate in Functional-Structural Plant Modelling." Computing and Informatics 36, no. 6 (2017): 1492–522. http://dx.doi.org/10.4149/cai_2017_6_1492.

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5

Finger, Larry W., Martin Kroeker, and Brian H. Toby. "DRAWxtl, an open-source computer program to produce crystal structure drawings." Journal of Applied Crystallography 40, no. 1 (2007): 188–92. http://dx.doi.org/10.1107/s0021889806051557.

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The computer programDRAWxtlproduces crystal structure drawings in the form of an interactive screen representation, as well as VRML files for use on web pages and in classroom teaching, and creates input files for the popularPersistence of Vision Raytracer(POV-Ray) rendering program for publication-quality graphics, including generation of stereo pairs.DRAWxtloutput produces the standard kinds of graphical representations: spheres, ellipsoids, bonds and polyhedra of any complexity. In addition, it can draw arrows to represent magnetic moments, show capped cones to indicate the location of lone

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6

Walder, Cordula. "Optical modeling of thin-film silicon solar cells by combination of the transfer-matrix method and the raytracer algorithm." Optical Engineering 51, no. 7 (2012): 073801. http://dx.doi.org/10.1117/1.oe.51.7.073801.

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7

Sun, Mengyao, Jie Zhang, and Wei Zhang. "Alternating first-arrival traveltime tomography and waveform inversion for near-surface imaging." GEOPHYSICS 82, no. 4 (2017): R245—R257. http://dx.doi.org/10.1190/geo2016-0576.1.

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Near-surface seismic imaging often plays a significant role in producing quality data processing results for the deep subsurface in land and shallow marine environments. First-arrival traveltime tomography is a common approach for near-surface imaging due to its high efficiency and simplicity. However, the method faces issues of missing hidden layers and resolving the structures with low resolution. On the other hand, waveform inversion should offer better solutions for dealing with these issues, but it may suffer from the cycle-skipping problem. We intend to use the advantages and reduce the

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8

Baglivo, Cristina, Marina Bonomolo, and Paolo Maria Congedo. "Modeling of Light Pipes for the Optimal Disposition in Buildings." Energies 12, no. 22 (2019): 4323. http://dx.doi.org/10.3390/en12224323.

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A light pipe is an excellent solution to transport and distribute daylight into environments without or with little lighting, guaranteeing comfort inside the rooms. As stated in the literature, the evaluation of the performances of light pipes presents numerous complexities, making the work very difficult for technicians and designers. This study is aimed to present a methodology that is able to identify the potential of light pipes using indices such as daylight autonomy (DA), continuous daylight autonomy (DAc), and useful daylight illuminance (UDI). This paper presents an analysis of dayligh

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9

Kowalski, S. B., and H. A. Enge. "The ion-optical program raytrace." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 258, no. 3 (1987): 407. http://dx.doi.org/10.1016/0168-9002(87)90921-1.

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10

Khonkar, H. E. I., and A. A. M. Sayigh. "Raytrace for compound parabolic concentrator." Renewable Energy 5, no. 1-4 (1994): 376–83. http://dx.doi.org/10.1016/0960-1481(94)90400-6.

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11

Ferretti, G., D. Spallarossa, D. Bindi, P. Augliera, and M. Cattaneo. "Comparison of two “pseudo-bending” raytracers." Physics of the Earth and Planetary Interiors 123, no. 2-4 (2001): 115–26. http://dx.doi.org/10.1016/s0031-9201(00)00205-3.

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12

García-Botella, Angel, Lun Jiang, and Roland Winston. "Flowline Optical Simulation to Refractive/Reflective 3D Systems: Optical Path Length Correction." Photonics 6, no. 4 (2019): 101. http://dx.doi.org/10.3390/photonics6040101.

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Nonimaging optics is focused on the study of techniques to design optical systems for the purpose of energy transfer instead of image forming. The flowline optical design method, based on the definition of the geometrical flux vector J, is one of these techniques. The main advantage of the flowline method is its capability to visualize and estimate how radiant energy is transferred by the optical systems using the concepts of vector field theory, such as field line or flux tube, which overcomes traditional raytrace methods. The main objective this paper is to extend the flowline method to anal

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13

Dantzler, Andrew A. "Encircled energy correction method for raytrace programs." Applied Optics 27, no. 24 (1988): 5001. http://dx.doi.org/10.1364/ao.27.005001.

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14

Greivenkamp, John E., and Jim Schwiegerling. "Modeling Soft Contact Lenses in Raytrace Code." Applied Optics 34, no. 34 (1995): 8076. http://dx.doi.org/10.1364/ao.34.008076.

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15

Lindlein, Norbert. "Simulation of micro-optical array systems with RAYTRACE." Optical Engineering 37, no. 6 (1998): 1809. http://dx.doi.org/10.1117/1.601725.

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16

Eik, M., and H. Herrmann. "Raytraced images for testing the reconstruction of fibre orientation distributions." Proceedings of the Estonian Academy of Sciences 61, no. 2 (2012): 128. http://dx.doi.org/10.3176/proc.2012.2.05.

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17

Zawdie, K. A., J. D. Huba, D. P. Drob, and P. A. Bernhardt. "A coupled ionosphere-raytrace model for high-power HF heating." Geophysical Research Letters 42, no. 22 (2015): 9650–56. http://dx.doi.org/10.1002/2015gl066673.

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18

Leviton, Douglas B., and James W. Leitch. "Experimental and raytrace results for throat-to-throat compound parabolic concentrators." Applied Optics 25, no. 16 (1986): 2821. http://dx.doi.org/10.1364/ao.25.002821.

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19

YANAGAWA, Takumi, Hitoshi SAKAGAMI, Atsushi SUNAHARA, and Hideo NAGATOMO. "Implosion Simulation by Hydro Code Coupled with Laser Absorption using New Raytrace Algorithm." Plasma and Fusion Research 9 (2014): 3404090. http://dx.doi.org/10.1585/pfr.9.3404090.

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20

Liner, Christopher L. "Theory of a 2.5-D acoustic wave equation for constant density media." GEOPHYSICS 56, no. 12 (1991): 2114–17. http://dx.doi.org/10.1190/1.1443025.

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The theory of 2.5-dimensional (2.5-D) wave propagation (Bleistein, 1986) allows efficient computation of 3-D wavefields in c(x, z) acoustic media when the source and receivers lie in a common y-plane (assumed to be y = 0 in this paper). It is really a method of efficiently computing an inplane 3-D wavefield in media with one symmetry axis. The idea is to raytrace the wavefield in the (x, z)-plane while allowing for out‐of‐plane spreading. In this way 3-D amplitude decay is honored without 3-D ray tracing. This theory has its conceptual origin in work by Ursin (1978) and Hubral (1978). Bleistei

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21

Koch, Jeffrey A., Thomas P. Bernat, Gilbert W. Collins, et al. "Numerical Raytrace Verification of Optical Diagnostics of Ice Surface Roughness for Inertial Confinement Fusion Experiments." Fusion Science and Technology 43, no. 1 (2003): 55–66. http://dx.doi.org/10.13182/fst03-a249.

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22

Autio, Hanna, Nikolaos-Georgios Vardaxis, and Delphine Bard Hagberg. "The Influence of Different Scattering Algorithms on Room Acoustic Simulations in Rectangular Rooms." Buildings 11, no. 9 (2021): 414. http://dx.doi.org/10.3390/buildings11090414.

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Raytracing is a widespread tool for room acoustic simulations, and one of its main advantages is the inclusion of surface scattering. Although surface scattering has been acknowledged as a central aspect of accurate raytracing simulations for many years, there is ongoing research into its effects and how to implement it better. This study evaluates three different algorithms for surface scattering in raytracers, referred to as on–off scattering, perturbation scattering, and diffuse field scattering. Their theoretical foundation is discussed, and the physical accuracy of the resulting simulatio

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23

Vogel, J. K., M. J. Pivovaroff, B. Kozioziemski, et al. "Design and raytrace simulations of a multilayer-coated Wolter x-ray optic for the Z machine at Sandia National Laboratories." Review of Scientific Instruments 89, no. 10 (2018): 10G113. http://dx.doi.org/10.1063/1.5038811.

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24

Donovan, Benjamin D., Randall L. McEntaffer, Casey T. DeRoo, et al. "Performance Testing of a Large-Format X-ray Reflection Grating Prototype for a Suborbital Rocket Payload." Journal of Astronomical Instrumentation 09, no. 04 (2020): 2050017. http://dx.doi.org/10.1142/s2251171720500178.

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The soft X-ray grating spectrometer on board the Off-plane Grating Rocket Experiment (OGRE) hopes to achieve the highest resolution soft X-ray spectrum of an astrophysical object when it is launched via suborbital rocket. Paramount to the success of the spectrometer are the performance of the [Formula: see text] reflection gratings populating its reflection grating assembly. To test current grating fabrication capabilities, a grating prototype for the payload was fabricated via electron-beam lithography at The Pennsylvania State University’s Materials Research Institute and was subsequently te

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25

"Technology Tips: Creating Three-Dimensional Scenes." Mathematics Teacher 98, no. 6 (2005): 394–98. http://dx.doi.org/10.5951/mt.98.6.0394.

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In this month's “Technology Tips,” Norm Krumpe introduces readers to Persistence of Vision Raytracer (POV–Ray), a free computer program for creating photo–realistic, three–dimensional scenes. The first version of POVRay was created fifteen years ago, and the current version 3.6 is now available for most computer platforms, including Macintosh, Windows, and Linux. You can download the software for free, or you can order a CD–ROM copy from POV–Ray's main Web site, at povray.org.

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26

Sobota, Branislav, Štefan Korečko, Csaba Szabó, and František Hrozek. "Acceleration of ray tracing method using predictive evaluation and GPGPU technology." Open Computer Science 4, no. 3 (2014). http://dx.doi.org/10.2478/s13537-014-0221-6.

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AbstractRay tracing is one of computer graphics methods for achieving the most realistic outputs. Its main disadvantage is high computation demands. Removal of this disadvantage is possible using parallelization due to the fact that the ray tracing method is inherently parallel. Solution presented in this article uses GPGPU (general-purpose computing on graphics processing units) technology and a predictive evaluation for the acceleration of ray tracing method. The CUDA C was selected as a GPGPU language and it was used for a conversion of a raytracer core. The main reason for choosing this la

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27

Geißendörfer, Stefan, Karsten von Maydell, and Carsten Agert. "Numerical 3D-Simulation of Micromorph Silicon Thin Film Solar Cells." MRS Proceedings 1321 (2011). http://dx.doi.org/10.1557/opl.2011.934.

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ABSTRACTIn this contribution 1, 2 and 3-dimensional simulations of micromorph silicon solar cells are presented. In order to simulate solar cells with rough interfaces, the surface topographies were measured via atomic force microscopy (AFM) and transferred into the commercial software Sentaurus TCAD (Synopsys). The model of the structure includes layer thicknesses and optoelectronic parameters like complex refractive index and defect structure. Results of the space resolved optical generation rates by using of the optical solver Raytracer are presented. The space resolved optical generation r

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28

Do-Duc, Hao, and Vinh Ngo-Quang. "Analyzing Data Reusability of Raytrace Application in Splash2 Benchmark." International Journal of Advanced Computer Science and Applications 7, no. 7 (2016). http://dx.doi.org/10.14569/ijacsa.2016.070762.

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29

"STUDY OF SOLAR BASED VERTICAL FARMING SYSTEMS WITH RAYTRACED DAYLIGHTING ANALYSIS AND VISUALIZATIONS." Carpathian Journal of Food Science and Technology, December 31, 2020, 21–30. http://dx.doi.org/10.34302/crpjfst/2020.12.4.3.

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30

"STUDY OF SOLAR BASED VERTICAL FARMING SYSTEMS WITH RAYTRACED DAYLIGHTING ANALYSIS AND VISUALIZATIONS." Carpathian Journal of Food Science and Technology, December 31, 2020, 21–30. http://dx.doi.org/10.34302/crpjfst/2020.12.4.3.

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