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DIRT: Deferred Image-based Ray Tracing [article]

Konstantinos Vardis, Andreas-Alexandros Vasilakis, Georgios Papaioannou
2016 High Performance Graphics  
We introduce a novel approach to image-space ray tracing ideally suited for the photorealistic synthesis of fully dynamic environments at interactive frame rates.  ...  An extensive experimental study is finally offered showing that our method advances the area of image-based ray tracing under the constraints posed by arbitrarily complex and animated scenarios.  ...  and the Traversal stage, where arbitrary rays are traced and the light transport is resolved in a breadth-first, iterative manner.  ... 
doi:10.2312/hpg.20161193 dblp:conf/egh/VardisVP16 fatcat:n5sdlptunravpaslcsmsjohrs4

Adaptive radiosity textures for bidirectional ray tracing

Paul S. Heckbert
1990 Computer graphics  
We use a three-pass, bidirectional ray tracing algorithm that traces rays from both the lights and the eye.  ...  textures; and the "eye pass" traces rays from the eye, collecting light from diffuse surfaces to make a picture.  ...  He follows this with a classic ray tracing pass (implemented using a z-buffer).  ... 
doi:10.1145/97880.97895 fatcat:vswzz6x2bve7fl6amqv772m7vq

Adaptive radiosity textures for bidirectional ray tracing

Paul S. Heckbert
1990 Proceedings of the 17th annual conference on Computer graphics and interactive techniques - SIGGRAPH '90  
We use a three-pass, bidirectional ray tracing algorithm that traces rays from both the lights and the eye.  ...  textures; and the "eye pass" traces rays from the eye, collecting light from diffuse surfaces to make a picture.  ...  He follows this with a classic ray tracing pass (implemented using a z-buffer).  ... 
doi:10.1145/97879.97895 dblp:conf/siggraph/Heckbert90 fatcat:zgd67kmkdfe23huvplycflq4ie

Specular Effects on the GPU: State of the Art

László Szirmay-Kalos, Tamás Umenhoffer, Gustavo Patow, László Szécsi, Mateu Sbert
2009 Computer graphics forum (Print)  
We establish a taxonomy of methods based on the three main different ways of representing the scene and computing ray intersections with the aid of the GPU, including ray tracing in the original geometry  ...  , ray tracing in the sampled geometry, and geometry transformation.  ...  This work has been supported by the National Office for Research and Technology, Hewlett-Packard, OTKA K-719922 (Hungary), TIN2007-67120 and TIN2007-68066-C04-01 from the Spanish Government, and by the  ... 
doi:10.1111/j.1467-8659.2009.01350.x fatcat:ueltm7a3pfcbdebw3bvxbpcpeu

The Graphics Processing Unit [chapter]

2008 Real-Time Rendering, Third Edition  
Ray Tracing and Monte Carlo Ray Tracing Ray tracing was first introduced in 1968 [16] and was popularized for computer graphics around 1980 by Whitted [32] .  ...  One way to index the photons by the cell they are stored in is to sort the cells and find the first photon in each cell using breadth first search.  ...  the GPU for normals Gluint texBuffer; // this is the id on the GPU for tex coords Gluint indexBuffer; // this is the id on the GPU for the index // Loading the data buffers with the vertex data vertexBuffer  ... 
doi:10.1201/b10644-4 fatcat:uapz6piglzb2bgfq5srxmunfza

gkDtree: A group-based parallel update kd-tree for interactive ray tracing

Yoon-Sig Kang, Jae-Ho Nah, Woo-Chan Park, Sung-Bong Yang
2013 Journal of systems architecture  
acceleration data structure called gkDtree for interactive ray tracing of dynamic scenes.  ...  The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.  ...  Acknowledgements We thank very much Jeong-Soo Park and anonymous reviewers for the valuable comments that help improve our manuscript. The Conference scene is courtesy of Greg Ward.  ... 
doi:10.1016/j.sysarc.2011.06.003 fatcat:4za5dpccpzfynfgdyc2jt2jxta

Line Drawings from 3D Models [article]

Pierre Bénard, Aaron Hertzmann
2019 arXiv   pre-print
The geometry of occluding contours on meshes and on smooth surfaces is described in detail, together with algorithms for extracting contours, computing their visibility, and creating stylized renderings  ...  The tutorial brings together and organizes material that, at present, is scattered throughout the literature. It also includes some novel explanations, and implementation tips.  ...  Acknowledgements We thank Doug DeCarlo for comments on a draft of this tutorial, and a reviewer for extremely detailed comments.  ... 
arXiv:1810.01175v2 fatcat:23jyjtvbfjem7eq46mo2rbct4e

Line Drawings from 3D Models: A Tutorial

Pierre Bénard, Aaron Hertzmann
2019 Foundations and Trends in Computer Graphics and Vision  
The geometry of occluding contours on meshes and on smooth surfaces is described in detail, together with algorithms for extracting contours, computing their visibility, and creating stylized renderings  ...  The tutorial brings together and organizes material that, at present, is scattered throughout the literature. It also includes some novel explanations, and implementation tips.  ...  We can compare the generative theory to the world before and after Newtonian mechanics.  ... 
doi:10.1561/0600000075 fatcat:vfuxfjozhbgjrkcburw4geuvrq

DNA-nanoparticle superlattices formed from anisotropic building blocks

Matthew R. Jones, Robert J. Macfarlane, Byeongdu Lee, Jian Zhang, Kaylie L. Young, Andrew J. Senesi, Chad A. Mirkin
2010 Nature Materials  
Shape is an important parameter that affects the properties of a particle, and therefore the incorporation of anisotropic nanostructures into colloidal crystals should lead to materials with as yet undiscovered  ...  the concept of valency 19-21 , and through anisotropic interactions resulting from particle shape 13,22 .  ...  Reprints and permissions information is available online at http://npg.nature.com/reprintsandpermissions. Correspondence and requests for materials should be addressed to C.A.M.  ... 
doi:10.1038/nmat2870 pmid:20890281 fatcat:cvzynouzmbg7vpbqaltgdiic4q

Physicochemical Characterization of a Crude Anthocyanin Extract from the Fruits of Jussara (Euterpe edulis Martius): Potential for Food and Pharmaceutical Applications

Laura Favaro, Victor Balcão, Liliam Rocha, Erica Silva, José Oliveira Jr., Marta Vila, Matthieu Tubino
2018 Journal of the Brazilian Chemical Society  
The results gathered suggest that the crude anthocyanin extracts had both obvious antioxidant activity and radical scavenging effects with the DPPH assay, and light antibacterial activity against Staphylococcus  ...  The physico-chemical characteristics of the crude anthocyanin extracts were evaluated via Fourier transform infrared spectrophotometry, X-ray diffraction, X-ray fluorescence, computed tomography via X-ray  ...  The 3D images possessed 1024 × 1024 × 1024 pixels and the same spatial resolution of the 2D images, and thus the volume of data generated for the fruit is isotropic with relation to the spatial resolution  ... 
doi:10.21577/0103-5053.20180082 fatcat:agdeitrgfbap5jj2yu3uige5da

Detecting Holes in Point Set Surfaces

Gerhard H. Bendels, Ruwen Schnabel, Reinhard Klein
2006 Journal of WSCG  
An international journal of algorithms, data structures and techniques for computer graphics and visualization, surface meshing and modeling, global illumination, computer vision, image processing and  ...  pattern recognition, computational geometry, human interaction and virtual reality, animation, multimedia systems and applications in parallel, distributed and mobile environment.  ...  ACKNOWLEDGEMENTS This project has been funded in part with Gametools project from the European VIth Framework, with grant number TIN2004-07451-C03-01 from the Spanish Government and with Hungarian-Spanish  ... 
dblp:journals/jwscg/BendelsSK06 fatcat:w5s6pqx5sreffjnrxg7dz43nda

Photodynamic therapy at ultra-low NIR laser power and X-Ray imaging using Cu3BiS3 nanocrystals

Srivani Veeranarayanan, M. Sheikh Mohamed, Aby Cheruvathoor Poulose, Masuko Rinya, Yasushi Sakamoto, Toru Maekawa, D. Sakthi Kumar
2018 Theranostics  
High-performance PDT of cancer and high-contrast x-ray imaging of tumor were performed in vivo. Biocompatibility of the NCs was also assessed in vivo.  ...  Conclusion: Their extended in vivo biodistribution with commendable hemo-and histo-compatibilities, along with imaging and multi-therapeutic capabilities, project these Cu 3 BiS 3 NCs as promising, prospective  ...  The authors would like to thank Ms.  ... 
doi:10.7150/thno.25286 fatcat:abhd2xiubrba7f5ghnyfi2qhfi

The Future of Gamma-Ray Experiments in the MeV-EeV Range [article]

Kristi Engel, Jordan Goodman, Petra Huentemeyer, Carolyn Kierans, Tiffany R. Lewis, Michela Negro, Marcos Santander, David A. Williams, Alice Allen, Tsuguo Aramaki, Rafael Alves Batista, Mathieu Benoit (+87 others)
2022 arXiv   pre-print
Gamma-rays with energies from the MeV to the EeV band are therefore central to multiwavelength and multi-messenger studies to everything from astroparticle physics with compact objects, to dark matter  ...  Gamma-ray astrophysics is so complementary with collider work that particle physicists and astroparticle physicists are often one in the same.  ...  gamma-ray emission (tracing the cosmicray distribution, matter, and radiation fields in the Galaxy).  ... 
arXiv:2203.07360v1 fatcat:bo2azt7w5vfqljygupbsu643lm

Steerable illumination textures

Michael Ashikhmin, Peter Shirley
2002 ACM Transactions on Graphics  
The new basis lights are shown to produce images of high visual quality with as few as 49 basis textures.  ...  This lighting includes shadowing and interreflection. To create an image with a new light direction, only a linear combination of precomputed textures is required.  ...  This could be performed in a Reyes-style renderer [Cook et al. 1987 ], ray tracing, or z-buffer environment.  ... 
doi:10.1145/504789.504790 fatcat:gke55uiyxbeopf6wcegxiwhvai

The synthesis and structural requirements for measuring glucocorticoid receptor expression in vivo with (±)-11C-YJH08 PET

Yangjie Huang, Ning Zhao, Yung-hua Wang, Charles Truillet, Junnian Wei, Matthew F.L. Parker, Joseph E. Blecha, Christopher R. Drake, Henry F. VanBrocklin, Diego G. Ruiz, Matthew P. Jacobson, Rahul Aggarwal (+5 others)
2020 Journal of Nuclear Medicine  
Conclusion: In summary, these studies reveal the molecular determinants of a high affinity and selectivity ligand-receptor interaction and support the use of (±)-[11C]YJH08 PET to make the first measurements  ...  Methods: (±)-[11C]YJH08 was synthesized by reacting the phenol precursor with [11C]methyl iodide. The biodistribution was studied in vivo with PET/CT and autoradiography.  ...  James and A. Chaney of Stanford University for assistance with digital autoradiography and T. Huynh for technical assistance with small animal PET/CT studies. M. J.  ... 
doi:10.2967/jnumed.120.249755 pmid:32887758 pmcid:PMC8844266 fatcat:we3wj5uxtfae7dzm5rfqeny6fu
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