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A new adaptive density estimator for particle-tracing radiosity

Wong Kam Wah
Proceedings the Eighth Pacific Conference on Computer Graphics and Applications  
In particle-tracing radiosity algorithms, energy-carrying particles are traced through an environment for simulating global illumination.  ...  Illumination on a surface is reconstructed from particle "hit points" on the surface, which is a density estimation problem [ I l l .  ...  Conclusions A new method is proposed for estimating the illumination of a surface in particle-tracing radiosity applications.  ... 
doi:10.1109/pccga.2000.883882 dblp:conf/pg/Wah00 fatcat:xetxvfatezaabheolbaglb4u54

Global Illumination via Density-Estimation [chapter]

Peter Shirley, Bretton Wade, Philip M. Hubbard, David Zareski, Bruce Walter, Donald P. Greenberg
1995 Eurographics  
Acknowledgments Thanks to Jim Arvo for his many helpful suggestions. Special thanks to Gene Greger who created all of the models depicted in the paper.  ...  This work was supported by the NSF/ARPA Science and Technology Center for Computer Graphics and Scientific Visualization (ASC-8920219) and by NSF CCR-9401961 and performed on workstations generously provided  ...  We use the particle tracing density estimation meshing Fig. 1 . Overview of the density estimation algorithm.  ... 
doi:10.1007/978-3-7091-9430-0_21 fatcat:x557uhwkyrf2lnmvcmp6jh7xom

Fast Global Illumination Including Specular Effects [chapter]

Xavier Granier, George Drettakis, Bruce Walter
2000 Eurographics  
We present a new method which seamlessly integrates particle tracing (for nondiffuse transport) into the gather step of hierarchical radiosity (for diffuse transport) to efficiently handle all types of  ...  This is achieved using a radiosity algorithm producing smooth, noise free simulation of diffuse light transfers, and an integrated particle trace for rapid, high quality specular reflections such as caustics  ...  Poulin for numerous discussions and lots of advice, and to F. Neyret and F. Durand for re-reading the paper.  ... 
doi:10.1007/978-3-7091-6303-0_5 fatcat:az6oqebta5fync32yvcj5bbmoq

Bidirectional Instant Radiosity [article]

Benjamin Segovia, Jean Claude Iehl, Richard Mitanchey, Bernard Péroche
2006 Symposium on Rendering  
Our idea is to build several estimators and to efficiently combine them to find a set of virtual point light sources which are relevant for the areas of the scene seen by the camera.  ...  This paper presents a new sampling strategy to achieve interactive global illumination on one commodity computer.  ...  Acknowledgments We would like to thank the anonymous reviewers for their very valuable comments and pointing out the missing references.  ... 
doi:10.2312/egwr/egsr06/389-397 fatcat:4xgqifwvv5bfxptsb5ii77h3g4

Anisotropic Participating Media at Near Interactive Rates [article]

Juan-Roberto Jimenez, Xavier Pueyo
2003 Eurographics State of the Art Reports  
Each texel represents the outgoing radiance, in a given direction, from a region of the object. The method uses density estimation techniques to compute the textures.  ...  The proposed algorithm is divided in three phases: particle tracing, reconstruction and rendering. The particle tracing phase is based on the Monte Carlo light tracing.  ...  It is used, as a previous step, to efficiently apply the nearest neighbour density estimation technique. The histogram is computed, directly, from the particle set.  ... 
doi:10.2312/egp.20031019 fatcat:o7wkx2qcnveu7flz3tgcbfdqqq

Incremental Updates for Rapid Glossy Global Illumination

Xavier Granier, George Drettakis
2001 Computer graphics forum (Print)  
We build on a unified algorithm which uses hierarchical radiosity with clustering and particle tracing for diffuse and non-diffuse transport respectively.  ...  By combining this incremental particle trace with a line-space hierarchy for incremental update of diffuse illumination, we can locally modify complex scenes rapidly.  ...  Two methods are particularly related to our approach: The Photon Map approach 15 and density estimation 29 which both use particles or photons for light transport.  ... 
doi:10.1111/1467-8659.00519 fatcat:sjkcemanzfgbtojoc3iwbmxzvm

Overview of Parallel Photo-realistic Graphics [article]

E. Reinhard, A.G. Chalmers, F.W. Jansen
1998 Eurographics State of the Art Reports  
This holds for all three rendering techniques considered in this report: ray tracing, radiosity and particle tracing.  ...  For this reason parallel processing must be considered as a viable option to compute images in a reasonable time.  ...  Thanks to Arjan Kok and Jan Eek for allowing us to use the results of their modelling efforts. This work was partly funded by the EC under TMR grant number ERBFMBICT960655.  ... 
doi:10.2312/egst.19981019 fatcat:77euw3u5pndapcywdn4cffjznm

Path differentials and applications [chapter]

Frank Suykens, Yves D. Willems
2001 Eurographics  
Two applications show its potential: texture filtering in distributed ray tracing and a novel hierarchical approach to particle tracing radiosity.  ...  The recently introduced ray differentials estimate such a footprint for classical ray tracing, by computing ray derivatives with respect to the image plane.  ...  Acknowledgments Many thanks to Vincent Masselus for modeling the scenes and to all the people that made useful suggestions. This research was partly supported by FWO Grant #G.0263.97.  ... 
doi:10.1007/978-3-7091-6242-2_24 fatcat:4eqgmmpis5azhdlnayaxklp6ga

Path differentials and applications [article]

Frank Suykens, Yves D. Willems
2001 Symposium on Rendering  
Two applications show its potential: texture filtering in distributed ray tracing and a novel hierarchical approach to particle tracing radiosity.  ...  The recently introduced ray differentials estimate such a footprint for classical ray tracing, by computing ray derivatives with respect to the image plane.  ...  Acknowledgments Many thanks to Vincent Masselus for modeling the scenes and to all the people that made useful suggestions. This research was partly supported by FWO Grant #G.0263.97.  ... 
doi:10.2312/egwr/egwr01/257-268 fatcat:2kxgw3flovhsfo55tzif7z53du

A final reconstruction approach for a unified global illumination algorithm

Xavier Granier, George Drettakis
2004 ACM Transactions on Graphics  
The first step of this algorithm consists in a view-independent solution based on hierarchical radiosity with clustering, integrated with particle tracing.  ...  In this article, we present a final reconstruction step for a novel unified approach to global illumination, that automatically detects different types of light transfer and uses the appropriate method  ...  density for reflecting in direction ω.  ... 
doi:10.1145/990002.990006 fatcat:o6o5tlatqndlnjpsxmyv2pruey

Global Illumination for Interactive Applications and High-Quality Animations [article]

Cyrille Damez, Kirill Dmitriev, Karol Myszkowski
2002 Eurographics State of the Art Reports  
One of the main obstacles to the use of global illumination in image synthesis industry is the considerable amount of time needed to compute the lighting for a single image.  ...  Indeed, with the steady progress of computing resources and graphics hardware, and the current trend of new algorithms for animated scenes, common use of global illumination seems closer than ever.  ...  Thanks also to all those who read early drafts of the paper -Philippe Bekaert, Katja Daubert, Jörg Haber, Vlastimil Havran, Jan Kautz, Annette Scheel, and Philipp Slusallek for their help-  ... 
doi:10.2312/egst.20021050 fatcat:gkihynhv2ra47ltdoa3gqk5se4

Sequential Monte Carlo instant radiosity

Peter Hedman, Tero Karras, Jaakko Lehtinen
2016 Proceedings of the 20th ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games - I3D '16  
Abstract Instant Radiosity and its derivatives are interactive methods for efficiently estimating global (indirect) illumination.  ...  solution for each frame, and does so in a temporally coherent manner.  ...  We then generate a set of candidate VPLs by tracing rays from the directly visible surfaces (line 5) and estimate their intensities by performing density estimation and computing their radiosities (lines  ... 
doi:10.1145/2856400.2856406 dblp:conf/si3d/HedmanKL16 fatcat:h6eiyqktdzduvgpkuq7dsy2vrm

Importance Driven Construction of Photon Maps [chapter]

Ingmar Peter, Georg Pietrek
1998 Eurographics  
Particle tracing allows physically correct simulation of all kinds of light interaction in a scene, but can be a computationally expensive task.  ...  In the first pass particle tracing of importance is performed to create a global data structure, called importance map.  ...  Dutré and Willems present a particle tracing algorithm with adaptive probability functions for light source sampling and surface reflectance sampling [DW94, DW95] .  ... 
doi:10.1007/978-3-7091-6453-2_25 fatcat:jy6wekhwv5cpbfwqffwhdscqvi

High Quality Final Gathering for Hierarchical Monte Carlo Radiosity for General Environments [chapter]

Frederic Pérez, Ignacio Martín, Xavier Pueyo
2002 Advances in Modelling, Animation and Rendering  
In this paper we present the integration of a new gathering procedure in the rendering pass, that uses the approximate results obtained by a particle tracing method, an extension of the Hierarchical Monte  ...  Aiming at rendering high quality images robustly for general environments with simple algorithms, we use a two-pass method that accounts for the global illumination.  ...  Many thanks to Neil Gatenby (LightWork Design Ltd.) for the kitchen model, to Nicolas Holzschuch for his VRML translation, and to Philippe Bekaert for his fig to cgm translator (that was used for this  ... 
doi:10.1007/978-1-4471-0103-1_27 fatcat:sykmwisxtjdubdmlyfcyvz3y5i

Using the visual differences predictor to improve performance of progressive global illumination computation

Valdimir Volevich, Karol Myszkowski, Andrei Khodulev, Edward A. Kopylov
2000 ACM Transactions on Graphics  
The technique is a mixture of stochastic (density estimation) and deterministic (adaptive mesh refinement) algorithms used in a sequence and optimized to reduce the differences between the intermediate  ...  One advantage of the technique is that local estimates of global illumination are readily available at the early stages of computing , making possible the development of a more robust adaptive mesh subdivision  ...  ACKNOWLEDGMENTS We thank the anonymous reviewers of a previous version of this paper for their comments and suggestions.  ... 
doi:10.1145/343593.343611 fatcat:xdwy5kpnqrhy5hz5b4se3z3bie
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