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Adaptive Progressive Vertex Tracing for Interactive Reflections [article]

Thomas Ullmann, Alexander Schmidt, Daniel Beier, Beat Bruderlin
2001 Eurographics State of the Art Reports  
The core of the approach consists of a special type of ray tracing, the so-called vertex tracing.  ...  Real-time performance, even for complex CAD scenes, is achieved by progressive adaptive refinement, (derived from the geometry in object space) as well as by parallelization of the algorithm.  ...  This so-called Vertex Tracing approach was extended for application in a distributed environment.  ... 
doi:10.2312/egs.20011016 fatcat:evjwyomvvnfcfjb3l63vurtjuy

An Adaptive Multiresolution Method for Progressive Model Transmission

Danny To, Rynson W. H. Lau, Mark Green
2001 Presence - Teleoperators and Virtual Environments  
In this paper, we present an ef cient, adaptive, multiresolution method that allows progressive and selective model transmission. It is achieved by reducing the neighboring dependency to a minimum.  ...  We will present how our method works in a client-server environment. We will also show the data structure of the transmission record and some performance results of the method.  ...  Acknowledgments The work described in this paper was partially supported by a CityU grant (Project 7100003).  ... 
doi:10.1162/105474601750182324 fatcat:72ftotujnnc7jbhxccxlf2k5di

A global illumination solution for general reflectance distributions

Françis X. Sillion, James R. Arvo, Stephen H. Westin, Donald P. Greenberg
1991 Computer graphics  
This algorithm removes the previous practical restriction to ideal specular and/or ideal diffuse environments, and supports complex physically based reflectance distributions.  ...  A general light transfer simulation algorithm for environments composed of materials with arbitrary reflectance functions is presented.  ...  A central assumption of the method is that a directional intensity distribution 1(;) can be stored and accessed at each vertex of the environment.  ... 
doi:10.1145/127719.122739 fatcat:o2pwrankgfe4hmpnjvi64mug2m

A global illumination solution for general reflectance distributions

Françis X. Sillion, James R. Arvo, Stephen H. Westin, Donald P. Greenberg
1991 Proceedings of the 18th annual conference on Computer graphics and interactive techniques - SIGGRAPH '91  
This algorithm removes the previous practical restriction to ideal specular and/or ideal diffuse environments, and supports complex physically based reflectance distributions.  ...  A general light transfer simulation algorithm for environments composed of materials with arbitrary reflectance functions is presented.  ...  A central assumption of the method is that a directional intensity distribution 1(;) can be stored and accessed at each vertex of the environment.  ... 
doi:10.1145/122718.122739 dblp:conf/siggraph/SillionAWG91 fatcat:gxi2m36hnbgrboem44k5wgh324

Redundancy + Reconfigurability = Recoverability

Simon Monkman, Igor Schagaev
2013 Electronics  
Use of redundancy for connected computers is analysed in terms of recoverability, where two supportive algorithms of forward and backward tracing are proposed and explained.  ...  An application of redundancy for reconfigurability and recoverability of computer and connected computer systems is discussed, gaining performance, reliability and power-saving in operation.  ...  The Interfacing zone deals with data transfer between zones and getting them in and out from environment.  ... 
doi:10.3390/electronics2030212 fatcat:3pfpo42lvrb25igqw6kdd42wxa

Mixing Monte Carlo and progressive rendering for improved global illumination

Ian C. Doidge, Mark W. Jones, Benjamin Mora
2012 The Visual Computer  
In this paper we seek to eliminate the noise caused by caustic paths during progressive Monte Carlo path tracing.  ...  We employ a filtering strategy over path space, handling each subspace using specialised derivations of path tracing and progressive photon mapping.  ...  Acknowledgements The work presented in this paper was funded by an EPSRC doctoral training grant and also EPSRC grant number EP/I031243/1.  ... 
doi:10.1007/s00371-012-0703-2 fatcat:exrdtnycbbe3dp4ndtnat7wani

A Rendering Equation for Specular Transfers and Its Integration into Global Illumination

Yizhou Yu, Hong Wu
1997 Computer graphics forum (Print)  
An implementation is described based on wavefront tracing and progressive radiosity. Sample images generated by this method are presented.  ...  In this paper, we present a rigorous theoretical formulation of the fundamental problem-indirect illumination from area sources via curved ideal specular surfaces.  ...  The unshot radiosity of a specular surface is distributed in the whole environment. A new variable, called unshot specular rad, can be created on each diffuse patch or vertex.  ... 
doi:10.1111/1467-8659.00165 fatcat:h467vtmx3necnawwgvatqjp7ai

A Rendering Equation for Specular Transfers and Its Integration into Global Illumination

Yizhou Yu, Hong Wu
2008 Computer graphics forum (Print)  
An implementation is described based on wavefront tracing and progressive radiosity. Sample images generated by this method are presented.  ...  In this paper, we present a rigorous theoretical formulation of the fundamental problem-indirect illumination from area sources via curved ideal specular surfaces.  ...  The unshot radiosity of a specular surface is distributed in the whole environment. A new variable, called unshot specular rad, can be created on each diffuse patch or vertex.  ... 
doi:10.1111/1467-8659.16.3conferenceissue.29 fatcat:qog77pew4jblfjv2gxrjudgmhe

An efficient radiosity solution for bump texture generation

Hong Chen, En-Hua Wu
1990 Proceedings of the 17th annual conference on Computer graphics and interactive techniques - SIGGRAPH '90  
environment.  ...  The method is characterized by introduction of a perturbed radiosity map, established in the context of either progressive radiosity or standard radiosity solution.  ...  We are grateful to You-Dong Liang and Qun-Sheng Peng of Zhejiang University for their generous help in providing related theses for references long before their papers appeared at conferences.  ... 
doi:10.1145/97879.97893 dblp:conf/siggraph/ChenW90 fatcat:ztimohznqzfyziyjdshsctkyau

On-line learning of parametric mixture models for light transport simulation

Jiří Vorba, Ondřej Karlík, Martin Šik, Tobias Ritschel, Jaroslav Křivánek
2014 ACM Transactions on Graphics  
bidirectional path tracing (BDPT) guided by our parametric distributions learned on-line in a number of training passes (TP).  ...  We propose to represent the distributions by a parametric mixture model trained in an on-line (i.e. progressive) manner from a potentially infinite stream of particles.  ...  Acknowledgements The work was supported by Charles University in Prague, project GA UK No 580612, by the grant SVV2014260103, and by the Czech Science Foundation grant P202-13-26189S.  ... 
doi:10.1145/2601097.2601203 fatcat:xnmq767abfhvllllwxaseexh34

Island Hopping: Efficient Mobility-Assisted Forwarding in Partitioned Networks

Natasa Sarafijanovic-Djukic, Michal Pidrkowski, Matthias Grossglauser
2006 2006 3rd Annual IEEE Communications Society on Sensor and Ad Hoc Communications and Networks  
We observe that in many practical settings, spatial node distributions are very heterogeneous and possess concentration points of high node density.  ...  Mobile wireless ad hoc and sensor networks can be permanently partitioned in many interesting scenarios. This implies that instantaneous end-to-end routes do not exist.  ...  The key is for node i to decide which vertex v should be the next hop in V for message m in order to make progress towards the destination.  ... 
doi:10.1109/sahcn.2006.288427 dblp:conf/secon/Sarafijanovic-DjukicPG06 fatcat:xytlzn33rrddblg3lhcs4lgiuy

Light transport simulation with vertex connection and merging

Iliyan Georgiev, Jaroslav Křivánek, Tomáš Davidovič, Philipp Slusallek
2012 ACM Transactions on Graphics  
Figure 1 : A comparison of our new progressive vertex connection and merging (VCM) algorithm against bidirectional path tracing (BPT) and stochastic progressive photon mapping (PPM) after 30 minutes of  ...  First, it makes it possible, for the first time, to explain in a formal manner the relative efficiency of photon mapping and bidirectional path tracing, which have so far been considered conceptually incompatible  ...  Stochastic progressive photon mapping [Hachisuka and Jensen 2009 ] enables PPM to render distribution ray tracing effects.  ... 
doi:10.1145/2366145.2366211 fatcat:ajt42t5ft5btjgyznzsesoxdha

Path Integral Methods for Light Transport Simulation: Theory and Practice [article]

Jaroslav Krivanek, Iliyan Georgiev, Anton S. Kaplanyan, Juan Canada
2014 Eurographics State of the Art Reports  
Many of the recent advances in light transport simulation, such as the robust combination of bidirectional path tracing with photon mapping (Vertex Connection and Merging / Unified Path Space), or the  ...  This research effort is propelled by the desire to accurately render general environments with complex materials and light sources, which is often difficult with the currently employed solutions.  ...  In summary, vertex connection and merging tries to combine the best of bidirectional path tracing (BPT) and (progressive) photon mapping.  ... 
doi:10.2312/egt.20141023 fatcat:uh2lww2gxzckppa3cynx2udigi

Virtual Grid System Based on a Minimum Spanning Tree Algorithm

Hamed Saqer Al-Bdour
2013 International Journal of Computer and Electrical Engineering  
environment and forms the tree based on the vertex with maximum degree.  ...  In addition to a comparative analysis of the proposed formation of the GRID system, we propose a new algorithm for constructing spanning tree for the DV GRID that adapts to the dynamics of the changeable  ...  operation in a dynamically changing environment.  ... 
doi:10.7763/ijcee.2013.v5.763 fatcat:bcdbofiitbeqfk4lkcrauluxfq

Interdisciplinary Methodology to Extend Technology Readiness Levels in SONAR Simulation from Laboratory Validation to Hydrography Demonstrator

James Riordan, Francis Flannery, Daniel Toal, Matija Rossi, Gerard Dooly
2019 Journal of Marine Science and Engineering  
Our research approach uses the TRL framework to identify and map current barriers to the use of simulation to interdisciplinary solutions adapted from multiple domains.  ...  While SONAR simulation offers the potential to unlock cost-effective personnel capacity building in hydrography, demonstration of virtualised survey-scale operations is a prerequisite for validation by  ...  The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.  ... 
doi:10.3390/jmse7050159 fatcat:mbehnhm7ina65jiglyftpxbe64
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