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Charted metropolis light transport

Jacopo Pantaleoni
2017 ACM Transactions on Graphics  
We further apply the novel algorithms to light transport simulation, obtaining a new type of algorithm called charted Metropolis light transport, that can be seen as a bridge between primary sample space  ...  In this manuscript, inspired by a simpler reformulation of primary sample space Metropolis light transport, we derive a novel family of general Markov chain Monte Carlo algorithms called charted Metropolis-Hastings  ...  We applied the new scheme to propose a new type of light transport simulation algorithms that bridge primary sample space and path space MLT.  ... 
doi:10.1145/3072959.3073677 fatcat:pcege6ptcvcejoo35lohh64p7a

Multiplexed metropolis light transport

Toshiya Hachisuka, Anton S. Kaplanyan, Carsten Dachsbacher
2014 ACM Transactions on Graphics  
In light transport simulation, however, there is more information that can be used to improve the efficiency of path sampling.  ...  We introduce a novel MCMC sampling framework, primary space serial tempering, which fuses the ideas of MCMC sampling and MIS for the first time.  ...  This framework leads to a new MCMC light transport simulation method, Multiplexed Metropolis Light Transport (MMLT), which explores the sampling space and adaptively changes the path sampling technique  ... 
doi:10.1145/2601097.2601138 fatcat:d6v6tk7rfvc4tozw22hdsmf4v4

Replica Exchange Light Transport

Shinya Kitaoka, Yoshifumi Kitamura, Fumio Kishino
2009 Computer graphics forum (Print)  
We compare the images generated with our algorithm to those generated with bidirectional path tracing and Metropolis light transport based on the primary sample space.  ...  The replicaexchange light transport algorithm generates a sequence of path samples from each distribution and samples the simultaneous distribution of those distributions as a stationary distribution by  ...  Light Transport Problem In this section, we present a short overview of the light transport problem and introduce the light transport integral on primary sample space.  ... 
doi:10.1111/j.1467-8659.2009.01540.x fatcat:bbbvyzdkwjce7g24ckqh5xbvha

A Spatial Target Function for Metropolis Photon Tracing

Adrien Gruson, Mickaël Ribardière, Martin Šik, Jiří Vorba, Rémi Cozot, Kadi Bouatouch, Jaroslav Křivánek
2016 ACM Transactions on Graphics  
The human visual system is sensitive to relative differences in luminance, but light transport simulation algorithms based on Metropolis sampling often result in a highly nonuniform relative error distribution  ...  Although this issue has previously been addressed in the context of the Metropolis light transport algorithm, our work focuses on Metropolis photon tracing.  ...  The Tea time scene (Fig. 11) is courtesy of Xev.  ... 
doi:10.1145/3072959.2963097 fatcat:jnqawc4s7neotp353h2kn3kske

A Spatial Target Function for Metropolis Photon Tracing

Adrien Gruson, Mickaël Ribardière, Martin Šik, Jiří Vorba, Rémi Cozot, Kadi Bouatouch, Jaroslav Křivánek
2016 ACM Transactions on Graphics  
The human visual system is sensitive to relative differences in luminance, but light transport simulation algorithms based on Metropolis sampling often result in a highly nonuniform relative error distribution  ...  Although this issue has previously been addressed in the context of the Metropolis light transport algorithm, our work focuses on Metropolis photon tracing.  ...  The Tea time scene (Fig. 11) is courtesy of Xev.  ... 
doi:10.1145/2963097 fatcat:tksfqog3mzgp5ir4v3ofgnnws4

A spatial target function for metropolis photon tracing

Adrien Gruson, Mickaël Ribardière, Martin Šik, Jiří Vorba, Rémi Cozot, Kadi Bouatouch, Jaroslav Křivánek
2017 ACM Transactions on Graphics  
The human visual system is sensitive to relative differences in luminance, but light transport simulation algorithms based on Metropolis sampling often result in a highly nonuniform relative error distribution  ...  Although this issue has previously been addressed in the context of the Metropolis light transport algorithm, our work focuses on Metropolis photon tracing.  ...  The Tea time scene (Fig. 11) is courtesy of Xev.  ... 
doi:10.1145/3072959.3126811 fatcat:m2ftexwlqjgj3hhyz57bkdgvg4

The Iray Light Transport Simulation and Rendering System [article]

Alexander Keller, Carsten Wächter, Matthias Raab, Daniel Seibert, Dietger van Antwerpen, Johann Korndörfer, Lutz Kettner
2017 arXiv   pre-print
and thus makes accurate light transport simulation widely available.  ...  Following a purely physically-based paradigm while still allowing for artistic workflows, the Iray light transport simulation and rendering system allows for rendering complex scenes by the push of a button  ...  The Iray Light Transport Simulation and Rendering System The Iray Light Transport Simulation and Rendering System  ... 
arXiv:1705.01263v1 fatcat:k24xnut5izahpkwgq3o3wlhroe

Primary Sample Space Path Guiding

Jerry Jinfeng Guo, Pablo Bauszat, Jacco Bikker, Elmar Eisemann
2018 Eurographics Symposium on Rendering  
Guiding path tracing in light transport simulation has been one of the practical choices for variance reduction in production rendering.  ...  Different from existing methods, we work in primary sample space.  ...  Primary Sample Space Metropolis Light Transport (PSSMLT) offers a simplified version of MLT, where mutations are done by changing random numbers in PSS instead of transforming vertices in the original  ... 
doi:10.2312/sre.20181174 dblp:conf/rt/GuoBBE18 fatcat:655bcbtirnc7bogwjclifziefi

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  
A significant part of the tutorial is devoted to the application of Markov chain Monte Carlo methods for light transport simulation, such as Metropolis Light Transport and its variants.  ...  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  ...  and merging"), as well as advances on Markov Chain Monte Carlo methods (Metropolis Light Transport). • The common to most of these techniques is the view of light transport as an integral over a space  ... 
doi:10.2312/egt.20141023 fatcat:uh2lww2gxzckppa3cynx2udigi

Portal-Based Path Perturbation for Metropolis Light Transport

Hisanari Otsu, Johannes Hanika, Carsten Dachsbacher
2020 International Symposium on Vision, Modeling, and Visualization  
Light transport simulation in scenes with difficult visibility still remains a challenging problem. Markov chain Monte Carlo (MCMC) rendering is often employed for such configurations.  ...  It generates a sequence of correlated light transport paths by iteratively mutating the current state, a path, to another.  ...  The model in the DRAGON IN BOX scene is courtesy of the Stanford Computer Graphics Laboratory. This work was funded by DFG grant DA 1200/8-1, project 405788923.  ... 
doi:10.2312/vmv.20201184 dblp:conf/vmv/OtsuHD20 fatcat:5fftogmjhzgndj6aggbwppd5hu

Differentiable Visual Computing [article]

Tzu-Mao Li
2019 arXiv   pre-print
Simulating light transport in the presence of multi-bounce glossy effects and motion in 3D rendering is challenging due to the hard-to-sample high-contribution areas.  ...  We present a Markov Chain Monte Carlo rendering algorithm that extends Metropolis Light Transport by automatically and explicitly adapting to the local integrand, thereby increasing sampling efficiency  ...  Metropolis Light Transport In light transport simulation, we need to compute the path integral [213] for each pixel : = ∫︁ Ω ℎ ( ) ( ) ( ), (6.1) where Ω is path space, which contains all the light paths  ... 
arXiv:1904.12228v2 fatcat:mlhfrmp4rzhenbwk4yuljunctm

Manifold exploration

Wenzel Jakob, Steve Marschner
2012 ACM Transactions on Graphics  
Abstract It is a long-standing problem in unbiased Monte Carlo methods for rendering that certain difficult types of light transport paths, particularly those involving viewing and illumination along paths  ...  It is based on the idea that sets of paths contributing to the image naturally form manifolds in path space, which can be explored locally by a simple equationsolving iteration.  ...  Finding these paths efficiently is a key problem of light transport simulations.  ... 
doi:10.1145/2185520.2185554 fatcat:yecmb55k75flja2bekhezxfqdy

Manifold exploration

Wenzel Jakob, Steve Marschner
2012 ACM Transactions on Graphics  
Abstract It is a long-standing problem in unbiased Monte Carlo methods for rendering that certain difficult types of light transport paths, particularly those involving viewing and illumination along paths  ...  It is based on the idea that sets of paths contributing to the image naturally form manifolds in path space, which can be explored locally by a simple equationsolving iteration.  ...  Finding these paths efficiently is a key problem of light transport simulations.  ... 
doi:10.1145/2185520.2335409 fatcat:rpe5gvpspbey7nsjohkawconp4

Global Illumination Animation with Random Radiance Representation [article]

László Szirmay-Kalos, György Antal, Balázs Benedek
2003 Symposium on Rendering  
In addition to main part separation, we apply a novel sampling scheme inspired by the Metropolis method to achieve this goal.  ...  However, with the aid of multiple importance sampling, the merits of the two light transfer methods can be combined resulting in an algorithm that is robust and fast enough for animations.  ...  Simulation of the light transport In order to solve the global illumination problem, the light transport should be simulated.  ... 
doi:10.2312/egwr/egwr03/064-073 fatcat:uphb2gyb7beixp447mniobxebq

Temporally Coherent Adaptive Sampling for Imperfect Shadow Maps

T. Barák, J. Bittner, V. Havran
2013 Computer graphics forum (Print)  
The proposed method is based on Metropolis-Hastings sampling and exhibits better temporal coherence of VPLs, which is particularly important for real-time applications dealing with dynamic scenes.  ...  We propose a new adaptive algorithm for determining virtual point lights (VPL) in the scope of real-time instant radiosity methods, which use a limited number of VPLs.  ...  SGS13/214/OHK3/3T/13, supported by Ministry of Education of the Czech Republic.  ... 
doi:10.1111/cgf.12154 fatcat:epuxvguc25aavnq4kr3j7lmvdq
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