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Gradient-domain path tracing
2015
ACM Transactions on Graphics
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Figure 1 : Comparing gradient-domain path tracing (G-PT, L1 reconstruction) to path tracing at equal rendering time (2 hours). ...
Finally, we describe Gradient-Domain Path Tracing (G-PT), a relatively simple modification of the standard path tracing algorithm that can yield far superior results. ...
Comparing the characteristics of the error between gradient-domain MLT, gradient-domain path tracing, and regular path tracing. ...
doi:10.1145/2766997
fatcat:cmgc4iad7zbmbaq22mx6fm4fha
Temporal gradient-domain path tracing
2016
ACM Transactions on Graphics
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Path Tracing Gradient-Domain PT Ours 3D Poisson solution Figure 1 : a) In addition to standard path sampling, our method also estimates spatial, temporal and mixed finite differences for the frames of ...
We demonstrate that our approach effectively reduces temporal flickering in animation sequences, significantly improving the visual quality compared to both path tracing and gradient-domain rendering of ...
Manzi et al. [2015] extend gradient-domain path tracing to bidirectional path tracing, combining the advantages of gradient and bidirectional sampling. ...
doi:10.1145/2980179.2980256
fatcat:kiv3fmwwhffl5au6xxe5caiam4
Gradient-Domain Bidirectional Path Tracing
[article]
2015
Symposium on Rendering
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Gradient-domain path tracing has recently been introduced as an efficient realistic image synthesis algorithm. ...
It also improves over unidirectional gradient-domain path tracing in challenging visibility conditions, similarly to how conventional bidirectional path tracing improves over its unidirectional counterpart ...
bidirectional path tracing (G-BDPT), path tracing (PT), and gradient-domain path tracing (G-PT) at equal render time. ...
doi:10.2312/sre.20151168
fatcat:4j6lexfijbfpjotgzjn3iprgbq
Gradient-domain volumetric photon density estimation
2018
ACM Transactions on Graphics
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We show that naïve extensions of gradient domain path-space and density estimation methods to volumetric media, while functional, can result in inefficient estimators. ...
We introduce the first gradient-domain formulation of image synthesis with homogeneous participating media, including four novel and efficient gradient-domain volumetric density estimation algorithms. ...
We additionally implement novel extensions of gradient-domain path tracing (G-PT) ] and gradient-domain bidirectional path tracing (G-BDPT) ] to volumetric light transport. ...
doi:10.1145/3197517.3201363
fatcat:m2o7kyfyizfardstklbqbjs7zy
Gradient-Domain Vertex Connection and Merging
[article]
2017
Eurographics Symposium on Rendering
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path tracing. ...
Our method enables robust gradient sampling in the presence of complex transport, such as specular-diffuse-specular paths, while retaining the denoising power and fast convergence of gradient-domain bidirectional ...
Later, gradient-domain path tracing [KMA * 15] extended standard path tracing to the gradient domain through sampling correlated offset paths from the base paths. ...
doi:10.2312/sre.20171197
dblp:conf/rt/Sun0CNR17
fatcat:3w24mbnc2fhkpkapxxwtpjopn4
A comparative study of Dirichlet and Neumann conditions for path planning through harmonic functions
2004
Future generations computer systems
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the domain boundary. ...
Harmonic functions, by virtue of their extrema appearing only on the domain boundary, are known to have an advantage as a global potential function in the potential field based approach for robot path ...
In the present work, the actual path is not drawn, but the possibility and efficiency of tracing the path is investigated from the nature of the harmonic function in the domain. ...
doi:10.1016/j.future.2003.07.008
fatcat:l4vznkht2fao3bjxjhxjywqyfq
A comparative study of Dirichlet and Neumann conditions for path planning through harmonic functions
2003
Future generations computer systems
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the domain boundary. ...
Harmonic functions, by virtue of their extrema appearing only on the domain boundary, are known to have an advantage as a global potential function in the potential field based approach for robot path ...
In the present work, the actual path is not drawn, but the possibility and efficiency of tracing the path is investigated from the nature of the harmonic function in the domain. ...
doi:10.1016/s0167-739x(03)00185-7
fatcat:jyfrh4fbfjdstipmxheojrycdq
A Comparative Study of Dirichlet and Neumann Conditions for Path Planning through Harmonic Functions
[chapter]
2002
Lecture Notes in Computer Science
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the domain boundary. ...
Harmonic functions, by virtue of their extrema appearing only on the domain boundary, are known to have an advantage as a global potential function in the potential field based approach for robot path ...
In the present work, the actual path is not drawn, but the possibility and efficiency of tracing the path is investigated from the nature of the harmonic function in the domain. ...
doi:10.1007/3-540-46080-2_46
fatcat:k4iilj6rlnhqbiqf3epqgr5dy4
[Paper] Pencil Tracing Mirage
2013
ITE Transactions on Media Technology and Applications
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We focus on pencil tracing technique that is an extension of the conventional ray tracing technique based on the paraxial approximation theory. ...
Ray tracing is the most well-known technique to synthesize a realistic image. ...
Conclusion We propose a simple method that extends pencil tracing technique for simulating mirages. ...
doi:10.3169/mta.1.307
fatcat:6w72kkcz5bg7znueshodvumzmm
Path differentials and applications
[chapter]
2001
Eurographics
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Additionally the path gradient is introduced; it gives the rate of change of the path contribution. When this change is too steep the size of the footprint is reduced. ...
Knowledge about the neighborhood of the path, such as an estimated footprint, can be used to reduce these artefacts without having to trace additional paths. ...
The domain of all possible paths with M degrees of freedom (g X M ) is the Mdimensional unit hypercube. A point in the domain determines a path. ...
doi:10.1007/978-3-7091-6242-2_24
fatcat:4eqgmmpis5azhdlnayaxklp6ga
Path differentials and applications
[article]
2001
Symposium on Rendering
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Additionally the path gradient is introduced; it gives the rate of change of the path contribution. When this change is too steep the size of the footprint is reduced. ...
Knowledge about the neighborhood of the path, such as an estimated footprint, can be used to reduce these artefacts without having to trace additional paths. ...
The domain of all possible paths with M degrees of freedom (g X M )is the Mdimensional unit hypercube. A point in the domain determines a path. ...
doi:10.2312/egwr/egwr01/257-268
fatcat:2kxgw3flovhsfo55tzif7z53du
Deep convolutional reconstruction for gradient-domain rendering
2019
ACM Transactions on Graphics
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Our results significantly improve the quality obtained from gradientdomain path tracing, allowing it to overtake state-of-the-art comparison techniques that denoise traditional Monte Carlo samplings. ...
The reasons can be traced to the frequency content of the light transport integrand and its interplay with the gradient operator. ...
adapt Path Tracing to Gradient-Domain Rendering. ...
doi:10.1145/3306346.3323038
fatcat:5d3alsh4hneqzgoiasg6myyldi
On Divergence-based Distance Functions for Multiply-connected Domains
[article]
2018
arXiv
pre-print
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Thus D can be used to trace a gradient-descent path within Ω from x to y by following ∇_x D(x,y), which has significant computational advantages over tracing the gradient of G. ...
This result can be used for robotic path-planning in complex geometric environments. ...
This implies that the divergence distance function may be used to trace paths between pairs of points in the domain by gradient descent. ...
arXiv:1801.07099v1
fatcat:mezi2zkynfhmlkmeivqshcg27e
A hybrid computational model to predict chemotactic guidance of growth cones
2015
Scientific Reports
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An increased level of [Ca 2+ ] i was found to be spread across the growth cone domain as well as clustered in micro-domains. ...
The overall strategy used by growing axons to find their correct paths during the nervous system development is not yet completely understood. ...
The displacement of the barycentre of the GC area was considered to trace paths.
Quantitative comparison between in silico and biological paths. ...
doi:10.1038/srep11340
pmid:26086936
pmcid:PMC4471899
fatcat:uuiyurlvo5brbdaz7z23aznblm
Adaptive Multi-view Path Tracing
2019
Eurographics Symposium on Rendering
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This set of hit points and bouncing directions is then used within a regular path tracing solution. ...
Rendering photo-realistic image sequences using path tracing and Monte Carlo integration often requires sampling a large number of paths to get converged results. ...
Our method is not incompatible with gradient domain methods and merely allows to get more paths using reprojections, and gradient domain solutions could benefit from our approach. ...
doi:10.2312/sr.20191217
dblp:conf/rt/FraboniINB19
fatcat:5ljmnuaynjg7rnz3rhdtyvd4iu
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