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Voxel-space ambient occlusion
2010
Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games - I3D 10
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REPORT Voxel-Space Ambient Occlusion 14. ABSTRACT 16. SECURITY CLASSIFICATION OF: Ambient occlusion adds important detail to a scene. ...
This paper presents a multiresolution screen-space voxel based ambient occlusion technique, which improves G-buffer based techniques, avoiding artifacts such as haloing. ...
Reinbothe et al [RBA09] computed ambient occlusion by tracing rays in a voxel grid and filtering the occlusion result in screen space. ...
doi:10.1145/1730804.1730989
dblp:conf/si3d/PenmatsaNW10
fatcat:lfwmmy6awfclnix7h3dhh5ffzu
Pre-integrated deferred subsurface scattering
2014
ACM SIGGRAPH 2014 Posters on - SIGGRAPH '14
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Screen-space ambient occlusion must address a similar problem, so any blur methods used there may be applied here. ...
Figure 6 : 6 Comparison between a) curvature-based ambient occlusion (CDAO) using our WLSD algorithm for curvature, and b) NVIDIA's implementation of horizon-based ambient occlusion (HBAO). ...
doi:10.1145/2614217.2614248
dblp:conf/siggraph/ChenLP14
fatcat:gn3ns4444ngrpcrxlzm6rjip4e
Real-time Surface Analysis and Tagged Material Cleansing for Virtual Colonoscopy
[article]
2010
International Workshop on Volume Graphics, Proceedings of the
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We show how to convert a standard mono-resolution representation into a out-of-core multiresolution structure, both for labeled and continuous scalar volumes. ...
This representation has little overhead over storing precomputed gradients, and has the advantage that feature planes provide minimal geometric information about the underlying volume regions that can ...
Center: Ambient occlusion generated from depth map in screen space. Right: Screen space ambient occlusion applied to final compositing. ...
doi:10.2312/vg/vg10/029-036
fatcat:kjchpz6ehneahjpd4ogvnu4pmu
GPU curvature estimation on deformable meshes
2011
Symposium on Interactive 3D Graphics and Games on - I3D '11
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We demonstrate our algorithm with curvature-based NPR feature lines and a curvature-based approximation for ambient occlusion. ...
The middle is using surface curvature to approximate ambient occlusion. ...
Approximating Ambient Occlusion One application of estimated curvature is to approximate ambient occlusion. ...
doi:10.1145/1944745.1944772
dblp:conf/si3d/GriffinWBO11
fatcat:4qwxlxuucfbsdhzclf7weu3w4q
Real-time rendering of subsurface scattering according to translucency magnitude
2015
ACM SIGGRAPH 2015 Posters on - SIGGRAPH '15
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Yasuhiro Mukaigawa NAIST (a) Lambert (b) Curvature-based (c) Our method (d)Trans. Magnitude Figure 1: Examples of the bunny made of blue jewel Figure 2: Light transport ...
, and the ambient occlusion at the location s on the surface, respectively. ...
The screen space subsurface scattering (SSSS) is developed by Jimenez et al. [2009] , yet the speed of rendering is not very practical for low-end computational environment, because screen space techniques ...
doi:10.1145/2787626.2792616
dblp:conf/siggraph/KuboTM15
fatcat:mifmzzc67fcife6jakwxweivcu
Screen-Space Ambient Occlusion Using Summed-Area Table
サムドエリアテーブルを用いたスクリーン空間環境遮蔽手法
2012
The Journal of the Institute of Image Electronics Engineers of Japan
サムドエリアテーブルを用いたスクリーン空間環境遮蔽手法
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Recently, screen-space ambient occlusion techniques started to flourish, and are now the de facto standard for real-time dynamic shadow synthesis. ...
The contributions of this work are two-folded: a variation of screen-space ambient occlusion that uses Summed-Area Tables, yielding satisfactory results yet performing better than previous attempts, and ...
この計算時間の向上は SAT の GPU への親和性によるも のである．すなわち，ストリーム処理とコヒーレントなメモ リアクセスにより，単位時間当たりのテクスチャキャッシュ Comparative results with ambient occlusion and shading 表 1 SSAO による計算速度の比較結果．
7 7 の作成に recursive doubling 手法を 使用 ...
doi:10.11371/iieej.41.332
fatcat:vumhivaa2bgvli6etkinil3cqq
Interactive Generation of (Paleontological) Scientific Illustrations from 3D-models
[article]
2012
Spanish Computer Graphics Conference
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The user can choose the techniques used to render each layer and manipulate its key aspects. Using 3D- and 2D-painting the artist can still interact with the result and adjust it to his or her liking. ...
Scientific illustrations play an important role in the paleontological domain and are complex illustrations that are manually drawn. ...
Krister Smith and Juliane Eberhardt from Senckenberg Research Institute and Natural History Museum Frankfurt for their expert opinions, support and provided materials. ...
doi:10.2312/localchapterevents/ceig/ceig12/109-112
dblp:conf/ceig/SchaferKK12
fatcat:ekbnhlm7erdxzmydjto2mkusye
Ambient Occlusion Effects for Combined Volumes and Tubular Geometry
2013
IEEE Transactions on Visualization and Computer Graphics
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This paper details a method for interactive direct volume rendering that computes ambient occlusion effects for visualizations that combine both volumetric and geometric primitives, specifically tube-shaped ...
occlusion between structures represented by a volume or geometry. ...
[20] combine image space and object space techniques to compute ambient occlusion effects that also consider geometry not rasterized using other screen space ambient occlusion methods. ...
doi:10.1109/tvcg.2012.306
pmid:23559506
pmcid:PMC3987773
fatcat:wijmdjhjzfdxbhdveigom7ffii
Efficient methods for ambient lighting
2009
Proceedings of the 2009 Spring Conference on Computer Graphics - SCCG '09
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Our model is physically based and thus can not only provide better results than empirical ambient occlusion techniques at the same cost, but also reveals where tradeoffs can be found between accuracy and ...
This paper presents a model and algorithms for the reflection of the ambient light. ...
Acknowledgement This work has been supported by the National Office for Research and Technology and by OTKA K-719922 (Hungary). ...
doi:10.1145/1980462.1980482
dblp:conf/sccg/UmenhofferTS09
fatcat:zkuudbttdvc7fj3nbin3f3jvce
Splatting indirect illumination
2006
Proceedings of the 2006 symposium on Interactive 3D graphics and games - SI3D '06
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We describe an implementation on contemporary graphics hardware, show a comparison to previous approaches, and present adaptation to and results in game-typical applications. ...
In this paper we present a novel method for plausible real-time rendering of indirect illumination effects for diffuse and non-diffuse surfaces. ...
the ambient occlusion term. ...
doi:10.1145/1111411.1111428
dblp:conf/si3d/DachsbacherS06
fatcat:hiqaho7dmjgbndxyhefwusewmq
The Occlusion Spectrum for Volume Classification and Visualization
2009
IEEE Transactions on Visualization and Computer Graphics
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In this paper, we present a new method for classifying volume data based on the ambient occlusion of voxels. ...
In general, the ambient occlusion of a voxel can be interpreted as a weighted average of the intensities in a spherical neighborhood around the voxel. ...
National Science Foundation through grants CCF-0911422, OCI-0325934, OCI-0749227, and OCI-0850566, and the U.S. Department of Energy through the SciDAC program with Agreement No. DE-FC02-06ER25777. ...
doi:10.1109/tvcg.2009.189
pmid:19834222
fatcat:4bxzgt4vlnaaxglizfpj2yrdbu
Deep Medial Fields
[article]
2021
arXiv
pre-print
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an efficient approximation of ambient occlusion that remains stable with respect to viewpoint variations. ...
In particular, the medial field encodes the local thickness of a 3D shape, and enables O(1) projection of a query point onto the medial axis. ...
This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant, NSERC Collaborative Research and Development Grant, Google, Compute Canada, and Advanced ...
arXiv:2106.03804v1
fatcat:fgchknabinhztnmb6t2qmkqnxm
Deferred Hybrid Path Tracing
[chapter]
2019
Ray Tracing Gems
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We reduce the number of traced rays by trying to find an intersection in screen space and reuse information from previous frames via reprojection and filtering. ...
Our techniques require no manual preprocessing and only a few seconds of precomputation. ...
ACKNOWLEDGMENTS We thank Tomasz Stachowiak and the editors for their valuable input, corrections, and suggestions that greatly improved this chapter. ...
doi:10.1007/978-1-4842-4427-2_26
fatcat:zrrzwx2gjrh2dmrgamixzr46bi
View-dependent displacement mapping
2003
ACM Transactions on Graphics
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Abstract Significant visual effects arise from surface mesostructure, such as fine-scale shadowing, occlusion and silhouettes. ...
Unlike traditional displacement mapping, VDM allows for efficient rendering of selfshadows, occlusions and silhouettes without increasing the complexity of the underlying surface mesh. ...
effect using an ambient illumination term. ...
doi:10.1145/882262.882272
fatcat:2ccvmke32zbdxcesqpb23v57j4
High-quality spatio-temporal rendering using semi-analytical visibility
2011
ACM Transactions on Graphics
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Our work focuses on spatio-temporal visibility, and for 49 samples it takes 3.8 seconds to compute visibility and simple shading (ambient occlusion not included) at 1024 × 768 pixels. ...
We also demonstrate that our algorithm, with some adjustments, can be used to accurately compute motion blurred ambient occlusion. ...
grant from the Knut and Alice Wallenberg Foundation. ...
doi:10.1145/2010324.1964949
fatcat:5q35znu3rffmhiwvmfhnmxr64i
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