Computer Graphics Forum, Volume 33

Volume 33, Number 1, February 2014

Editorial

• 
  Holly E. Rushmeier, Oliver Deussen:
  Editorial. 1

Articles

• 
  Andrei Sharf, Hui Huang, Cheng Liang, Jiapei Zhang, Baoquan Chen, Minglun Gong:
  Mobility-Trees for Indoor Scenes Manipulation. 2-14
• 
  Chuan Li, Philip J. Willis, Matthew Brown:
  Appearance Stylization of Manhattan World Buildings. 15-26
• 
  Daniel Jönsson, Erik Sundén, Anders Ynnerman, Timo Ropinski:
  A Survey of Volumetric Illumination Techniques for Interactive Volume Rendering. 27-51
• 
  Vesna Stojakovic, Srdan Popov, Bojan Tepavcevic:
  Visualization of the Centre of Projection Geometrical Locus in a Single Image. 52-63
• 
  Denis Kravtsov, Oleg Fryazinov, Valery Adzhiev, Alexander A. Pasko, Peter Comninos:
  Controlled Metamorphosis Between Skeleton-Driven Animated Polyhedral Meshes of Arbitrary Topologies. 64-72
• 
  Jacek Kustra, Andrei C. Jalba, Alexandru Telea:
  Robust Segmentation of Multiple Intersecting Manifolds from Unoriented Noisy Point Clouds. 73-87
• 
  Carsten Dachsbacher, Jaroslav Krivánek, Milos Hasan, Adam Arbree, Bruce Walter, Jan Novák:
  Scalable Realistic Rendering with Many-Light Methods. 88-104
• 
  Derek Nowrouzezahrai, Ilya Baran, Kenny Mitchell, Wojciech Jarosz:
  Visibility Silhouettes for Semi-Analytic Spherical Integration. 105-117
• 
  Jirí Kosinka, Malcolm A. Sabin, Neil A. Dodgson:
  Subdivision Surfaces with Creases and Truncated Multiple Knot Lines. 118-128
• 
  Attila T. Áfra, László Szirmay-Kalos:
  Stackless Multi-BVH Traversal for CPU, MIC and GPU Ray Tracing. 129-140
• 
  Erwin de Groot, Brian Wyvill, Loïc Barthe, Ahmad H. Nasri, Paul Lalonde:
  Implicit Decals: Interactive Editing of Repetitive Patterns on Surfaces. 141-151
• 
  Karl Apaza-Agüero, Luciano Silva, Olga Regina Pereira Bellon:
  Projection Mapping on Arbitrary Cubic Cell Complexes. 152-163
• 
  Ayan Sinha, Karthik Ramani:
  Multi-Scale Kernels Using Random Walks. 164-177
• 
  Renan Machado e Silva, Claudio Esperança, Ricardo Marroquim, Antonio A. F. Oliveira:
  Image Space Rendering of Point Clouds Using the HPR Operator. 178-189
• 
  Keizo Sakurai, Kazunori Miyata:
  Modelling of Non-Periodic Aggregates Having a Pile Structure. 190-198
• 
  Thomas Engelhardt, Thorsten-Walther Schmidt, Jan Kautz, Carsten Dachsbacher:
  Low-Cost Subpixel Rendering for Diverse Displays. 199-209
• 
  Oleg Mishchenko, Roger Crawfis:
  On Perception of Semi-Transparent Streamlines for Three-Dimensional Flow Visualization. 210-221
• 
  Alexander Kuhn, Wito Engelke, Christian Rössl, Markus Hadwiger, Holger Theisel:
  Time Line Cell Tracking for the Approximation of Lagrangian Coherent Structures with Subgrid Accuracy. 222-234
• 
  Ari Silvennoinen, Hannu Saransaari, Samuli Laine, Jaakko Lehtinen:
  Occluder Simplification Using Planar Sections. 235-245
• 
  Jan Bender, Kenny Erleben, Jeff Trinkle:
  Interactive Simulation of Rigid Body Dynamics in Computer Graphics. 246-270
• 
  Manuel Finckh, Holger Dammertz, Hendrik P. A. Lensch:
  On Near Optimal Lattice Quantization of Multi-Dimensional Data Points. 271-281
• 
  L. Zhang, Qi Deng, Raghu Machiraju, Anand Rangarajan, David S. Thompson, D. Keith Walters, Han-Wei Shen:
  Boosting Techniques for Physics-Based Vortex Detection. 282-293
• 
  Andrew T. Duchowski:
  τε'χνη Photons: Evolution of a Course in Data Structures. 294-304

Report

• 
  Marco Ament, Filip Sadlo, Daniel Weiskopf:
  2014 Cover Image: Supernova. 305-306

Volume 33, Number 2, May 2014

Geometry Acquisition, Reconstruction and Analysis

• 
  Claudia Kuster, Jean-Charles Bazin, A. Cengiz Öztireli, Teng Deng, Tobias Martin, Tiberiu Popa, Markus H. Gross:
  Spatio-temporal geometry fusion for multiple hybrid cameras using moving least squares surfaces. 1-10
• 
  Oliver Mattausch, Daniele Panozzo, Claudio Mura, Olga Sorkine-Hornung, Renato Pajarola:
  Object detection and classification from large-scale cluttered indoor scans. 11-21
• 
  Michael Barton, Helmut Pottmann, Johannes Wallner:
  Detection and reconstruction of freeform sweeps. 23-32

Images I

• 
  David C. Schedl, Clemens Birklbauer, Oliver Bimber:
  Coded exposure HDR light-field video recording. 33-42
• 
  Clemens Birklbauer, Oliver Bimber:
  Panorama light-field imaging. 43-52
• 
  Lukasz Dabala, Petr Kellnhofer, Tobias Ritschel, Piotr Didyk, Krzysztof Templin, Karol Myszkowski, Przemyslaw Rokita, Hans-Peter Seidel:
  Manipulating refractive and reflective binocular disparity. 53-62
• 
  Alexandre Chapiro, Simon Heinzle, Tunç Ozan Aydin, Steven Poulakos, Matthias Zwicker, Aljoscha Smolic, Markus H. Gross:
  Optimizing stereo-to-multiview conversion for autostereoscopic displays. 63-72

Procedural Modeling I

• 
  Markus Steinberger, Michael Kenzel, Bernhard Kainz, Jörg Müller, Peter Wonka, Dieter Schmalstieg:
  Parallel generation of architecture on the GPU. 73-82
• 
  Minh Dang, Duygu Ceylan, Boris Neubert, Mark Pauly:
  SAFE: Structure-aware facade editing. 83-93
• 
  Chongyang Ma, Nicholas Vining, Sylvain Lefebvre, Alla Sheffer:
  Game level layout from design specification. 95-104
• 
  Markus Steinberger, Michael Kenzel, Bernhard Kainz, Peter Wonka, Dieter Schmalstieg:
  On-the-fly generation and rendering of infinite cities on the GPU. 105-114

Shape Collections, Features

• 
  Youyi Zheng, Daniel Cohen-Or, Melinos Averkiou, Niloy J. Mitra:
  Recurring part arrangements in shape collections. 115-124
• 
  Melinos Averkiou, Vladimir G. Kim, Youyi Zheng, Niloy J. Mitra:
  ShapeSynth: Parameterizing model collections for coupled shape exploration and synthesis. 125-134
• 
  Jozef Dobos, Niloy J. Mitra, Anthony Steed:
  3D Timeline: Reverse engineering of a part-based provenance from consecutive 3D models. 135-144

Surfaces I

• 
  Libor Vása, Stefano Marras, Kai Hormann, Guido Brunnett:
  Compressing dynamic meshes with geometric laplacians. 145-154
• 
  Julie Digne, Raphaëlle Chaine, Sébastien Valette:
  Self-similarity for accurate compression of point sampled surfaces. 155-164
• 
  Emilie Guy, Jean-Marc Thiery, Tamy Boubekeur:
  SimSelect: Similarity-based selection for 3D surfaces. 165-173
• 
  Chongyang Ma, Haibin Huang, Alla Sheffer, Evangelos Kalogerakis, Rui Wang:
  Analogy-driven 3D style transfer. 175-184

Images II

• 
  Vlad Hosu, Mai Lan Ha, Terence Sim:
  Light montage for perceptual image enhancement. 185-194
• 
  Dawid Pajak, Robert Herzog, Radoslaw Mantiuk, Piotr Didyk, Elmar Eisemann, Karol Myszkowski, Kari Pulli:
  Perceptual depth compression for stereo applications. 195-204
• 
  Sou-Young Jin, Ho-Jin Choi, Yu-Wing Tai:
  A randomized algorithm for natural object colorization. 205-214
• 
  Davide Eynard, Artiom Kovnatsky, Michael M. Bronstein:
  Laplacian colormaps: a framework for structure-preserving color transformations. 215-224

Animation I (Physically-based)

• 
  Mazen Al Borno, Eugene Fiume, Aaron Hertzmann, Martin de Lasa:
  Feedback control for rotational movements in feature space. 225-233
• 
  Robin Tomcin, Dominik Sibbing, Leif Kobbelt:
  Efficient enforcement of hard articulation constraints in the presence of closed loops and contacts. 235-244
• 
  Daseong Han, Junyong Noh, Xiaogang Jin, Joseph S. Shin, Sung Yong Shin:
  On-line real-time physics-based predictive motion control with balance recovery. 245-254
• 
  Jens Cornelis, Markus Ihmsen, Andreas Peer, Matthias Teschner:
  IISPH-FLIP for incompressible fluids. 255-262

Surfaces II

• 
  Frédéric Claux, Loïc Barthe, David Vanderhaeghe, Jean-Pierre Jessel, Mathias Paulin:
  Crack-free rendering of dynamically tesselated B-rep models. 263-272

Animation II (Motion Data Processing)

• 
  Helge Rhodin, James Tompkin, Kwang In Kim, Kiran Varanasi, Hans-Peter Seidel, Christian Theobalt:
  Interactive motion mapping for real-time character control. 273-282
• 
  Libor Vása, Guido Brunnett:
  Rate-distortion optimized compression of motion capture data. 283-292
• 
  Andreas Vasilakis, Ioannis Fudos:
  Pose partitioning for multi-resolution segmentation of arbitrary mesh animations. 293-302
• 
  David Wolinski, Stephen J. Guy, Anne-Hélène Olivier, Ming C. Lin, Dinesh Manocha, Julien Pettré:
  Parameter estimation and comparative evaluation of crowd simulations. 303-312

Rendering

• 
  Boris Raymond, Gaël Guennebaud, Pascal Barla, Romain Pacanowski, Xavier Granier:
  Optimizing BRDF orientations for the manipulation of anisotropic highlights. 313-321
• 
  Johannes Hanika, Carsten Dachsbacher:
  Efficient Monte Carlo rendering with realistic lenses. 323-332
• 
  Kei Iwasaki, K. Mizutani, Yoshinori Dobashi, Tomoyuki Nishita:
  Interactive cloth rendering of microcylinder appearance model under environment lighting. 333-340
• 
  Magnus Andersson, Jon Hasselgren, Robert Toth, Tomas Akenine-Möller:
  Adaptive texture space shading for stochastic rendering. 341-350

Procedural Modeling II

• 
  Kevin Jordao, Julien Pettré, Marc Christie, Marie-Paule Cani:
  Crowd sculpting: A space-time sculpting method for populating virtual environments. 351-360
• 
  Stefan Lienhard, Matthias Specht, Boris Neubert, Mark Pauly, Pascal Müller:
  Thumbnail galleries for procedural models. 361-370

Images III

• 
  Dan Casas, Marco Volino, John P. Collomosse, Adrian Hilton:
  4D video textures for interactive character appearance. 371-380
• 
  E. Shahrian, Brian L. Price, Scott Cohen, D. Rajan:
  Temporally coherent and spatially accurate video matting. 381-390
• 
  Minjung Son, Yunjin Lee, Henry Kang, Seungyong Lee:
  Art-photographic detail enhancement. 391-400
• 
  Kazim Pal, Christian Schüller, Daniele Panozzo, Olga Sorkine-Hornung, Tim Weyrich:
  Content-aware surface parameterization for interactive restoration of historical documents. 401-409

Animation III

• 
  Ignacio Garcia-Dorado, Daniel G. Aliaga, Satish V. Ukkusuri:
  Designing large-scale interactive traffic animations for urban modeling. 411-420
• 
  Marco Tarini, Daniele Panozzo, Olga Sorkine-Hornung:
  Accurate and efficient lighting for skinned models. 421-428
• 
  Shuo Jin, Yunbo Zhang, Charlie C. L. Wang:
  Deformation with enforced metrics on length, area and volume. 429-438

Men and Nature

• 
  Feilong Yan, Minglun Gong, Daniel Cohen-Or, Oliver Deussen, Baoquan Chen:
  Flower reconstruction from a single photo. 439-447
• 
  Michael Birsak, Przemyslaw Musialski, Peter Wonka, Michael Wimmer:
  Automatic generation of tourist brochures. 449-458
• 
  Marco Di Benedetto, Fabio Ganovelli, Marcos Balsa Rodríguez, Alberto Jaspe Villanueva, Roberto Scopigno, Enrico Gobbetti:
  ExploreMaps: Efficient construction and ubiquitous exploration of panoramic view graphs of complex 3D environments. 459-468

Cutting and Printing

• 
  Jean Hergel, Sylvain Lefebvre:
  Clean color: Improving multi-filament 3D prints. 469-478
• 
  Tim Reiner, Nathan A. Carr, Radomír Mech, Ondrej Stava, Carsten Dachsbacher, Gavin S. P. Miller:
  Dual-color mixing for fused deposition modeling printers. 479-486
• 
  Conrado R. Ruiz Jr., Sang N. Le, Jinze Yu, Kok-Lim Low:
  Multi-style paper pop-up designs from 3D models. 487-496

Visualization

• 
  Marcel Hlawatsch, Filip Sadlo, H. Jang, Daniel Weiskopf:
  Pathline glyphs. 497-506
• 
  Tobias Günther, Christian Rössl, Holger Theisel:
  Hierarchical opacity optimization for sets of 3D line fields. 507-516

Volume 33, Number 3, June 2014

Flow Visualization

• 
  Maik Schulze, Janick Martinez Esturo, Tobias Günther, Christian Rössl, Hans-Peter Seidel, Tino Weinkauf, Holger Theisel:
  Sets of Globally Optimal Stream Surfaces for Flow Visualization. 1-10
• 
  Tobias Günther, Maik Schulze, Janick Martinez Esturo, Christian Rössl, Holger Theisel:
  Opacity Optimization for Surfaces. 11-20
• 
  Harsh Bhatia, Valerio Pascucci, Robert M. Kirby, Peer-Timo Bremer:
  Extracting Features from Time-Dependent Vector Fields Using Internal Reference Frames. 21-30

Topology

• 
  David Günther, Joseph Salmon, Julien Tierny:
  Mandatory Critical Points of 2D Uncertain Scalar Fields. 31-40
• 
  Himangshu Saikia, Hans-Peter Seidel, Tino Weinkauf:
  Extended Branch Decomposition Graphs: Structural Comparison of Scalar Data. 41-50
• 
  Attila Gyulassy, Peer-Timo Bremer, Ray W. Grout, Hemanth Kolla, Jacqueline Chen, Valerio Pascucci:
  Stability of Dissipation Elements: A Case Study in Combustion. 51-60

Low-Level Direct Volume Rendering / Filtering

• 
  Rostislav Khlebnikov, Philip Voglreiter, Markus Steinberger, Bernhard Kainz, Dieter Schmalstieg:
  Parallel Irradiance Caching for Interactive Monte-Carlo Direct Volume Rendering. 61-70
• 
  Aaron Knoll, Ingo Wald, Paul A. Navrátil, Anne Bowen, Khairi Reda, Michael E. Papka, Kelly P. Gaither:
  RBF Volume Ray Casting on Multicore and Manycore CPUs. 71-80
• 
  Viktor Vad, Balázs Csébfalvi, Peter Rautek, M. Eduard Gröller:
  Towards an Unbiased Comparison of CC, BCC, and FCC Lattices in Terms of Prealiasing. 81-90

High Level Direct Volume Rendering

• 
  Artem Amirkhanov, Bernhard Fröhler, Johann Kastner, M. Eduard Gröller, Christoph Heinzl:
  InSpectr: Multi-Modal Exploration, Visualization, and Analysis of Spectral Data. 91-100
• 
  Shusen Liu, Bei Wang, Peer-Timo Bremer, Valerio Pascucci:
  Distortion-Guided Structure-Driven Interactive Exploration of High-Dimensional Data. 101-110
• 
  Xie Xu, Elham Sakhaee, Alireza Entezari:
  Volumetric Data Reduction in a Compressed Sensing Framework. 111-120

BioMedical I

• 
  Niels H. L. C. de Hoon, Roy van Pelt, Andrei C. Jalba, Anna Vilanova:
  4D MRI Flow Coupled to Physics-Based Fluid Simulation for Blood-Flow Visualization. 121-130
• 
  Roy van Pelt, Rocco Gasteiger, Kai Lawonn, Monique Meuschke, Bernhard Preim:
  Comparative Blood Flow Visualization for Cerebral Aneurysm Treatment Assessment. 131-140
• 
  Mathieu Le Muzic, Július Parulek, Anne-Kristin Stavrum, Ivan Viola:
  Illustrative Visualization of Molecular Reactions using Omniscient Intelligence and Passive Agents. 141-150

BioMedical II

• 
  L. Zhou, C. Hansen:
  GuideME: Slice-guided Semiautomatic Multivariate Exploration of Volumes. 151-160
• 
  Paul van der Corput, Johan Arends, Jarke J. van Wijk:
  Visualization of Medicine Prescription Behavior. 161-170

Molecular Visualization

• 
  Alper Sarikaya, Danielle Albers, Jake Mitchell, Michael Gleicher:
  Visualizing Validation of Protein Surface Classifiers. 171-180
• 
  Kai Lawonn, Michael Krone, Thomas Ertl, Bernhard Preim:
  Line Integral Convolution for Real-Time Illustration of Molecular Surface Shape and Salient Regions. 181-190
• 
  Katrin Scharnowski, Michael Krone, Guido Reina, Tobias Kulschewski, Jürgen Pleiss, Thomas Ertl:
  Comparative Visualization of Molecular Surfaces Using Deformable Models. 191-200

Document and Text Visualization

• 
  Daniela Oelke, Hendrik Strobelt, Christian Rohrdantz, Iryna Gurevych, Oliver Deussen:
  Comparative Exploration of Document Collections: a Visual Analytics Approach. 201-210
• 
  Artjom Kochtchi, Tatiana von Landesberger, Chris Biemann:
  Networks of Names: Visual Exploration and Semi-Automatic Tagging of Social Networks from Newspaper Articles. 211-220
• 
  Enamul Hoque, Giuseppe Carenini:
  ConVis: A Visual Text Analytic System for Exploring Blog Conversations. 221-230

Cognition and Perception

• 
  Sebastian Mittelstädt, Andreas Stoffel, Daniel A. Keim:
  Methods for Compensating Contrast Effects in Information Visualization. 231-240
• 
  Min Chen, Simon J. Walton, Kai Berger, Jeyarajan Thiyagalingam, Brian Duffy, Hui Fang, Cameron Holloway, Anne E. Trefethen:
  Visual Multiplexing. 241-250
• 
  Mershack Okoe, Sayeed Safayet Alam, Radu Jianu:
  A Gaze-enabled Graph Visualization to Improve Graph Reading Tasks. 251-260

Geographic Visualization

• 
  Joel Lanir, Peter Bak, Tsvi Kuflik:
  Visualizing Proximity-Based Spatiotemporal Behavior of Museum Visitors using Tangram Diagrams. 261-270
• 
  Pio Claudio, Sung-Eui Yoon:
  Metro Transit-Centric Visualization for City Tour Planning. 271-280
• 
  Jürgen Waser, Artem Konev, Bernhard Sadransky, Zsolt Horváth, Hrvoje Ribicic, Robert Carnecky, P. Kluding, Benjamin Schindler:
  Many Plans: Multidimensional Ensembles for Visual Decision Support in Flood Management. 281-290

Data Relationships

• 
  Jürgen Bernard, Martin Steiger, Sven Widmer, Hendrik Lücke-Tieke, Thorsten May, Jörn Kohlhammer:
  Visual-interactive Exploration of Interesting Multivariate Relations in Mixed Research Data Sets. 291-300
• 
  A. Yates, Amy Webb, Michael Sharpnack, H. Chamberlin, Kun Huang, Raghu Machiraju:
  Visualizing Multidimensional Data with Glyph SPLOMs. 301-310
• 
  Alexander Kachkaev, Jo Wood, Jason Dykes:
  Glyphs for Exploring Crowd-sourced Subjective Survey Classification. 311-320

Applications

• 
  Timo Oster, Dirk J. Lehmann, Gordon Fru, Holger Theisel, Dominique Thévenin:
  Sparse Representation and Visualization for Direct Numerical Simulation of Premixed Combustion. 321-330
• 
  Kaiyu Zhao, Matthew O. Ward, Elke A. Rundensteiner, Huong N. Higgins:
  LoVis: Local Pattern Visualization for Model Refinement. 331-340
• 
  Jorge Poco, Aritra Dasgupta, Yaxing Wei, William W. Hargrove, Christopher R. Schwalm, Robert B. Cook, Enrico Bertini, Cláudio T. Silva:
  SimilarityExplorer: A Visual Inter-Comparison Tool for Multifaceted Climate Data. 341-350

Design Study

• 
  Arvind Satyanarayan, Jeffrey Heer:
  Lyra: An Interactive Visualization Design Environment. 351-360
• 
  Arvind Satyanarayan, Jeffrey Heer:
  Authoring Narrative Visualizations with Ellipsis. 361-370
• 
  Cristina Conati, Giuseppe Carenini, Enamul Hoque, Ben Steichen, Dereck Toker:
  Evaluating the Impact of User Characteristics and Different Layouts on an Interactive Visualization for Decision Making. 371-380

Graph Visualization

• 
  Stefan Gladisch, Heidrun Schumann, M. Ernst, G. Füllen, Christian Tominski:
  Semi-Automatic Editing of Graphs with Customized Layouts. 381-390
• 
  M. Hosseinkhani Loorak, Philip W. L. Fong, Sheelagh Carpendale:
  Papilio: Visualizing Android Application Permissions. 391-400
• 
  Martin Steiger, Jürgen Bernard, Sebastian Mittelstädt, Hendrik Lücke-Tieke, Daniel A. Keim, Thorsten May, Jörn Kohlhammer:
  Visual Analysis of Time-Series Similarities for Anomaly Detection in Sensor Networks. 401-410

Visual Analysis

• 
  Michael Behrisch, James Davey, Fabian Fischer, Olivier Thonnard, Tobias Schreck, Daniel A. Keim, Jörn Kohlhammer:
  Visual Analysis of Sets of Heterogeneous Matrices Using Projection-Based Distance Functions and Semantic Zoom. 411-420

Volume 33, Number 4, July 2014

Illustration and Stylization

• 
  Jakub Fiser, Michal Lukác, Ondrej Jamriska, Martin Cadík, Yotam I. Gingold, Paul Asente, Daniel Sýkora:
  Color Me Noisy: Example-based Rendering of Hand-colored Animations with Temporal Noise Control. 1-10
• 
  Christian Richardt, Jorge Lopez-Moreno, Adrien Bousseau, Maneesh Agrawala, George Drettakis:
  Vectorising Bitmaps into Semi-Transparent Gradient Layers. 11-19
• 
  Yiming Liu, Michael F. Cohen, Matthew Uyttendaele, Szymon Rusinkiewicz:
  AutoStyle: Automatic Style Transfer from Image Collections to Users' Images. 21-31

GPU Rendering

• 
  Josiah Manson, Scott Schaefer:
  Bilinear Accelerated Filter Approximation. 33-40
• 
  George Alex Koulieris, George Drettakis, Douglas W. Cunningham, Katerina Mania:
  C-LOD: Context-aware Material Level-of-Detail applied to Mobile Graphics. 41-49

Video and Textures

• 
  Jing Liao, Rodolfo S. Lima, Diego Nehab, Hugues Hoppe, Pedro V. Sander:
  Semi-Automated Video Morphing. 51-60
• 
  Jiamin Bai, Aseem Agarwala, Maneesh Agrawala, Ravi Ramamoorthi:
  User-Assisted Video Stabilization. 61-70
• 
  Lena Gieseke, Sebastian Koch, Jens-Uwe Hahn, Martin Fuchs:
  Interactive Parameter Retrieval for Two-Tone Procedural Textures. 71-79

Reconstruction and Denoising

• 
  Jacob Munkberg, Karthik Vaidyanathan, Jon Hasselgren, Petrik Clarberg, Tomas Akenine-Möller:
  Layered Reconstruction for Defocus and Motion Blur. 81-92

Sampling

• 
  Kartic Subr, Derek Nowrouzezahrai, Wojciech Jarosz, Jan Kautz, Kenny Mitchell:
  Error analysis of estimators that use combinations of stochastic sampling strategies for direct illumination. 93-102
•