The rendering of 3D models and scenes has been a major, long-standing challenge in computer graphics that can be divided into two major subfields. Real-time rendering refers to the real-time synthesis of images on commodity graphics hardware to facilitate interaction for visualizations or computer games. The field of physically based rendering focuses on algorithms that accurately simulate the physics of light for use in the movie industry, architectural visualizations, etc. Compared to real-time rendering methods, these algorithms generally require a considerable amount of time (i.e., hours up to days) to generate acceptable results.

In the context of real-time rendering, our work revolves around the development of algorithms to achieve higher visual quality. Furthermore, we work on techniques to accelerate physically based rendering algorithms to make them viable for interactive rendering. Another aspect of our research work revolves around tools that facilitate the work of content creators.


178 Publications found:
Image Bib Reference Publication Type
Markus Schütz, Stefan Ohrhallinger, Michael Wimmer
Fast Out-of-Core Octree Generation for Massive Point Clouds
TR-193-02-2020-3, August 2020
Technical Report
Christian Freude, Hiroyuki Sakai, Károly Zsolnai-Fehér, Michael Wimmer
R-Score: A Novel Approach to Compare Monte Carlo Renderings
TR-193-02-2020-4, August 2020 [technical-report]
Technical Report
Linus Horvath, Bernhard Kerbl, Michael Wimmer
Improved Triangle Encoding for Cached Adaptive Tessellation
Poster shown at HPG 2020 ( 1. May 2020-22. June 2020)
[paper] [poster]
Károly Zsolnai-Fehér, Peter Wonka, Michael Wimmer
Photorealistic Material Editing Through Direct Image Manipulation
Computer Graphics Forum, 39(4), June 2020. [paper] [Supplementary video]
Journal Paper with Conference Talk
Christian Luksch, Lukas Prost, Michael Wimmer
Real-Time Approximation of Photometric Polygonal Lights
Proc. ACM Comput. Graph. Interact. Tech., 3(1):4.1-4.18, May 2020. [image] [Paper] [Video]
Journal Paper (without talk)
Markus Schütz, Gottfried Mandlburger, Johannes Otepka, Michael Wimmer
Progressive Real-Time Rendering of One Billion Points Without Hierarchical Acceleration Structures
Computer Graphics Forum, 39(2):1-1, May 2020. [paper]
Journal Paper with Conference Talk
Wolfgang Tatzgern, Benedikt Mayr, Bernhard Kerbl, Markus Steinberger
Stochastic Substitute Trees for Real-Time Global Illumination
In Symposium on Interactive 3D Graphics and Games, pages 1-9. May 2020.
Conference Paper
Johannes Unterguggenberger, Bernhard Kerbl, Markus Steinberger, Dieter Schmalstieg, Michael Wimmer
Fast Multi-View Rendering for Real-Time Applications
In Eurographics Symposium on Parallel Graphics and Visualization, pages 13-23. May 2020.
Conference Paper
Katharina Krösl, Carmine Elvezio, Matthias Hürbe, Sonja Karst, Steven Feiner, Michael Wimmer
XREye: Simulating Visual Impairments in Eye-Tracked XR
In 2020 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW). March 2020.
[extended abstract] [image] [poster] [video]
Other Reviewed Publication
Károly Zsolnai-Fehér
Photorealistic Material Learning and Synthesis
Supervisor: Michael Wimmer
Duration: 2013-2019
Tobias Klein
Instant Construction of Atomistic Models for Visualization in Integrative Cell Biology
Supervisor: Ivan Viola
Duration: 2016-2019
Markus Schütz, Michael Wimmer
Rendering Point Clouds with Compute Shaders
Poster shown at SIGGRAPH Asia (November 2019)
Tobias Klein, Ivan Viola, Meister Eduard Gröller, Peter Mindek
Multi-Scale Procedural Animations of Microtubule Dynamics Based on Measured Data
IEEE Transactions on Visualization and Computer Graphics, 26(1):622-632, August 2019. [paper]
Journal Paper with Conference Talk
Adam Celarek, Wenzel Jakob, Michael Wimmer, Jaakko Lehtinen
Quantifying the Error of Light Transport Algorithms
Computer Graphics Forum, 38(4):111-121, July 2019. [paper_preprint] [Git repository]
Journal Paper with Conference Talk
Katharina Krösl
Simulating Vision Impairments in VR and AR
[extended abstract] [image] [video]
Other Reviewed Publication
Daniel Cornel, Andreas Buttinger-Kreuzhuber, Artem Konev, Zsolt Horvath, Michael Wimmer, Raimund Heidrich, Jürgen Waser
Interactive Visualization of Flood and Heavy Rain Simulations
Computer Graphics Forum, 38(3):25-39, June 2019. [image]
Journal Paper with Conference Talk
Florian Michelic, Michael Kenzel, Karl Haubenwallner, Bernhard Kerbl, Markus Steinberger
Real-time Rendering of Procedural Planets at Arbitrary Altitudes
Poster shown at I3D 2019 (21. May 2019-23. May 2019)
Christian Luksch, Michael Wimmer, Michael Schwärzler
Incrementally Baked Global Illumination
In Proceedings of the 33rd Symposium on Interactive 3D Graphics and Games (I3D 2019), pages 4:1-4:10. May 2019.
[draft] [teaser] [video]
Conference Paper
Harald Steinlechner, Bernhard Rainer, Michael Schwärzler, Georg Haaser, Attila Szabo, Stefan Maierhofer, Michael Wimmer
Adaptive Point-cloud Segmentation for Assisted Interactions
In Proceedings of the 33rd Symposium on Interactive 3D Graphics and Games, pages 14:1-14:9. May 2019.
Conference Paper
Markus Schütz, Michael Wimmer
Live Coding of a VR Render Engine in VR
Poster shown at IEEE VR 2019 (March 2019)
Jakub Boksansky, Michael Wimmer, Jiří Bittner
Ray Traced Shadows: Maintaining Real-Time Frame Rates
In Ray Tracing Gems: High-Quality and Real-Time Rendering with DXR and Other APIs, pages 159-182, March 2019
Article in a Book
Markus Schütz, Katharina Krösl, Michael Wimmer
Real-Time Continuous Level of Detail Rendering of Point Clouds
In 2019 IEEE Conference on Virtual Reality and 3D User Interfaces, pages 103-110. March 2019.
Conference Paper
Georg Zotti, Florian Schaukowitsch, Michael Wimmer, Wolfgang Neubauer
Virtual Archaeoastronomy: Stellarium for Research and Outreach
In Archaeoastronomy in the Roman World (Proceedings 16th Conference of the Italian Society for Archaeoastronomy), pages 187-205. March 2019.
Conference Paper
Katharina Krösl, Carmine Elvezio, Matthias Hürbe, Sonja Karst, Michael Wimmer, Steven Feiner
ICthroughVR: Illuminating Cataracts through Virtual Reality
In 2019 IEEE Conference on Virtual Reality and 3D User Interfaces, pages 655-663. March 2019.
[image] [paper_preprint] [video]
Conference Paper
Harald Steinlechner, Georg Haaser, Bernd Oberdorfer, Daniel Habe, Stefan Maierhofer, Michael Schwärzler, Meister Eduard Gröller
A Novel Approach for Immediate, Interactive CT Data Visualization andEvaluation using GPU-based Segmentation and Visual Analysis
In International Conference on Industrial Computed Tomography (ICT) 2019, pages 1-6. February 2019.
Conference Paper
Artem Konev, Manuel Matusich, Ivan Viola, Hendrik Schulze, Daniel Cornel, Jürgen Waser
Fast cutaway visualization of sub-terrain tubular networks
Computers & Graphics, 75(5):25-35, October 2018.
Journal Paper (without talk)
Katharina Krösl
[DC] Computational Design of Smart Lighting Systems for Visually Impaired People, using VR and AR Simulations
In Proceedings of the 2018 IEEE International Symposium on Mixed and Augmented Reality (ISMAR-Adjunct). October 2018.
Conference Paper
Markus Schütz, Michael Wimmer
Progressive Real-Time Rendering of Unprocessed Point Clouds
Poster shown at ACM SIGGRAPH 2018 (12. August 2018-16. August 2018)
[abstract] [poster]
Károly Zsolnai-Fehér, Peter Wonka, Michael Wimmer
Gaussian Material Synthesis
ACM Transactions on Graphics (SIGGRAPH 2018), 37(4):76:1-76:14, August 2018. [paper] [supplementary] [video]
Journal Paper with Conference Talk
Katharina Krösl, Anna Felnhofer, Johanna X. Kafka, Laura Schuster, Alexandra Rinnerthaler, Michael Wimmer, Oswald D. Kothgassner
The Virtual Schoolyard: Attention Training in Virtual Reality for Children with Attentional Disorders
Poster shown at ACM SIGGRAPH 2018 (12. August 2018-16. August 2018)
[abstract] [poster] [video]
Michael Schwärzler
Advances in the Multimodal 3D Reconstruction and Modeling of Buildings
Supervisor: Michael Wimmer
Duration: 2010-2018
[image] [PhD-Thesis]
Katharina Krösl, Dominik Bauer, Michael Schwärzler, Henry Fuchs, Michael Wimmer, Georg Suter
A VR-based user study on the effects of vision impairments on recognition distances of escape-route signs in buildings
The Visual Computer, 34(6-8):911-923, April 2018. [Paper]
Journal Paper with Conference Talk
Andreas Walch, Katharina Krösl, Christian Luksch, David Pichler, Thomas Pipp, Michael Schwärzler
An Automated Verification Workflow for Planned Lighting Setups using BIM
In REAL CORP 2018, Proceedings, pages 55-65. April 2018.
Conference Paper
Reinhold Preiner
Dynamic and Probabilistic Point-Cloud Processing
Supervisor: Michael Wimmer
Duration: 2010-2017
Georg Zotti, Florian Schaukowitsch, Michael Wimmer
Beyond 3D Models: Simulation of Temporally Evolving Models in Stellarium
Mediterranean Archaeology and Archaeometry, 18(4):501-506, September 2017. [paper]
Journal Paper with Conference Talk
Katharina Krösl, Christian Luksch, Michael Schwärzler, Michael Wimmer
LiteMaker: Interactive Luminaire Development using Progressive Photon Tracing and Multi-Resolution Upsampling
In Vision, Modeling & Visualization, pages 1-8. September 2017.
[paper] [video]
Conference Paper
Daniel Cornel, Hiroyuki Sakai, Christian Luksch, Michael Wimmer
Forced Random Sampling: fast generation of importance-guided blue-noise samples
The Visual Computer, 33(6):833-843, June 2017. [paper]
Journal Paper with Conference Talk
Klemens Jahrmann, Michael Wimmer
Responsive Real-Time Grass Rendering for General 3D Scenes
In Proceedings of the 21st ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games, pages 6:1-6:10. February 2017.
Conference Paper
Georg Zotti, Florian Schaukowitsch, Michael Wimmer
The Skyscape Planetarium
Culture and Cosmos, 21(1):269-281, 2017. [paper]
Journal Paper with Conference Talk
Peter Mindek, David Kouřil, Johannes Sorger, David Toloudis, Blair Lyons, Graham Johnson, Meister Eduard Gröller, Ivan Viola
Visualization Multi-Pipeline for Communicating Biology
IEEE Transactions on Visualization and Computer Graphics, 24(1), 2017. [Paper] [Preview Movie] [Slides]
Journal Paper with Conference Talk
Claus Scheiblauer, Norbert Zimmermann, Michael Wimmer
Workflow for Creating and Rendering Huge Point Models
In Fundamentals of Virtual Archaeology: Theory and Practice, 2017
Article in a Book
Tamy Boubekeur, Paolo Cignoni, Elmar Eisemann, Michael Goesele, Reinhard Klein, Stefan Roth, Michael Weinmann, Michael Wimmer
Harvesting Dynamic 3DWorlds from Commodity Sensor Clouds
In Proceedings of the 14th Eurographics Workshop on Graphics and Cultural Heritage, pages 19-22. October 2016.
Conference Paper
Murat Arikan, Reinhold Preiner, Michael Wimmer
Multi-Depth-Map Raytracing for Efficient Large-Scene Reconstruction
IEEE Transactions on Visualization & Computer Graphics, 22(2):1127-1137, February 2016. [draft] [image]
Journal Paper (without talk)
Johannes Sorger, Thomas Ortner, Christian Luksch, Michael Schwärzler, Meister Eduard Gröller, Harald Piringer
LiteVis: Integrated Visualization for Simulation-Based Decision Support in Lighting Design
Visualization and Computer Graphics, IEEE Transactions on, 22(1):290-299, January 2016. [teaser]
Journal Paper with Conference Talk
P. Ljung, J. Krüger, Meister Eduard Gröller, Markus Hadwiger, C. Hansen, Anders Ynnerman
State of the Art in Transfer Functions for Direct Volume Rendering
Computer Graphics Forum (2016), 35(3):669-691, 2016. [image] [paper]
Journal Paper with Conference Talk
Markus Schütz, Michael Wimmer
High-Quality Point Based Rendering Using Fast Single Pass Interpolation
In Proceedings of Digital Heritage 2015 Short Papers, pages 369-372. September 2015.
Conference Paper
Jorge Jimenez, Károly Zsolnai-Fehér, Adrian Jarabo, Christian Freude, Thomas Auzinger, Xian-Chun Wu, Javier van der Pahlen, Michael Wimmer, Diego Gutierrez
Separable Subsurface Scattering
Computer Graphics Forum, 34(6):188-197, June 2015. [paper]
Journal Paper with Conference Talk
Oliver Mattausch, Jiří Bittner, Alberto Jaspe, Enrico Gobbetti, Michael Wimmer, Renato Pajarola
CHC+RT: Coherent Hierarchical Culling for Ray Tracing
Computer Graphics Forum, 34(2):537-548, May 2015. [draft]
Journal Paper with Conference Talk
Clemens Rögner, Michael Wimmer, Johannes Hanika, Carsten Dachsbacher
Image-based Reprojection Using a Non-local Means Algorithm
TR-186-2-15-02, April 2015 [techreport]
Technical Report
Felix Kreuzer, Johannes Kopf, Michael Wimmer
Depixelizing Pixel Art in Real-Time
Poster shown at 19th Symposium on Interactive 3D Graphics and Games (27. February 2015- 1. March 2015) In Proceedings of the 19th Symposium on Interactive 3D Graphics and Games , pages 130-130.
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Funded Projects

The Research Cluster "Smart Communities and Technologies" (Smart CT) at TU Wien will provide the scientific underpinnings for next-generation complex smart city and communities infrastructures. Cities are ever-evolving, complex cyber physical systems of systems covering a magnitude of different areas. The initial concept of smart cities and communities started with cities utilizing communication technologies to deliver services to their citizens and evolved to using information technology to be smarter and more efficient about the utilization of their resources. In recent years however, information technology has changed significantly, and with it the resources and areas addressable by a smart city have broadened considerably. They now cover areas like smart buildings, smart products and production, smart traffic systems and roads, autonomous driving, smart grids for managing energy hubs and electric car utilization or urban environmental systems research.

3D spatialization creates the link between the internet of cities infrastructure and the actual 3D world in which a city is embedded in order to perform advanced computation and visualization tasks. Sensors, actuators and users are embedded in a complex 3D environment that is constantly changing. Acquiring, modeling and visualizing this dynamic 3D environment are the challenges we need to face using methods from Visual Computing and Computer Graphics. 3D Spatialization aims to make a city aware of its 3D environment, allowing it to perform spatial reasoning to solve problems like visibility, accessibility, lighting, and energy efficiency.
no funding
This Marie-Curie project creates a leading European-wide doctoral college for research in Advanced Visual and Geometric
Computing for 3D Capture, Display, and Fabrication.
Horizon 2020 Marie Sklodowska-Curie Actions (MSCA) ITN 813170
The project aims to develop new statistical and algorithmic methods to improve light-transport simulation for offline rendering.
FWF P27974
Contact: Michael Wimmer
This project will research methods to test and compare global-illumination algorithms as well as filtering algorithms, and also develop test data sets for this purpose.
Contact: Michael Wimmer
Harvest4D investigates the whole acquisition, modeling and rendering pipeline for incidental data capture.
EU 7th Framework Program 323567
The projects develops new mathematical foundations for global-illumination algorithms.
FWF P23700-N23
Contact: Michael Wimmer
This project aims at analysing the traffic flow of open roads in real time by a sensor fusion of radar data with video feeds. Radar gives an accurate position and velocity of vehicles making computer vision methods more robust in computing their spatial extent and classification from video streams. In this way the huge amount of raw data is reduced to semantically relevant information, which is highly memory efficient, anonymous and sufficient to reconstruct traffic flow over long time periods. Another important goal is a sophisticated 3D visualization of the reconstructed traffic flow providing interactive tools for visual analysis. Information obtained in this way will significantly contribute in adopting measures to increase traffic safety.
FFG 835948 - FIT-IT
Contact: Michael Wimmer
The aim of this project is to simulate the mutual influence between real and virtual objects in mixed reality applications.
FFG 820916 - FIT-IT Visual Computing
Contact: Andreas Traxler
In this project we study new representation and rendering methods for surface detail in real time.
FWF P20768-N13
Laser scanning is an important tool in cultural heritage for documenting the state of archaeological monuments. The data produced by laser scanning is ever increasing, with the latest generation of laser scanners generating a billion of points in one measurement pass. To colorize the laser scans, additional photographs are taken. Managing these huge amounts of data in terms of size is a challenge on its own, but also to ensure the quality of the resulting point-based models is of utmost importance for the further development of laser scanning as a standard technique in cultural heritage. We identified three topics that can drive forward the integration of laser scanning in the everyday work of archaeologists.
FFG 825842 - FIT-IT Visual Computing
Contact: Michael Wimmer
May 2008 - Apr 2011 General Purpose Visibility
Visibility culling is a fundamental problem of computer graphics, and is of crucial importance for many applications, like game development or architectural design. For example, interactively rendering a model containing hundreds of millions of polygons like the Boeing 777 model shown on the cover page is only possible when invisible parts of the model are "culled" away. Solving the visibility problem has been an important research topic for many years, and countless methods have been proposed. Amazingly, most approaches still have more or less serious issues that prevent their widespread use. Preprocessed visibility solutions attempt to solve the problem in an offline step, but are often slow, lack robustness, and are hard to implement. Online culling algorithms have a lot of potential since they can be used on arbitrary scenes, but they induce an overhead during rendering which is unacceptable for applications that strive for optimal performance. We believe that basic research problems remain unsolved until this day for preprocessed visibility as well as for online culling, and the goal of this project is to tackle and solve the majority of these problems. In order to do this, we have to gain more insight into the complex properties of visibility, which are still not entirely understood. Our proposed methods have applications in various fields, like game development, architectural design, urban visualization, or massive model visualization.
FWF P21130-N13
Contact: Michael Wimmer
The aim of the Scanopy project is to provide efficient algorithms for working with 3D laser scan data. The first main challenge is to improve the quality of raw scan data via filtering, scan completion and repair, making use of image information and symmetries. The second challenge is to and second to develop efficient data structures and algorithm to allow displaying huge point-based models. The third challenge is to improve the appearance of the models via lighting and relighting.
FFG 812126
Contact: Michael Wimmer
Nov 2004 - Nov 2007 TreeLumination
The aim of the project Treelumination is to enhance the realism and visual quality of applications that need to display trees and tree-like plants in a real-time setting.
FWF P17261-N04
Contact: Michael Wimmer
Oct 2004 - Jun 2007 GameTools
The GameTools Project (GTP) researches and implements next generation realtime 3D Libraries for Geometry/Plants, Visibility and Global Illumination under C++/DirectX9. Platforms: OGRE for PC and Shark3D middleware for PC & consoles.
EU IST - 6th Framework Program