Stefan Ohrhallinger

Function

Senior Researcher, located in room HD 05 17, see map

Acquired Projects

2020 - 2026: Modeling the World at Scale (WWTF): €578k.
2020 - 2022: Participation in Photogrammetry made easy (IPA): €50k.
2019 - 2023: Superhumans: Walking Through Walls (FWF): €333k.
2016 - 2020: Real-Time Shape Acquisition with Sensor-Specific Precision (FWF): €318k.
2014 - 2016: Participation and co-organization in Harvest4D (EU, 7th Framework Programme).

Job Offers

Please contact me if you are interested in one of my topics (see below, paid up to €1000, contact me for details) or want to propose your own

Teaching

WS 2024/25 (fall/winter): Seminar in Computer Graphics
SS 2024 (spring): Seminar in Scientific Writing
WS 2023/24 (fall/winter): Seminar in Computer Graphics
SS 2023 (spring): VU Modeling, Seminar in Scientific Writing
WS 2022/23 (fall/winter): Seminar in Computer Graphics
SS 2022 (spring): Seminar in Scientific Writing (renamed from Seminar Wissenschaftliches Arbeiten)
WS 2021/22 (fall/winter): Seminar in Computer Graphics
SS 2021 (spring): VU Modeling
WS 2018/19 (fall/winter): Seminar aus Computergraphik, VU Graphics, Uni Wien
SS 2018 (spring): Unit Geometry and Tessellation in Applications of Real-Time Rendering, 20.03. 13:00 - 15:00 Seminar Wissenschaftliches Arbeiten (how to do research)
WS 2017/18 (fall/winter): Seminar aus Computergraphik
SS 2017 (spring): Seminar Wissenschaftliches Arbeiten (how to do research)
WS 2016/17 (fall/winter): Seminar aus Computergraphik
SS 2016 (spring): Seminar Wissenschaftliches Arbeiten (how to do research)
WS 2015/16 (fall/winter): Seminar aus Computergraphik
SS 2015 (spring): Seminar Wissenschaftliches Arbeiten (how to do research)
WS 2014/15 (fall/winter): Seminar aus Computergraphik
SS 2014 (spring): Seminar Wissenschaftliches Arbeiten (how to do research)
WS 2013/14 (fall/winter): Seminar aus Computergraphik, Unit Surface Reconstruction in Modeling in Computer Graphics, 29.10. 15:00 - 16:30
SS 2013 (spring): Seminar Wissenschaftliches Arbeiten (how to do research)

Interests

Point-based Graphics
Surface Reconstruction
Mesh Resampling
Virtual/Augmented Reality
Using Depth from Sensors

Biography

Stefan Ohrhallinger is a senior researcher at the Institute of Visual Computing and Human-Centered Technology at TU Wien, Austria. He graduated with a Master of Business Informatics (Wirtschaftsinformatik) in 1997 from Johannes-Kepler University Linz, Austria. From 1990 to 2009 he developed software for various projects in Austria, the United States and Canada, e.g. as the software architect for the Zentrales Melderegister (Central Population Register) for the Ministery of Interior, Austria.

In 2013 he obtained his PhD from Concordia University, Montréal, Canada. Since October 2012 he is a research associate at TU Wien, working mainly on surface reconstruction, geometry processing and point-based graphics. He has reviewed for major conferences and journals in Computer Graphics, including TOG, TVCG, SGP, CAG, EGPGV, GI, Sensors, and SIGGR PH, and served on the IPCs of GCH'18, Eurographics'21, '22, Pacific Graphics'22, '23, and SMI'24. He co-coordinated Eurographics'21 in Vienna.

Topics for Projects and Theses

€1000 3D Gaussian Splat Reconstruction
BA, PR, DA; 1-3 persons
€1000 Sphere Mesh Raycasting
BA, PR, DA; 1-3 persons
€1000 Reconstruct Outdoor Scenes
BA, PR, DA; 1-3 persons
€1000: Sharp Features from Scans
BA, PR, DA; 1-3 persons
€1000: Classify Unseen Objects
BA, PR, DA; 1-3 persons
€1000 CycleSafely
BA, PR, DA; 1-3 persons
€1000: Scene Change Detect App
BA, PR, DA; 1-3 persons
€1000: Using a Drone for Automated 3D Scanning
BA, PR, DA; 1 person

Research Projects

Modeling the World at Scale
May 2020 - Apr 2026

Courses in the current semester

Seminar aus Computergraphik
SE 186.175: Course page | TISS

Publications

28 Publications found:

Image	Bib Reference	Publication Type
2024
	Diana Marin , Filippo Maggioli, Simone Melzi, Stefan Ohrhallinger , Michael Wimmer Reconstructing Curves from Sparse Samples on Riemannian Manifolds Computer Graphics Forum, 43(5):e15136, June 2024.	Journal Paper with Conference Talk
	Stefan Ohrhallinger , Diana Marin Sampling and reconstructing point clouds, 28. May 2024, Graz	Invited Talk
	Diana Marin , Patrick Komon , Stefan Ohrhallinger , Michael Wimmer Distributed Surface Reconstruction Poster shown at 45th Annual Conference of the European Association for Computer Graphics (Eurographics 2024) (22. April 2024-26. April 2024) In EG 2024 - Posters .	Poster
	Diana Marin , Stefan Ohrhallinger , Michael Wimmer Parameter-free connectivity for point clouds In Proceedings of the 19th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 1, HUCAPP and IVAPP, pages 92-102. February 2024. [paper]	Conference Paper
	Amal Dev Parakkat, Stefan Ohrhallinger , Elmar Eisemann, Pooran Memari BallMerge: High‐quality Fast Surface Reconstruction via Voronoi Balls Computer Graphics Forum, 43(2), 2024. [paper]	Journal Paper with Conference Talk
2023
	Stefan Ohrhallinger , Amal Dev Parakkat, Pooran Memari Feature-Sized Sampling for Vector Line Art In Proceedings of the 31th Pacific Conference on Computer Graphics and Applications, pages 1-2. October 2023. [paper] [talk]	Conference Paper
	Diana Marin , Stefan Ohrhallinger , Michael Wimmer Parameter-Free and Improved Connectivity for Point Clouds Poster shown at Eurographics 2023 ( 8. May 2023-12. May 2023) In Eurographics 2023 - Posters , pages 5-6. [paper]	Poster
2022
	Diana Marin , Stefan Ohrhallinger , Michael Wimmer SIGDT: 2D Curve Reconstruction Computer Graphics Forum, 41(7):25-36, October 2022. [Paper] [Paper]	Journal Paper with Conference Talk
	Stefan Ohrhallinger Curve/Surface Reconstruction and Occlusion-enabled Applications, 2. May 2022, LiX Polytechnique, Saclay-Paris, France	Invited Talk
	Stefan Ohrhallinger , Amal Dev Parakkat, Jiju Peethambaran Shape Reconstruction: From Theory to Practice In Eurographics 2022 - Tutorials. April 2022. [website]	Other Reviewed Publication
	Diana Marin , Stefan Ohrhallinger , Michael Wimmer SIG-based Curve Reconstruction Poster shown at Eurographics 2022 - 43rd Annual Conference of the European Association for Computer Graphics (25. April 2022-29. April 2022) In Eurographics 2022 - Posters . [paper] [poster] [Paper]	Poster
	Stefan Ohrhallinger , Amal Dev Parakkat, Jiju Peethambaran ECCV 2022 Tutorial on Outline and Shape Reconstruction in 2D, 22-10-23-22-10-27, Tel Aviv	Invited Talk
2021
	Mohamed Radwan, Stefan Ohrhallinger , Michael Wimmer Fast occlusion-based point cloud exploration The Visual Computer Journal, 37:2769-2781, September 2021. [paper]	Journal Paper with Conference Talk
	Stefan Ohrhallinger , Jiju Peethambaran, Amal Dev Parakkat, Tamal K Dey, Ramanathan Muthuganapathy 2D Points Curve Reconstruction Survey and Benchmark Computer Graphics Forum, 1:611-632, March 2021. [paper] [Website]	Journal Paper with Conference Talk
2020
	Markus Schütz, Stefan Ohrhallinger , Michael Wimmer Fast Out-of-Core Octree Generation for Massive Point Clouds Computer Graphics Forum, 39(7):1-13, November 2020. [paper]	Journal Paper with Conference Talk
	Philipp Erler , Paul Guerrero, Stefan Ohrhallinger , Michael Wimmer , Niloy Mitra Points2Surf: Learning Implicit Surfaces from Point Clouds In Computer Vision -- ECCV 2020, pages 108-124. October 2020. [points2surf_paper] [short video]	Conference Paper
	Kurt Leimer, Andreas Winkler, Stefan Ohrhallinger , Przemyslaw Musialski Pose to Seat: Automated design of body-supporting surfaces Computer Aided Geometric Design, 79:1-1, April 2020. [image] [Paper] [paper]	Journal Paper (without talk)
2019
	Stefan Ohrhallinger , Michael Wimmer FitConnect: Connecting Noisy 2D Samples by Fitted Neighborhoods Computer Graphics Forum, 38(1):126-137, February 2019. [paper] [Replicability Source Code]	Journal Paper with Conference Talk
	Stefan Ohrhallinger , Adam Celarek X-Mas Card 2019 [image] [pdf]	X-Mas Card
2018
	Stefan Ohrhallinger , Michael Wimmer StretchDenoise: Parametric Curve Reconstruction with Guarantees by Separating Connectivity from Residual Uncertainty of Samples In Proceedings of Pacific Graphics 2018, pages 1-4. August 2018. [image] [paper] [Extended version] [source]	Conference Paper
2017
	Mohamed Radwan, Stefan Ohrhallinger , Elmar Eisemann, Michael Wimmer Cut and Paint: Occlusion-Aware Subset Selection for Surface Processing In Proceedings of Graphics Interface 2017, pages 82-89. May 2017. [paper]	Conference Paper
2016
	Stefan Ohrhallinger , Scott A. Mitchell, Michael Wimmer Curve Reconstruction with Many Fewer Samples Computer Graphics Forum, 35(5):167-176, 2016. [paper] [slides] [Reproducibility Source Code]	Journal Paper with Conference Talk
2014
	Mohamed Radwan, Stefan Ohrhallinger , Michael Wimmer Efficient Collision Detection While Rendering Dynamic Point Clouds In Proceedings of the 2014 Graphics Interface Conference, pages 25-33. May 2014. [paper] [slides]	Conference Paper
2013
	Stefan Ohrhallinger , Sudhir Mudur An Efficient Algorithm for Determining an Aesthetic Shape Connecting Unorganised 2D Points Computer Graphics Forum, 32(8):72-88, December 2013. [paper] [slides-ODP] [slides-PDF] [source code]	Journal Paper with Conference Talk
	Stefan Ohrhallinger , Sudhir Mudur, Michael Wimmer Minimizing Edge Length to Connect Sparsely Sampled Unorganized Point Sets Computers & Graphics (Proceedings of Shape Modeling International 2013), 37(6):645-658, October 2013. [paper] [slides] [source and binaries]	Journal Paper with Conference Talk
2012
	Stefan Ohrhallinger The Intrinsic Shape of Point Clouds Supervisor: Sudhir Mudur Duration: September 2006 — July 2012 [Phd-Thesis]	PhD-Thesis
	Stefan Ohrhallinger , Sudhir Mudur Minimising Longest Edge for Closed Surface Construction from Unorganised 3D Point Sets Poster shown at Eurographics 2012 (Best Poster Award) (13. May 2012-18. May 2012) In Poster Proceedings , pages 25-26. [paper] [poster]	Poster
2011
	Stefan Ohrhallinger , Sudhir Mudur Interpolating an unorganized 2D point cloud with a single closed shape Computer-Aided Design, 43(1):1629-1638, January 2011. [paper]	Journal Paper (without talk)