Publications
2023
A Survey on Discrete Laplacians for General Polygonal Meshes
Eurographics State of the Art Report, 2023.
An Evaluation of Other-Avatar Facial Animation Methods for Social VR
CHI Conference on Human Factors in Computing Systems 2023
Are Embodied Avatars Harmful to our Self-Experience? The Impact of Virtual Embodiment on Body Awareness
CHI Conference on Human Factors in Computing Systems 2023
2022
Does Distance Matter? Embodiment and Perception of Personalized Avatars in Relation to the Self-Observation Distance in Virtual Reality
Frontiers in Virtual Reality 3, 2022.
Automated Blendshape Personalization for Faithful Face Animations Using Commodity Smartphones
Proceedings of ACM Symposium on Virtual Reality Software and Technology (VRST), 2022, pp. 22:1-22:9.
Did it move? Humans use spatio-temporal landmark permanency efficiently for navigation
Journal of Experimental Psychology, 2022.
Plausibility and Perception of Personalized Virtual Humans between Virtual and Augmented Reality
IEEE International Symposium on Mixed and Augmented Reality (ISMAR) 2022, pp. 489-498.
Resize Me! Exploring the User Experience of Embodied Realistic Modulatable Avatars for Body Image Intervention in Virtual Reality
Frontiers in Virtual Reality 3, 2022.
Variational Quadratic Shape Functions for Polygons and Polyhedra
ACM Transaction on Graphics 41(4), 2022, pp. 54:1-54:14.
Virtual Reality for Mind and Body: Does the Sense of Embodiment Towards a Virtual Body Affect Physical Body Awareness?
CHI Conference on Human Factors in Computing Systems 2022, Extended Abstracts
Motor Imagery During Action Observation in Virtual Reality: The Impact of Watching Myself Performing at a Level I Have Not Yet Achieved
International Journal of Sport and Exercise Psychology, 2022.
Layered Character Models for Fast Physics-Based Simulation
2021
Affordable but not Cheap: A Case Study of the Effects of Two 3D-Reconstruction Methods of Virtual Humans
Frontiers in Virtual Reality 2, 2021.
Inside Humans: Creating a Simple Layered Anatomical Model from Human Surface Scans
Frontiers in Virtual Reality 2, 2021.
Marker-less motion capture of insect locomotion with deep neural networks pre-trained on synthetic videos
Frontiers in Behavioral Neuroscience 15, 2021
The Embodiment of Photorealistic Avatars Influences Female Body Weight Perception in Virtual Reality
Proceedings of IEEE VR, 2021, pp. 65-74.
2020
Body Weight Perception of Females using Photorealistic Avatars in Virtual and Augmented Reality
IEEE International Symposium on Mixed and Augmented Reality (ISMAR), 2020, pp. 462-473.
A Compact Patch-Based Representation for Technical Mesh Models
Proceedings of Vision, Modeling and Visualization, 2020, pp. 1-8. (Best Paper Award)
Polygon Laplacian Made Simple
Computer Graphics Forum 39(2), (Proc. Eurographics), 2020, pp. 303-313.
Cognitive training in an everyday-like virtual reality enhances visual-spatial memory capacities in stroke survivors with visual field defects
Topics in Stroke Rehabilitation, 27(6), pp. 442-452, 2020.
2019
VIA VR: A Technology Platform for Virtual Adventures for Healthcare and Well-Being
Proc. of VS-Games 2019.
Superimposed skilled performance in a virtual mirror improves motor performance and cognitive representation of a full-body motor action
Not Alone Here?! Scalability and User Experience of Embodied Ambient Crowds in Distributed Social Virtual Reality
IEEE Transactions on Visualization and Computer Graphics 25(5), (Proc. IEEE VR), 2019, pp. 2133-2144.
A method for automatic forensic facial reconstruction based on dense statistics of soft tissue thickness
PLoS ONE, 14(1), 2019.
Generation of Virtual Humans for Virtual Reality, Medicine, and Domestic Assistance
Motor Learning in Virtual Reality: From Motion to Augmented Feedback
Evolvability-guided Optimization of Linear Deformation Setups for Evolutionary Design Optimization
2018
Proceedings of Eurographics Workshop on Visual Computing for Biology and Medicine, 2018, pp. 67-76.
Orthogonalization of Linear Representations for Efficient Evolutionary Design Optimization
Proceedings of Genetic and Evolutionary Computation Conference (GECCO), 2018, pp. 1356-1363.
Ultra-high temporal resolution of visual presentation using gaming monitors and G-Sync
Behavior Research Methods 50(1), 2018, pp. 26-38.
Training in a comprehensive everyday-like virtual reality environment compared to computerized cognitive training for patients with depression
Computers in Human Behavior 79, 2018, pp. 40-52.
Creating a Virtual Mirror for Motor Learning in Virtual Reality
The Secret of Appeal: Understanding Perception of Realistic and Stylized Faces
PhD Thesis, Bielefeld University, 2018.
2017
Differential effects of face-realism and emotion on event-related brain potentials and their implications for the uncanny valley theory
Scientific Reports 7, 45003, 2017.
The Intelligent Coaching Space: A Demonstration
Proceedings of International Conference on Intelligent Virtual Agents, 2017, pp. 105-108.
Get One or Create One: The Impact of Graded Involvement in a Selection Procedure for a Virtual Agent on Satisfaction and Suitability Ratings
Proceedings of International Conference on Intelligent Virtual Agents, 2017, pp. 109-118.
Preference-guided Adaptation of Deformation Representations for Evolutionary Design Optimization
Proceedings of IEEE Congress on Evolutionary Computation, 2017, pp. 2110-2119.
Multi-objective Representation Setups for Deformation-based Design Optimization
Proceedings of International Conference on Evolutionary Multi-Criterion Optimization (EMO), 2017, pp. 514-528.
Effects of Variability in Synthetic Training Data on Convolutional Neural Networks for 3D Head Reconstruction
Proceedings of IEEE Symposium Series on Computational Intelligence, 2017.
Intelligent Coaching Space - Motor learning and coaching in virtual reality
Proceedings of ISSP World Congress of Sport Psychology, 2017
The OctaVis: A VR-Device for Rehabilitation and Diagnostics of Visuospatial Impairments
Proceedings of Symposium on Solid & Physical Modeling 2017
Computer Aided Design 90, 2017.
2016
Using the virtual reality device Oculus Rift for neuropsychological assessment of visual processing capabilities
Scientific Reports 6, 37016, 2016.
Point Cloud Noise and Outlier Removal for Image-Based 3D Reconstruction
Proceedings of International Conference on 3D Vision, 2016.
Evolvability as a Quality Criterion for Linear Deformation Representations in Evolutionary Optimization
Proceedings of IEEE Congress on Evolutionary Computation, 2016, pp. 901-910 (Runner-Up for Best Student Paper Award).
Non-Negative Kernel Sparse Coding for the Analysis of Motion Data
Proceedings of International Conference on Artificial Neural Networks (ICAAN), 2016, pp. 506-514.
Constrained Space Deformation Techniques for Design Optimization
Computer Aided Design 72, 2016, pp. 40-51.
2015
A Multimodal System for Real-Time Action Instruction in Motor Skill Learning
Proceedings of ACM International Conference on Multimodal Interaction, 2015, pp. 355-362.
ACM Trans. on Graphics 34(6), SIGGRAPH Asia 2015, pp. 184:1-184:12.
Accurate Face Reconstruction through Anisotropic Fitting and Eye Correction
Proceedings of Vision, Modeling and Visualization, 2015, pp. 1-8.
Multi-Level Analysis of Motor Actions as a Basis for Effective Coaching in Virtual Reality
Proceedings of International Symposium on Computer Science in Sport, 2015, pp. 211-214.
Demonstrating the Dialogue System of the Intelligent Coaching Space
Proceedings of SemDial 2015 (GODIAL), pp. 168-169.
On Shape Deformation Techniques for Simulation-based Design Optimization
New Challenges in Grid Generation and Adaptivity for Scientific Computing, SEMA SIMAI Springer Series, 2015, pp. 281-303.
Evolvability of Representations in Complex System Engineering: a Survey
Proceedings of IEEE Congress on Evolutionary Computation, 2015, pp. 1327-1335.
Articulation Estimation and Real-Time Tracking of Human Hand Motions
2014
Constrained Space Deformation for Design Optimization
Proceedia Engineering 82 (Proc. International Meshing Roundtable), 2014, pp. 114-126 (Best Paper Award).
Deformable Registration using Patch-Wise Shape Matching
Graphical Models 76(5), (Proc. GMP), 2014, pp. 554-565.
A Natural Movement Database for Management, Documentation, Visualization, Mining and Modeling of Locomotion Experiments
Proceedings of Living Machines, 2014, pp. 308-319.
IEEE International Conference on Robotics and Automation (ICRA), 2014, pp. 5447-5454.
Real-life memory and spatial navigation in patients with focal epilepsy: Ecological validity of a virtual-reality supermarket task
Epilepsy & Behavior 31, 2014, pp. 57-66
2013
Evaluation of Surround-View and Self-Rotation in the OctaVis VR-System
Proceedings of Joint Virtual Reality Conference, 2013
OctaVis: A Virtual Reality System for Clinical Studies and Rehabilitation
Proceedings of Eurographics Short and Medical Prize Papers, 2013 (EG Medical Prize, 3rd place)
Analysis of Hand Synergies for Inverse Kinematics Hand Tracking
Proceedings of IEEE International Conference on Robotics and Automation (ICRA), Workshop on Hand Synergies, 2013
Learning real-life cognitive abilities in a novel 360° virtual reality supermarket: a neuropsychological study of healthy participants and patients with epilepsy
Journal of NeuroEngineering and Rehabilitation 10(42), 2013
2012
OctaVis: Optimization Techniques for Multi-GPU Multi-View Rendering
Journal of Virtual Reality and Broadcasting 9(6), 2012
Developing design guidelines for characters from analyzing empirical studies on the uncanny valley
Proceedings of ACM International Symposium on Facial Analysis and Animation, 2012
Shape Deformation Tutorial
Graduate School at Eurographics Symp. on Geometry Processing 2012
2011
Proceedings of the 20th International Meshing Roundtable, 2011, pp. 533-550.
Pose Correction by Space-Time Integration
Vision, Modeling and Visualization (VMV), 2011, pp. 33-40.
Proceedings of Eurographics Symposium on Geometry Processing 2011
Computer Graphics Forum 30(5), 2011.
2010
OctaVis: A Simple and Efficient Multi-View Rendering System
Proceedings of GI VR/AR Workshop, 2010, pp. 1-8.
2009
Implementation of Discontinuous Galerkin Kirchhoff-Love Shells
Technical Report No. 622, ETH Zurich, 2009.
2008
A Hardware Processing Unit for Point Sets
Graphics Hardware 2008, pp. 21-31 (Best Paper Award).
Finite Elemente Methoden auf konvexen Polyedern für physikalisch-basierte Schnittsimulation
Jahrestagung Deutsche Gesellschaft für Medizinische Physik, 2008.
Special Issue on Point-Based Graphics
Computers & Graphics 32(2), 2008.
Geometric Modeling Based on Polygonal Meshes
Eurographics 2008 Course Notes
[Code] (compiles on Linux (gcc 4.1), Mac (Xcode 3), Windows (VC 2005))
2007
GPU Splatting
Chapter in Point Based Graphics, Markus Gross, Hanspeter Pfister (Editors)
Elsevier / Morgan Kaufmann, ISBN 0123706041, 2007.
Elsevier / Morgan Kaufmann, ISBN 0123706041, 2007.
Proceedings of Eurographics Symp. on Point-Based Graphics 2007
Eurographics Association, 2007.
Special Issue on Point-Based and Volume Graphics
Computers & Graphics 31(2), 2007.
Geometric Modeling Based on Polygonal Meshes
SIGGRAPH 2007 Course Notes (Best Course Notes Award)
[Code](compiles on Linux (gcc4.0), Mac (Xcode 2.5), Windows (VC 2003))
2006
High Quality Surface Generation and Efficient Multiresolution Editing Based on Triangle Meshes
GI-Edition Lecture Notes in Informatics (LNI), D-6, "Ausgezeichnete Informatikdissertationen 2005", 2006.
Proceedings of Eurographics Symp. on Point-Based Graphics 2006
Eurographics Association, 2006.
2005
Efficient Linear System Solvers for Mesh Processing
IMA Mathematics of Surfaces XI, Lecture Notes in Computer Science, Vol 3604, 2005, pp. 62-83.
High Quality Surface Generation and Efficient Multiresolution Editing Based on Triangle Meshes
PhD Thesis, RWTH Aachen
Shaker Verlag Aachen, ISBN 3-8322-4314-3, 2005.
Shaker Verlag Aachen, ISBN 3-8322-4314-3, 2005.
2004
A Survey of Point-Based Techniques in Computer Graphics
Computers & Graphics, Vol. 28, No. 6, pp. 801-814 (Best Paper Award).
Freeform Shape Representations for Efficient Geometry Processing
Shape Modeling International 2004
2003
Freeform Shape Representations for Efficient Geometry Processing
Shape Modeling International 2003, pp. 111-118.
2002
Efficient high quality rendering of point sampled geometry
Eurographics Workshop on Rendering 2002, pp. 53-64.
2001
Resampling Feature and Blend Regions in Polygonal Meshes for Surface Anti-Aliasing
Computer Graphics Forum 20(3), Proc. Eurographics 2001, pp. 402-410.
A Robust Procedure to Eliminate Degenerate Faces from Triangle Meshes
Vision, Modeling & Visualization 2001, pp. 283-289.
2000
Feature Sensitive Sampling for Interactive Remeshing
Vision, Modelling & Visualization 2000, pp. 129-136.