Dr. Denis Kalkofen is an Associate Professor at the College of Science and Engineering, Flinders University, Australia, and at the Institute of Computer Graphics and Vision (ICG), Graz University of Technology, Austria. His research is focused on developing visualization, interaction, authoring and display technology for Virtual and Mixed Reality environments. He is especially interested in combining computer graphics, human-computer interaction and computer vision techniques to enable comprehensible and easily accessible Mixed Reality experiences. Denis received Dipl.-Ing. (2004) from the University of Magdeburg and Dr. techn. (2009) and Habilitation (2022) from Graz University of Technology. Before joining ICG, he was a member of the Virtual Reality Laboratory at the University of Michigan. In 2019, he joined the University of South Australia as Visiting Researcher and the Computational Imaging Laboratory at Stanford University as Visiting Assistant Professor. Denis won best paper, best short paper, and honorable mention awards at several international scientific events, including IEEE ISMAR, 3DUI, EuroVis, KELVAR, BioVis, VRCAI, and IEEE Virtual Reality.

Research Projects & Selected Publications

3D Mixed Reality Displays

Video See-Through Mixed Reality with Focus Cues

Christoph Ebner, Shohei Mori, Peter Mohr, Yifan Peng, Dieter Schmalstieg, Gordon Wetzstein and Denis Kalkofen.
IEEE Transactions on Visualization and Computer Graphics (TVCG), Special Issue IEEE Virtual Reality (VR), 2022.

Off-Axis Layered Displays: Hybrid Direct-View/Near-Eye Mixed Reality with Focus Cues

Christoph Ebner, Peter Mohr, Tobias Langlotz, Yifan Peng, Dieter Schmalstieg, Gordon Wetzstein and Denis Kalkofen.
IEEE Transactions on Visualization and Computer Graphics (TVCG), Special Issue IEEE Virtual Reality (VR), 2023.


Coherent Neural Rendering

Neural Cameras: Learning Camera Characteristics for Coherent Mixed Reality Rendering

David Mandl, Peter Mohr, Tobias Langlotz, Christoph Ebner, Shohei Mori, Stefanie Zollmann, Peter M. Roth and Denis Kalkofen.
Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), 2021.

Learning Lightprobes for Mixed Reality Illumination

David Mandl, Kwang Moo Yi, Peter Mohr, Peter M. Roth, Pascal Fua, Vincent Lepetit, Dieter Schmalstieg, Denis Kalkofen.
Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), 2017.


Mixed Reality in Education

Tools for Teaching Mining Students in Virtual Reality based on 360° Video Experiences

Denis Kalkofen, Shohei Mori, Tobias Ladinig, Lea Daling, Anas Abdelrazeq, Markus Ebner, Manuel Ortega, Susanne Feiel, Sebastian Gabl, Taras Shepel, James Tibbett, Michael Hitch, Carsten Drebenstedt and Peter Moser.
IEEE Virtual Reality and 3D User Interfaces - Abstracts and Workshops (VRW), 2020.


Mixed Reality Tutorials

AR Hero: Generating Interactive Augmented Reality Guitar Tutorials

Lucchas Ribeiro Skreinig, Ana Stanescu, Shohei Mori, Frank Heyen, Peter Mohr, Michael Sedlmair, Dieter Schmalstieg and Denis Kalkofen.
IEEE Virtual Reality and 3D User Interfaces - Abstracts and Workshops (VRW), 2022.

Video-Annotated Augmented Reality Assembly Tutorials

Masahiro Yamaguchi, Shohei Mori, Peter Mohr, Markus Tatzgern, Ana Stanescu, Hideo Saito and Denis Kalkofen.
Proceedings of ACM Symposium on User Interface Software and Technology (UIST), 2020.


Retargeting Video Tutorials Showing Tools With Surface Contact to Augmented Reality

Peter Mohr, David Mandl, Markus Tatzgern, Eduardo E. Veas, Dieter Schmalstieg, Denis Kalkofen.
Proceedings of ACM Conference on Human Factors in Computing Systems (CHI), 2017.

Retargeting Technical Documentation to Augmented Reality

Peter Mohr, Bernhard Kerbl, Michael Donoser, Dieter Schmalstieg and Denis Kalkofen.
Proceedings of ACM Conference on Human Factors in Computing Systems (CHI), 2015.


Image Based Mixed Reality

Mixed Reality Light Fields for Interactive Remote Assistance

Peter Mohr, Shohei Mori, Tobias Langlotz, Bruce H. Thomas, Dieter Schmalstieg and Denis Kalkofen.
Proceedings of ACM Conference on Human Factors in Computing Systems (CHI), 2020.


Spatial Interaction

TrackCap: Enabling Smartphones for 3D Interaction on Mobile Head-Mounted Displays

Peter Mohr, Markus Tatzgern, Tobias Langlotz, Andreas Lang, Dieter Schmalstieg and Denis Kalkofen.
Proceedings of ACM Conference on Human Factors in Computing Systems (CHI), 2019.


Adaptive User Perspective Rendering for Handheld Augmented Reality

Peter Mohr, Markus Tatzgern, Jens Grubert, Dieter Schmalstieg and Denis Kalkofen.
IEEE Symposium on 3D User Interfaces (3DUI), 2017.


Transitional Augmented Reality Navigation for Live Captured Scenes

Markus Tatzgern, Raphael Grasset, Denis Kalkofen and Dieter Schmalstieg.
Proceedings of IEEE Virtual Reality (VR), 2014.


Human-Robot Interaction

Drone-Augmented Human Vision: Exocentric Control for Drones Exploring Hidden Areas

Okan Erat, Werner Alexander Isop, Denis Kalkofen and Dieter Schmalstieg.
IEEE Transactions on Visualization and Computer Graphics (TVCG), 2018.


Diminished Reality

InpaintFusion: Incremental RGB-D Inpainting for 3D Scenes

Shohei Mori, Okan Erat, Wolfgang Broll, Hideo Saito, Dieter Schmalstieg and Denis Kalkofen.
IEEE Transactions on Visualization and Computer Graphics (TVCG), 2020.

Good Keyframes to Inpaint

Shohei Mori, Dieter Schmalstieg and Denis Kalkofen.
IEEE Transactions on Visualization and Computer Graphics (TVCG), 2022.



Illustrative Visualization

Dynamic Label Placement for Forensic Case Visualization

Christof Sirk, Denis Kalkofen, Dieter Schmalstieg and Alexander Bornik.
EuroVis - Short Papers, 2017.

Hedgehog Labeling: View Management Techniques for External Labels in 3D Space

Markus Tatzgern, Denis Kalkofen, Raphael Grasset and Dieter Schmalstieg.
Proceedings of IEEE Virtual Reality (VR), 2014.

Comprehensible Visualization for Augmented Reality

Denis Kalkofen, Erick Mendez and Dieter Schmalstieg.
IEEE Transactions on Visualization and Computer Graphics (TVCG), 2009.

Explosion Diagrams in Augmented Reality

Denis Kalkofen, Markus Tatzgern and Dieter Schmalstieg.
Proceedings of IEEE Virtual Reality (VR), 2009.

Interactive Focus and Context Visualization for Augmented Reality

Denis Kalkofen, Erick Mendez and Dieter Schmalstieg.
Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), 2007.


Data Visualization

Entourage: Visualizing Relationships between Biological Pathways using Contextual Subsets

Alexander Lex, Christian Partl, Denis Kalkofen, Marc Streit, Anne Mai Wassermann, Samuel Gratzl, Dieter Schmalstieg, Hanspeter Pfister.
IEEE Transactions on Visualization and Computer Graphics (TVCG), 2013.

enRoute: Dynamic Path Extraction from Biological Pathway Maps for In-Depth Experimental Data Analysis

Christian Partl, Alexander Lex, Marc Streit, Denis Kalkofen, Karl Kashofer, Dieter Schmalstieg.
Proceedings of the IEEE Symposium on Biological Data Visualization (BioVis), 2012.

Awards

Best Journal Paper at IEEE ISMAR (ISMAR), 2023
Multi-layer Scene Representation from Composed Focal Stacks.
Best Journal Paper at IEEE Virtual Reality (VR), 2022
Video See-Through Mixed Reality with Focus Cues.
Best Conference Paper at IEEE International Symposium on Mixed and Augmented Reality (ISMAR), 2021
Neural Cameras: Learning Camera Characteristics for Coherent Mixed Reality Rendering.
Best Paper at K-12+ Embodied Learning through Virtual and Augmented Reality (KELVAR), Workshop at IEEE VR, 2020
Tools for Teaching Mining Students in Virtual Reality based on 360 Video Experiences.
Best Short Paper at VRCAI, 2018
TutAR: Augmented Reality Tutorials for Hands-only Procedures.
Best Short Paper Award at EuroVis, 2017
Dynamic Label Placement for Forensic Case Visualization.
Honorable Mention for Best Paper Award at IEEE International Symposium on 3D User Interfaces (3DUI), 2017
Adaptive User-Perspective Rendering.
Best Paper Award at IEEE BioVis, 2012
enRoute: Dynamic Path Extraction from Biological Pathway Maps for In-Depth Experimental Data Analysis.
Recognized Inventor at Graz University of Technology, 2011, 2013, 2015, and 2017
Best Student Paper Award at the 6th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), 2007
Interactive Focus and Context Visualization for Augmented Reality.
Computerworld Honors, 2003
Computerworld Smithsonian Awards in Education and Academia, 2000