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    Dr. Denis Kalkofen is an Associate Professor at the Institute of Visual Computing, 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.

    Publications

    Gaze-Contingent Layered Optical See-Through Displays with a Confidence-Driven View Volume

    Christoph Ebner, Alexander Plopski, Dieter Schmalstieg and Denis Kalkofen.
    IEEE Transactions on Visualization and Computer Graphics (TVCG), Special Issue IEEE International Symposium on Mixed and Augmented Reality (ISMAR), vol.30, no. 11, pp.7203-7213, 2024.

    doi | web

    Error Management for Augmented Reality Assembly Instructions

    Ana Stanescu, Peter Mohr, Franz Thaler, Mateusz Kozinski, Lucchas Ribeiro Skreinig, Dieter Schmalstieg and Denis Kalkofen.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.to appear, 2024.

    video | web

    XR Prototyping of Mixed Reality Visualizations: Compensating Interaction Latency for a Medical Imaging Robot

    Jan Hendrik Plümer, Kevin Yu, Ulrich Eck, Denis Kalkofen, Philipp Steininger, Nassir Navab and Denis Kalkofen.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.to appear, 2024.

    Honorable Mention for Best Student Paper Award

    Immersive Authoring by Demonstration of Industrial Procedures

    Lucchas Ribeiro Skreinig, Peter Mohr, Blanca Berger, Markus Tatzgern, Dieter Schmalstieg and Denis Kalkofen.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.to appear, 2024.

    video | web

    Neural Bokeh: Learning Lens Blur for Out-of-Focus Mixed Reality

    David Mandl, Shohei Mori, Peter Mohr, Yifan Peng, Tobias Langlotz, Dieter Schmalstieg and Denis Kalkofen.
    Proceedings of IEEE Virtual Reality (VR), pp.870-880, 2024.

    doi | video | web

    Progress Observation in Augmented Reality Assembly Tutorials Using Dynamic Hand Gesture Recognition

    Tania Kaimel, Ana Stanecsu, Peter Mohr, Dieter Schmalstieg and Denis Kalkofen.
    Proceedings of IEEE Virtual Reality and 3D User Interfaces - Abstracts and Workshops, pp.957-958.

    doi | video | web

    DeepDR: Deep Structure-Aware RGB-D Inpainting for Diminished Reality

    Christina Schwarz-Gsaxner, Shohei Mori, Dieter Schmalstieg, Janand Paar Egger, Werner Bailer and Denis Kalkofen.
    Proceedings of the International Conference on 3D Vision (3DV), pp.750-760, 2024.

    doi | video | web

    State-Aware Configuration Detection for Augmented Reality Step-by-Step Tutorials

    Ana Stanescu, Peter Mohr, Mateusz Kozinski, Shohei Mori, Dieter Schmalstieg and Denis Kalkofen.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.157-166, 2023.

    doi | web

    Exemplar-Based Inpainting for 6DOF Virtual Reality Photos

    Shohei Mori, Dieter Schmalstieg and Denis Kalkofen.
    IEEE Transactions on Visualization and Computer Graphics (TVCG), Special Issue IEEE International Symposium on Mixed and Augmented Reality (ISMAR), vol.29, no. 11, pp.4644-4654, 2023.

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    Multi-layer Scene Representation from Composed Focal Stacks

    Reina Ishikawa, Hideo Saito, Denis Kalkofen and Shohei Mori.
    IEEE Transactions on Visualization and Computer Graphics (TVCG), Special Issue IEEE International Symposium on Mixed and Augmented Reality (ISMAR), vol.29, no. 11, pp.4719-4729, 2023.

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    Best Journal Paper Award

    guitARhero: Interactive Augmented Reality Guitar Tutorials

    Lucchas Ribeiro Skreinig, Denis Kalkofen, Ana Stanescu, Peter Mohr, Frank Heyen, Shohei Mori, Michael Sedlmair, Dieter Schmalstieg and Alexander Plopski.
    IEEE Transactions on Visualization and Computer Graphics (TVCG), Special Issue IEEE International Symposium on Mixed and Augmented Reality (ISMAR), vol.29, no. 11, pp.4676-4685, 2023.

    doi | web

    Towards Neuroadaptive Augmented Reality Piano Tutorials

    Florian Maitz, Skreinig Ribeiro, Denis Kalkofen and Selina Wriesnegger.
    IEEE MetroxRAINE, pp.450-455, 2023.

    doi

    Impact of Robot Related User Pre-experience on Cognitive Load, Trust, Trustworthiness and Satisfaction with VR Interfaces

    Laurent and Koenczoel Frering.
    Advances in Service and Industrial Robotics, pp.123--131, 2023.

    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), vol.29, no. 5, pp.2816--2825, 2023.

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    Eye-Perspective View Management for Optical See-Through Head-Mounted Displays

    Gerlinde Emsenhuber, Tobias Langlotz, Denis Kalkofen, Jonathan Sutton and Markus Tatzgern.
    Proceedings of ACM Conference on Human Factors in Computing Systems (CHI), 2023.

    doi

    Model-free Authoring of Assembly Tutorials in Augmented Reality

    Ana Stanescu, Peter Mohr, Dieter Schmalstieg and Denis Kalkofen.
    IEEE Transactions on Visualization and Computer Graphics (TVCG), Special Issue IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.1-11, 2022.

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    Good Keyframes to Inpaint

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

    doi | pdf | video | web

    Video See-Through Mixed Reality with Focus Cues

    Christoph Ebner, Shohei Mori, Peter Mohr, Yifan Peng, Dieter Schmalstieg, Gordon Wetzstein and \textbfDenis Kalkofen.
    IEEE Transactions on Visualization and Computer Graphics (TVCG), Special Issue IEEE Virtual Reality (VR), vol.28, no. 5, pp.2256-2266, 2022.

    doi | pdf | video | web
    Best Journal Paper Award

    Towards Eye-Perspective Rendering for Optical See-Through Head-Mounted Displays

    Gerlinde Emsenhuber, Michael Domhardt, Tobias Langlotz, Denis Kalkofen and Markus Tatzgern.
    IEEE Virtual Reality and 3D User Interfaces - Abstracts and Workshops (VRW), pp.640-641, 2022.

    doi

    Enabling and Assessing Trust when Cooperating with Robots in Disaster Response

    Laurent Frering, Matthias Eder, Bettina Kubicek, Dietrich Albert, Denis Kalkofen, Thomas Gschwandtner, Heimo Krajnz, Gerald Steinbauer-Wagner.
    Shared Autonomy in Physical Human-Robot Interaction: Adaptability and Trust, Workshop at ICRA'22, 2022.

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    Stabilization of Spherical Videos based on Feature Uncertainty

    Alessandro Luchetti, Matteo Zanetti, Denis Kalkofen, Mariolino De Cecco.
    The Visual Computer, 2023.

    doi

    Evaluation of Mixed Reality Technologies in Remote Teaching

    Lea M. and Khoadei Daling.
    Learning and Collaboration Technologies. Novel Technological Environments, pp.24--37, 2022.

    Object Pose Detection to Enable 3D Interaction from 2D Equirectangular Images in Mixed Reality Educational Settings

    Matteo Zanetti , Alessandro Luchetti, Sharad Maheshwari, Denis Kalkofen, Manuel Labrador Ortega, Mariolino De Cecco.
    Applied Sciences, vol.12, no. 11, 2022.

    doi

    Omnidirectional Camera Pose Estimation and Projective Texture Mapping for Photorealistic 3D Virtual Reality Experiences

    Alessandro Luchetti, Matteo Zanetti , Denis Kalkofen, Mariolino De Cecco.
    ACTA IMEKO, vol.11, no. 2, 2022.

    doi

    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), pp.395--401, 2022.

    doi | pdf | video | web

    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), pp.508-516, 2021.

    doi | pdf | video | web
    Best Conference Paper Award

    Visualization and Graphics in Mixed Reality

    Denis Kalkofen, Shohei Mori and Markus Tatzgern.
    Eurographics - Tutorials, 2021.

    doi

    Designing for Mixed Reality Urban Exploration

    Salvatore Andolina, Hsieh Yi Ta, Denis Kalkofen, Antti Nurminen, Diogo Cabral, Anna Spagnolli, Luciano Gamberini, Ann Morrison, Dieter Schmalstieg and Giulio Jacucci.
    Interaction Design & Architecture (ID&A), vol.48, pp.33--49, 2021.

    doi

    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), pp.455-459, 2020.

    doi
    Best Paper Award

    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), vol.26, no. 10, pp.2994-3007, 2020.

    doi | pdf | video | web

    Perspective Matters: Design Implications for Motion Guidance in Mixed Reality

    Xingyao Yu, Katrin Angerbauer, Peter Mohr, Denis Kalkofen and Michael Sedlmair.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.577-587, 2020.

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    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), pp.1010-1022, 2020.

    doi | pdf | video | web

    Mixed Reality Light Fields for Interactive Remote Assistance

    Peter Mohr, Shohei Mori, Tobias Langlotz, Bruce H. Thomas, Dieter Schmalstieg and \textbfDenis \textbfKalkofen.
    Proceedings of ACM Conference on Human Factors in Computing Systems (CHI), pp.1-12, 2020.

    doi | pdf | video | web

    Visualization-Guided Attention Direction in Dynamic Control Tasks

    Jason Orlosky, Chang Liu, Denis Kalkofen and Kiyoshi Kiyokawa.
    IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct), pp.372-373, 2019.

    doi

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

    Peter Mohr, Markus Tatzgern, Tobias Langlotz, Andreas Lang, Dieter Schmalstieg and \textbfDenis \textbfKalkofen.
    Proceedings of ACM Conference on Human Factors in Computing Systems (CHI), pp.1-11, 2019.

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    3D PixMix: Image Inpainting in 3D Environments

    Shohei Mori, Jan Herling, Wolfgang Broll, Norihiko Kawai, Hideo Saito, Dieter Schmalstieg and Denis Kalkofen.
    IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct), pp.1-2, 2018.

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    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), vol.24, no. 4, pp.1437-1446, 2018.

    doi

    TutAR: Augmented Reality Tutorials for Hands-Only Procedures

    Daniel Eckhoff, Christian Sandor, Christian Lins, Ulrich Eck, Denis Kalkofen and Andreas Hein.
    International Conference on Virtual-Reality Continuum and its Applications in Industry (VRCAI), pp.1-4, 2018.

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    Best Short Paper Award

    Combining Intelligent Recommendation and Mixed Reality in Itineraries for Urban Exploration

    Giulio Jacucci, Salvatore Andolina, Denis Kalkofen, Dieter Schmalstieg, Antti Nurminen, Anna Spagnolli, Luciano Gamberini and Tuukka Ruotsalo.
    International Series on Information Systems and Management in Creative eMedia, vol.2017, no. 2, pp.18-23, 2018.

    web

    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), pp.176-181, 2017.

    doi
    Honorable Mentioned for Best Paper Award

    Learning Lightprobes for Mixed Reality Illumination

    David Mandl, Kwang Moo Yi, Peter Mohr, Peter M. Roth, Pascal Fua, Vincent Lepetit, Dieter Schmalstieg, \textbfDenis Kalkofen.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.82-89, 2017.

    doi | pdf

    Dynamic Label Placement for Forensic Case Visualization

    Christof Sirk, Denis Kalkofen, Dieter Schmalstieg and Alexander Bornik.
    EuroVis - Short Papers, pp.1-5, 2017.

    doi | pdf
    Best Short Paper Award

    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), pp.6547--6558, 2017.

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    Temporal Coherence Strategies for Augmented Reality Labeling

    Jacob Boesen Madsen, Markus Tatzgern, Claus B. Madsen, Dieter Schmalstieg and Denis Kalkofen.
    IEEE Transactions on Visualization and Computer Graphics (TVCG), vol.22, no. 4, pp.1415-1423, 2016.

    doi

    Instant Mixed Reality Lighting from Casual Scanning

    Thomas Richter-Trummer, Denis Kalkofen, Jinwoo Park and Dieter Schmalstieg.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.27-36, 2016.

    doi

    Adaptive information density for augmented reality displays

    Markus Tatzgern, Valeria Orso, Denis Kalkofen, Giulio Jacucci, Luciano Gamberini and Dieter Schmalstieg.
    Proceedings of IEEE Virtual Reality (VR), pp.83-92, 2016.

    doi

    Design Guidelines for Generating Augmented Reality Instructions

    Cledja Rolim, Dieter Schmalstieg, Denis Kalkofen and Veronica Teichrieb.
    IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct), pp.120-123, 2015.

    doi

    Interactive Disassembly Planning for Complex Objects

    Bernhard Kerbl, Denis Kalkofen, Markus Steinberger and Dieter Schmalstieg.
    Computer Graphics Forum (CGF, vol.34, no. 2, pp.287--297, 2015.

    doi

    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), pp.3337--3346, 2015.

    doi

    Exploring Real World Points of Interest

    Markus Tatzgern, Raphael Grasset, Eduardo Veas, Denis Kalkofen, Hartmut Seichter and Dieter Schmalstieg.
    Pervasive Mobile Computing, vol.18, no. C, pp.55–70, 2015.

    doi

    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), pp.1-6, 2014.

    doi | pdf | video

    Transitional Augmented Reality Navigation for Live Captured Scenes

    Markus Tatzgern, Raphael Grasset, Denis Kalkofen and Dieter Schmalstieg.
    Proceedings of IEEE Virtual Reality (VR), pp.21-26, 2014.

    doi | pdf | video

    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), vol.19, no. 12, pp.2536--2545, 2013.

    doi | pdf | video

    enRoute: Dynamic Path Extraction from Biological Pathway Maps for Exploring Heterogeneous Experimental Datasets

    Christian Partl, Alexander Lex, Marc Streit, Denis Kalkofen, Karl Kashofer, Dieter Schmalstieg.
    BMC Bioinformatics, vol.14, no. 19, pp.S3, 2013.

    doi

    Adaptive Ghosted Views for Augmented Reality

    Denis Kalkofen, Eduardo E. Veas, Stefanie Zollmann, Markus Steinberger and Dieter Schmalstieg.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.1-9, 2013.

    Dynamic compact visualizations for augmented reality

    Markus Tatzgern, Denis Kalkofen and Dieter Schmalstieg.
    Proceedings of IEEE Virtual Reality (VR), pp.3-6, 2013.

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    Exploring Distant Objects with Augmented Reality

    Markus Tatzgern, Raphael Grasset, Eduardo Veas, Denis Kalkofen, Hartmut Seichter and Dieter Schmalstieg.
    Joint Virtual Reality Conference of EGVE - EuroVR, pp.1-11, 2013.

    doi | pdf | video

    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), pp.107--114, 2012.

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    Best Paper Award

    Image-Driven View Management for Augmented Reality Browsers

    Raphael Grasset, Markus Tatzgern, Tobias Langlotz, Denis Kalkofen and Dieter Schmalstieg.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.177-186, 2012.

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    OmniKinect: Real-Time Dense Volumetric Data Acquisition and Applications

    Bernhard Kainz, Stefan Hauswiesner, Gerhard Reitmayr, Markus Steinberger, Raphael Grasset, Lukas Gruber, Eduardo Veas, Denis Kalkofen, Hartmut Seichter and Dieter Schmalstieg.
    Proceedings of ACM Symp. on Virtual Reality Software and Technology (VRST), pp.25–32, 2012.

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    Ray Prioritization Using Stylization and Visual Saliency

    Markus Steinberger, Bernhard Kainz, Stefan Hauswiesner, Rostislav Khlebnikov, Denis Kalkofen and Dieter Schmalstieg.
    Computers & Graphics, vol.36, no. 6, pp.673--684, 2012.

    doi

    Frame Cache Management for Multi-frame Rate Systems

    Stefan and Grasmug Hauswiesner.
    Advances in Visual Computing, pp.285--294, 2012.

    doi

    Interactive 4D Overview and Detail Visualization in Augmented Reality

    Stefanie Zollmann, Denis Kalkofen, Christof Hoppe, Stefan Kluckner, Horst Bischof and Gerhard Reitmayr.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.167-176, 2012.

    doi

    Using perceptual features to prioritize ray-based image generation

    B. Kainz, M. Steinberger, S. Hauswiesner, R. Khlebnikov, D. Kalkofen and D. Schmalstieg.
    Symposium on Interactive 3D Graphics and Games, pp.215--215, 2011.

    doi

    Visualization Techniques for Augmented Reality

    \textbfDenis Kalkofen, Christian Sandor, Sean White, Dieter Schmalstieg.
    Handbook of Augmented Reality Technologies and Applications, pp.65--99, 2011.

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    Multi-perspective compact explosion diagrams

    Markus Tatzgern, Denis Kalkofen and Dieter Schmalstieg.
    Computers & Graphics, vol.35, no. 1, pp.135 - 147, 2011.

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    Embedded Virtual Views for Augmented Reality Navigation

    Markus Tatzgern, Denis Kalkofen, Raphael Grasset and Dieter Schmalstieg.
    Workshop on Visualization in Mixed Reality Environments, International Symposium on Mixed and Augmented Reality (ISMAR), 2011.

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    Augmented Reality for Minimally Invasive Surgery: Overview and Some Recent Advances

    Pablo Lamata, Wajid Ali, Alicia Cano, Jordi Cornella, Jerome Declerck, Ole J. Elle, Adinda Freudenthal, Hugo Furtado, Denis Kalkofen, Edvard Naerum, Eigil Samset, Patricia Sánchez-Gonzalez, Francisco M. Sánchez-Margallo, Dieter Schmalstieg, Mauro Sette, Thomas Stüdeli, Jos Vander Sloten, Enrique J. Gómez.
    Augmented Reality, 2010.

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    Image-based Ghostings for Single Layer Occlusions in Augmented Reality

    Stefanie Zollmann, Denis Kalkofen, Erick Mendez and Gerhard Reitmayr.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.19--26, 2010.

    doi

    Compact Explosion Diagrams

    Markus Tatzgern, Denis Kalkofen and Dieter Schmalstieg.
    Proceedings of the International Symposium on Non-Photorealistic Animation and Rendering, pp.17--26, 2010.

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    Multi-Frame Rate Volume Rendering

    Stefan Hauswiesner, Denis Kalkofen and Dieter Schmalstieg.
    EGPGV, pp.19-26, 2010.

    doi

    Color Harmonization for Augmented Reality

    Lukas Gruber, Denis Kalkofen and Dieter Schmalstieg.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.227-228, 2010.

    doi

    Comprehensible Visualization for Augmented Reality

    Denis Kalkofen, Erick Mendez and Dieter Schmalstieg.
    IEEE Transactions on Visualization and Computer Graphics (TVCG), vol.15, no. 2, pp.193--204, 2009.

    doi

    Explosion Diagrams in Augmented Reality

    Denis Kalkofen, Markus Tatzgern and Dieter Schmalstieg.
    Proceedings of IEEE Virtual Reality (VR), pp.71-78, 2009.

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    Adaptive Visualization in Outdoor AR Displays

    Denis Kalkofen, Stefanie Zollmann, Gerhard Schall, Gerhard Reitmayr and Dieter Schmalstieg.
    Going Out Workshop at IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.1-3, 2009.

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    Visualization tool for improved accuracy in needle placement during percutaneous radio-frequency ablation of liver tumors

    Thomas Stüdeli, Denis Kalkofen, Petter Risholm, Wajid Ali, Adinda Freudenthal and Eigil Samset.
    Proceedings of Medical Imaging: Visualization, Image-Guided Procedures, and Modeling (SPIE), 2008.

    doi

    How do Interventionists navigate to the tumour

    Thomas Stüdeli, Denis Kalkofen and Adinda Freudenthal.
    Proceedings of the Nordic Ergonomics Society, pp.100--107, 2007.

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    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), pp.191-200, 2007.

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    Best Student Paper Award

    Integrated Medical Workflow for Augmented Reality Applications

    Denis Kalkofen, B. Reitinger, Petter Risholm, A. Bornik, R. Beichel, D. Schmalstieg and E. Samset.
    Proceedings of the MICCAI Workshop on Augmented environments for Medical Imaging and Computer-aided Surgery (AMI-ARCS), 2006.

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    Interactive Context-Driven Visualization Tools for Augmented Reality

    Erick Mendez, Denis Kalkofen and Dieter Schmalstieg.
    Proceedings of IEEE International Symposium on Mixed and Augmented Reality (ISMAR), pp.191-200, 2006.

    doi | pdf

    Patents

    Image processing method, mobile device and method for generating a video image database

    Clemens Arth, Philip Fleck, Denis Kalkofen, Peter Mohr and Dieter Schmalstieg
    US Patent 10,163,224, 2018
    Method for creating three-dimensional documentation
    Gerald Stieglbauer, Peter Mohr, Bernhard Kerbl, Denis Kalkofen, Michael Donoser and Dieter Schmalstieg
    US Patent App. 15/513,057, 2017

    Adaptive resolution in optical flow computations for an image processing system

    Philipp Grasmug, Dieter Schmalstieg, Stefan Hauswiesner and Denis Kalkofen
    US Patent App. 14/658,108 4, 2015
    Hierarchical clustering for view management augmented reality
    Markus Tatzgern, Denis Kalkofen, Dieter Schmalstieg and Raphael Grasset
    US Patent App. 14/640,981 27, 2015
    Image-driven view management for annotations
    Raphael Grasset, Markus Tatzgern, Tobias Langlotz, Denis Kalkofen and Dieter Schmalstieg
    US Patent 9,147,221 36, 2015
    Efficient information presentation for augmented reality.
    Markus Tatzgern, Denis Kalkofen and Dieter Schmalstieg
    US Patent App. 13/225,302 42, 2012
    Method, system and computer program product for automatically creating an animated 3-D scenario from human position and path data.
    Klaus Peter Beier, Denis Kalkofen, Lubomira A Dontcheva, Lars Schumann and Lars Bjorn Jensen
    US Patent, Publication number 20030227453, 2003