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% Creation date: 2025-05-04
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@Article { DiscreteRotationWolf,
    author = {Wolf, Dennis and Rietzler, Michael and Bottner, Laura and Rukzio, Enrico},
    title = {Augmenting Teleportation in Virtual Reality With Discrete Rotation Angles},
    abstract = {Locomotion is one of the most essential interaction tasks in virtual reality
(VR) with teleportation being widely accepted as the state-of-the-art locomotion technique at the time of this writing. A major draw-back of teleportation is the accompanying physical rotation that is necessary to adjust the users' orientation either before or after teleportation. This is a limiting factor for tethered head-mounted displays (HMDs) and static body postures and can induce additional simulator sickness for HMDs with three degrees-of-freedom
(DOF) due to missing parallax cues. To avoid physical rotation, previous work proposed discrete rotation at fixed intervals (InPlace) as a controller-based technique with low simulator sickness, yet the impact of varying intervals on spatial disorientation, user presence and performance remains to be explored.
An unevaluated technique found in commercial VR games is reorientation during the teleportation process (TeleTurn), which prevents physical rotation but potentially increases interaction time due to its continuous orientation selection. In an exploratory user study, where participants were free to apply both techniques, we evaluated the impact of rotation parameters of either technique on user performance and preference. Our results indicate that discrete InPlace rotation introduced no significant spatial disorientation, while user presence scores were increased. Discrete TeleTurn and teleportation without rotation was ranked higher and achieved a higher presence score than continuous TeleTurn, which is the current state-of-the-art found in VR games.
Based on observations, that participants avoided TeleTurn rotation when discrete InPlace rotation was available, we distilled guidelines for designing teleportation without physical rotation.},
    year = {2021},
    month = {6},
    day = {08},
    howpublished = {Arxiv.org},
    file_url = {http://arxiv.org/abs/2106.04257}
}

@Article { 654278610269_2021,
    author = {Karaosmanoglu, Shyukryan and Rogers, Katja and Wolf, Dennis and Rukzio, Enrico and Nacke, Lennart E.},
    title = {Feels Like Team Spirit: Biometric and Strategic Interdependence in Asymmetric Multiplayer VR Games},
    year = {2021},
    month = {5},
    reviewed = {1},
    DOI = {10.1145/3411764.3445492},
    journal = {In Proc. of CHI 2021 (SIGCHI Conference on Human Factors in Computing Systems)},
    publisher = {ACM},
    web_url2 = {https://youtu.be/YMkVznNuxxE},
    file_url = {t3://file?uid=444330}
}

@Article { 784382030213_2021,
    author = {Colley, Mark and Wolf, Dennis and B\"{o}hm, Sabrina and Lahmann, Tobias and Porta, Luca and Rukzio, Enrico},
    title = {Resync: Towards Transferring Somnolent Passengers to Consciousness},
    status = {1},
    year = {2021},
    DOI = {10.1145/3447527.3474847},
    journal = {23rd International Conference on Mobile Human-Computer Interaction Adjunct Proceedings},
    web_url2 = {https://youtu.be/1yH9XFIHz34},
    file_url = {t3://file?uid=464061}
}

@Poster { graphical_markers_wolf,
    author = {Colley, Ashley and Wolf, Dennis and Kammerer, Klaus and Rukzio, Enrico and H\"{a}kkila, Jonna},
    title = {Exploring the Performance of Graphically Designed AR Markers},
    abstract = {The design of graphical augmented reality (AR) markers requires compromise between the aesthetic appearance and tracking reliability. To investigate the topic, we created a virtual reality (VR) pipeline to evaluate marker performance, and validated it against real-world performance for a set of graphical AR markers. We report that, with the well known Vuforia framework and typical smart-phone hardware, well designed 20×20 cm markers can be tracked at distances of up to 68 cm. We note that the number of feature points is particularly important to a marker's angular performance.},
    year = {2020},
    month = {11},
    day = {23},
    reviewed = {1},
    DOI = {10.1145/3428361.3432076},
    booktitle = {19th International Conference on Mobile and Ubiquitous Multimedia},
    publisher = {ACM},
    series = {MUM 2020},
    pages = {317–319},
    file_url = {t3://file?uid=432458}
}

@Article { JumpVR,
    author = {Wolf, Dennis and Rogers, Katja and Kunder, Christoph and Rukzio, Enrico},
    title = {JumpVR: Jump-Based Locomotion Augmentation for Virtual Reality},
    year = {2020},
    month = {4},
    reviewed = {1},
    DOI = {10.1145/3313831.3376243},
    journal = {In Proc. of CHI 2020 (SIGCHI Conference on Human Factors in Computing Systems)},
    volume = {ACM},
    web_url2 = {https://youtu.be/cWBxh3I5lHg},
    file_url = {t3://file?uid=422939}
}

@Article { Heisenberg,
    author = {Wolf, Dennis and Gugenheimer, Jan and Combosch, Marco and Rukzio, Enrico},
    title = {Understanding the Heisenberg Effect of Spatial Interaction: A Selection Induced Error for Spatially Tracked Input Devices},
    year = {2020},
    month = {4},
    reviewed = {1},
    DOI = {10.1145/3313831.3376876},
    journal = {In Proc. of CHI 2020 (SIGCHI Conference on Human Factors in Computing Systems)},
    publisher = {ACM},
    web_url2 = {https://youtu.be/HwDPTof3BUo},
    file_url = {t3://file?uid=422938}
}

@Article { cARe_Demo,
    author = {Wolf, Dennis and Besserer, Daniel and Sejunaite, Karolina and Schuler, Anja and Riepe, Matthias and Rukzio, Enrico},
    title = {A Demonstration of cARe: An Augmented Reality Support System for Geriatric Inpatients with Mild Cognitive Impairment},
    year = {2019},
    month = {11},
    DOI = {10.1145/3365610.3368472},
    journal = {In Adj. Proc. of MUM19 (18th International Conference on Mobile and Ubiquitous Multimedia)},
    publisher = {ACM},
    web_url2 = {/index.php?id=100473},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/Papers/Prof\_Rukzio/2019/a58-wolf.pdf}
}

@Article { cARe_MUM,
    author = {Wolf, Dennis and Besserer, Daniel and Sejunaite, Karolina and Schuler, Anja and Riepe, Matthias and Rukzio, Enrico},
    title = {cARe: An Augmented Reality Support System for Geriatric Inpatients with Mild Cognitive Impairment},
    year = {2019},
    month = {11},
    DOI = {10.1145/3365610.3365612},
    journal = {In Proc. of MUM19 (18th International Conference on Mobile and Ubiquitous Multimedia)},
    publisher = {ACM},
    web_url2 = {/index.php?id=100473},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/Papers/Prof\_Rukzio/2019/a2-wolf.pdf}
}

@Article { EEG,
    author = {Wolf, Dennis and Wagner, Tobias and Rukzio, Enrico},
    title = {Low-Cost Real-Time Mental Load Adaptation for Augmented Reality Instructions - A Feasibility Study},
    year = {2019},
    month = {10},
    DOI = {10.1109/ISMAR-Adjunct.2019.00015},
    journal = {In Adj. Proc. of ISMAR 2019 (2019 IEEE International Symposium on Mixed and Augmented Reality)},
    publisher = {IEEE},
    file_url = {t3://file?uid=414589}
}

@Article { FaceOnIsmar,
    author = {Wolf, Dennis and Rietzler, Michael and Hnatek, Leo and Rukzio, Enrico},
    title = {Face/On: Multi-Modal Haptic Feedback for Head-Mounted Displays in Virtual Reality},
    year = {2019},
    month = {8},
    issn = {1077-2626},
    DOI = {10.1109/TVCG.2019.2932215},
    journal = {IEEE Transactions on Visualization and Computer Graphics (TVCG)},
    event_name = {ISMAR 2019},
    event_place = {Peking, China},
    web_url2 = {/index.php?id=98825},
    file_url = {t3://file?uid=439057}
}

@Article { cARe,
    author = {Wolf, Dennis and Besserer, Daniel and Sejunaite, Karolina and Riepe, Matthias and Rukzio, Enrico},
    title = {cARe: An Augmented Reality Support System for Dementia Patients},
    year = {2018},
    month = {10},
    DOI = {10.1145/3266037.3266095},
    journal = {In Adj. Proc. of UIST '18 (ACM Symposium on User Interface Software and Technology)},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/cARePosterAbstract.pdf}
}

@Article { FaceOn,
    author = {Wolf, Dennis and Hnatek, Leo and Rukzio, Enrico},
    title = {Face/On: Actuating the Facial Contact Area of a Head-Mounted Display for Increased Immersion},
    year = {2018},
    month = {10},
    DOI = {10.1145/3266037.3271631},
    journal = {In Adj. Proc. of UIST '18 (ACM Symposium on User Interface Software and Technology)},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/FaceOnNew.pdf}
}

@Article { PerformanceEnvelopes,
    author = {Wolf, Dennis and Dudley, John J and Kristensson, Per Ola},
    title = {Performance Envelopes of In-Air Direct and Smartwatch Indirect Control for Head-Mounted Augmented Reality},
    year = {2018},
    month = {3},
    DOI = {10.1109/VR.2018.8448289},
    journal = {Proceedings of IEEE VR 2018 (25th IEEE Conference on Virtual Reality and 3D User Interfaces)},
    web_url = {https://youtu.be/W1ytGdOZHpU},
    web_url2 = {/index.php?id=92485},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/IEEE\_VR\_2018\_Watch\_vs\_Hand\_in\_AR.pdf}
}

@Inbook { CompanionBookB5,
    author = {Gugenheimer, Jan and Winkler, Christian and Wolf, Dennis and Rukzio, Enrico},
    title = {Interaction with Adaptive and Ubiquitous User Interfaces},
    year = {2017},
    isbn = {978-3-319-43665-4},
    DOI = {10.1007/978-3-319-43665-4\_11},
    booktitle = {Companion Technology - A Paradigm Shift in Human-Technology Interaction},
    publisher = {Springer},
    chapter = {11},
    editor = {Biundo, Susanne, and Andreas Wendemuth},
    pages = {209-229},
    web_url2 = {/index.php?id=92261},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/CompanionBookB5Chapter.pdf}
}

@Article { GyroVR,
    author = {Gugenheimer, Jan and Wolf, Dennis and Eiriksson, Eythor and Maes, Pattie and Rukzio, Enrico},
    title = {GyroVR: Simulating Inertia in Virtual Reality using Head Worn Flywheels},
    year = {2016},
    month = {10},
    DOI = {10.1145/2984511.2984535},
    journal = {In Proceedings UIST 2016 (ACM Symposium on User Interface Software and Technology)},
    web_url = {https://youtu.be/RPWsaIYYI6g},
    web_url2 = {/index.php?id=85211},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/GyroVRPaper.pdf}
}

@Article { SwiVRDemo,
    author = {Gugenheimer, Jan and Wolf, Dennis and Haas, Gabriel and Krebs, Sebastian and Rukzio, Enrico},
    title = {A Demonstration of SwiVRChair: A Motorized Swivel Chair to Nudge Users’ Orientation for 360 Degree Storytelling in Virtual Reality},
    year = {2016},
    month = {9},
    DOI = {10.1145/2968219.2971363},
    journal = {In Adj. Proc. (Demo) of Ubicomp 2016 (ACM International Joint Conference on Pervasive and Ubiquitous Computing),},
    web_url = {/index.php?id=85224},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/Papers/Prof\_Rukzio/2016/SwiVRDemoUbiComp.pdf}
}

@Article { SwiVRchair,
    author = {Gugenheimer, Jan and Wolf, Dennis and Haas, Gabriel and Krebs, Sebastian and Rukzio, Enrico},
    title = {SwiVRChair: A Motorized Swivel Chair to Nudge Users' Orientation for 360 Degree Storytelling in Virtual Reality},
    year = {2016},
    month = {5},
    DOI = {10.1145/2858036.2858040},
    journal = {In Proc. of CHI 2016 (SIGCHI Conference on Human Factors in Computing Systems)},
    web_url = {https://youtu.be/qRSqbCHiMS4},
    web_url2 = {/index.php?id=85224},
    file_url = {http://www.uni-ulm.de/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/SwiVRChair.pdf}
}

@Article { SmarTVision,
    author = {Gugenheimer, Jan and Honold, Frank and Wolf, Dennis and Sch\"{u}ssel, Felix and Seifert, Julian and Weber, Michael and Rukzio, Enrico},
    title = {How Companion-Technology can Enhance a Multi-Screen Television Experience: A Test Bed for Adaptive Multimodal Interaction in Domestic Environments},
    year = {2016},
    month = {2},
    language = {English},
    DOI = {10.1007/s13218-015-0395-7},
    journal = {KI - K\"{u}nstliche Intelligenz},
    publisher = {Springer},
    address = {Berlin Heidelberg},
    web_url = {https://youtu.be/srODhHgU3LA},
    web_url2 = {/index.php?id=85227},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/rukzio/publications/GugenheimerCompanion2015.pdf}
}

@Article { ColorSnakes,
    author = {Gugenheimer, Jan and De Luca, Alexander and Hess, Hayato and Karg, Stefan and Wolf, Dennis and Rukzio, Enrico},
    title = {ColorSnakes: Using Colored Decoys to Secure Authentication in Sensitive Contexts},
    year = {2015},
    DOI = {10.1145/2785830.2785834},
    journal = {In Proc. of MobileHCI 2015 (17th International Conference on  Human-Computer Interaction with Mobile Devices and Services)},
    web_url = {https://youtu.be/hz1MYrhhj1Y},
    web_url2 = {/index.php?id=85228},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/ColorSnakes.pdf}
}

@Article { OctiCamPoster,
    author = {Wolf, Dennis and Gugenheimer, Jan and Rukzio, Enrico},
    title = {OctiCam: An immersive and mobile video communication device for parents and children},
    year = {2015},
    language = {English},
    DOI = {10.18725/OPARU-3252},
    journal = {Proc. of ISCT 2015 (1st International Symposium on Companion-Technology)},
    web_url = {http://vts.uni-ulm.de/doc.asp?id=9771},
    web_url2 = {/index.php?id=85226},
    file_url = {/fileadmin/website\_uni\_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/OctiCamISCT15.pdf}
}