Institute of Media Informatics

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(February 2023)

Dr. Gabriel Haas

Gabriel Haas
Dr. Gabriel Haas
Former Research Associate and PhD Candidate
        

Gabriel Haas, M.Sc.

Gabriel joined the HCI-Group of Ulm University in 2014 as a research assistent.
Between winter term 16/17 and November 2021 he worked there as a research associate.

He holds a Master of Science in Mediainformatics from University of Ulm and a Bachelor of Science from Ulm University of Applied Science.
He successfully defended his phd thesis of the title Towards Auditory Interaction: An Analysis of Computer-Based Auditory Interfaces in Three Settings in February 2023.

Research interests

  • Speech-based User Interfaces
  • Mobile Devices
  • Ubiquitous Computing

Teaching

  • Comparison of object detection methods in the context of an origami folding assistant application for AR glasses
  • Beyond Noise-Cancellation: Interacting With Auditory Mediated and Augmented Reality

Projects

FaceTouch

We present FaceTouch, a mobile Virtual Reality (VR) headmounted display (HMD) that leverages the backside as a touch-sensitive surface. FaceTouch allows the user to point at and select virtual content inside their field-of-view by touching the corresponding location at the backside of the HMD utilizing their sense of proprioception. This allows for a rich interaction (e.g. gestures) in mobile and nomadic scenarios without having to carry additional accessories (e.g. gamepad). We built a prototype of FaceTouch and present interaction techniques and three example applications that leverage the FaceTouch design space.

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SwiVRChair

Since 360 degree movies are a fairly new medium, creators are facing several challenges such as controlling the attention of a user. In traditional movies this is done by applying cuts and tracking shots which is not possible or advisable in VR since rotating the virtual scene in front of the user’s eyes will lead to simulator sickness. One of the reasons this effect occurs is when the physical movement (measured by the vestibular system) and the visual movement are not coherent.

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Glass Unlock

Glass Unlock is a novel concept using smart glasses for smartphone unlocking, which is theoretically secure against smudge attacks, shoulder-surfing, and camera attacks. By introducing an additional temporary secret like the layout of digits that is only shown on the private near-eye display, attackers cannot make sense of the observed input on the almost empty phone screen.

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Scientific Activities

  • Reviewed for: ACM MM'17, ACM AutoUI'17, ACM CHI'18, ACM DIS'18

Publications

2022

16.
G. Haas, M. Rietzler, M. Jones and E. Rukzio, "Keep it Short: A Comparison of Voice Assistants' Response Behavior", In Proc. of CHI 2022 (SIGCHI Conference on Human Factors in Computing Systems) (conditionally accepted), May 2022.
DOI:10.1145/3491102.3517684
Weblink:https://www.youtube.com/watch?v=6tOWyvrFdVo
File:/fileadmin/website_uni_ulm/iui.inst.100/1-hci/hci-paper/2022/CHI2022_Keep_it_short.pdf

2020

15.
G. Haas, J. Gugenheimer, J. O. Rixen, F. Schaub and E. Rukzio, "'They Like to Hear My Voice'': Exploring Usage Behavior in Speech-Based Mobile Instant Messaging", In Proc. of MobileHCI 2020 (International Conference on Human-Computer Interaction with Mobile Devices and Services), Oct. 2020. ACM.
DOI:https://doi.org/10.1145/3379503.3403561
File:/fileadmin/website_uni_ulm/iui.inst.100/1-hci/hci-paper/2020/MobileHCI2020_TheyLikeToHearMyVoice.pdf
14.
G. Haas, J. Gugenheimer and E. Rukzio, "VoiceMessage++: Exploring the Concept of Augmented Voice Messages", In Proc. of MobileHCI 2020 (International Conference on Human-Computer Interaction with Mobile Devices and Services), Oct. 2020. ACM.
DOI:https://doi.org/10.1145/3379503.3403560
File:/fileadmin/website_uni_ulm/iui.inst.100/1-hci/hci-paper/2020/VoiceMessage__-compressed.pdf
13.
G. Haas, E. Stemasov, M. Rietzler and E. Rukzio, "Interactive Auditory Mediated Reality: Towards User-defined Personal Soundscapes", In Proc. of DIS 2020 (ACM Conference on Designing Interactive Systems), Jul. 2020. ACM.
DOI:http://dx.doi.org/10.1145/3357236.3395493
File:/fileadmin/website_uni_ulm/iui.inst.100/1-hci/hci-paper/2020/DIS2020_IAMR_PrePrint-compressed.pdf

2019

12.
M. Rietzler, G. Haas, T. Dreja, F. Geiselhart and E. Rukzio, "Virtual Muscle Force: Communicating Kinesthetic Forces Through Pseudo-Haptic Feedback and Muscle Input", In Proc. of UIST 2019 (ACM Symposium on User Interface Software and Technology), Oct. 2019. ACM.
DOI:10.1145/3332165.3347871
Weblink:https://youtu.be/4pfR75jP3oE
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2019/uist19-rietzler_virtualMuscleForce.pdf
11.
S. Faltaous, G. Haas, L. Barrios, A. Seiderer, S. F. Rauh, H. J. Chae, S. Schneegass and F. Alt, "BrainShare: A Glimpse of Social Interaction for Locked-in Syndrome Patients", May 2019.
DOI:https://doi.org/10.1145/3290607.3312754
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2019/BrainShare.pdf

2018

10.
G. Haas, E. Stemasov and E. Rukzio, "Can’t You Hear Me? Investigating Personal Soundscape Curation", In Proc. of MUM 2018 (17th International Conference on Mobile and Ubiquitous Multimedia), Nov. 2018. ACM.
DOI:10.1145/3282894.3282897
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2018/Can_t_you_hear_me__MUM_2018.pdf
9.
E. Stemasov, G. Haas, M. Rietzler and E. Rukzio, "Augmenting Human Hearing Through Interactive Auditory Mediated Reality", In Adj. Proc. of UIST '18 (ACM Symposium on User Interface Software and Technology), Oct. 2018.
DOI:10.1145/3266037.3266104
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2018/AugmentedHearing_Poster_UIST2018.pdf

2017

8.
D. Dobbelstein, G. Haas and E. Rukzio, "The Effects of Mobility, Encumbrance, and (Non-)Dominant Hand on Interaction with Smartwatches", Proc. of ISWC 2017 (2017 ACM International Symposium on Wearable Computers), Sep. 2017.
DOI:10.1145/3123021.3123033
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/The_Effects_of_Encumbrance_Mobility_and_Hand_On_Smartwatch_Interaction.pdf
7.
D. Dobbelstein, C. Winkler, G. Haas and E. Rukzio, "PocketThumb: a Wearable Dual-Sided Touch Interface for Cursor-based Control of Smart-Eyewear", Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), Jun. 2017. https://www.uni-ulm.de/in/mi/mi-forschung/uulm-hci/projects/pocketthumb-a-wearable-dual-sided-touch-interface-for-cursor-based-control-of-smart-eyewear/.
DOI:10.1145/3090055
Weblink:https://youtu.be/Ep0GUToErJg
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/pocketThumb.pdf
6.
D. Dobbelstein, C. Winkler, G. Haas and E. Rukzio, "Demonstration of PocketThumb: a Wearable Dual-Sided Touch Interface for Cursor-based Control of Smart-Eyewear", Proc. of UbiComp/ISWC 2017 Adjunct (Demo), ACM, 4 pages, 2017. https://youtu.be/Ep0GUToErJg.
DOI:10.1145/3123024.3123185
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/pocketthumb_demo.pdf

2016

5.
J. Gugenheimer, D. Dobbelstein, C. Winkler, G. Haas and E. Rukzio, "FaceTouch: Enabling Touch Interaction in Display Fixed UIs for Mobile Virtual Reality", In Proceedings of UIST 2016 (ACM Symposium on User Interface Software and Technology), Oct. 2016. https://www.uni-ulm.de/en/in/mi/mi-forschung/research-group-rukzio/projects/facetouch-touch-interaction-for-mobile-virtual-reality/.
DOI:10.1145/2984511.2984576
Weblink:https://youtu.be/MHbN9lseHYE
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2016/p49c.pdf
4.
J. Gugenheimer, D. Wolf, G. Haas, S. Krebs and E. Rukzio, "A Demonstration of SwiVRChair: A Motorized Swivel Chair to Nudge Users’ Orientation for 360 Degree Storytelling in Virtual Reality", In Adj. Proc. (Demo) of Ubicomp 2016 (ACM International Joint Conference on Pervasive and Ubiquitous Computing),, Sep. 2016. https://www.uni-ulm.de/index.php?id=85224.
DOI:10.1145/2968219.2971363
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2016/SwiVRDemoUbiComp.pdf
3.
J. Gugenheimer, D. Dobbelstein, C. Winkler, G. Haas and E. Rukzio, "FaceTouch: Touch Interaction for Mobile Virtual Reality", In Adj. Proc. (Demo) of CHI 2016 (SIGCHI Conference on Human Factors in Computing Systems), May 2016. https://www.uni-ulm.de/en/in/mi/mi-forschung/research-group-rukzio/projects/facetouch-touch-interaction-for-mobile-virtual-reality/.
DOI:10.1145/2851581.2890242
Weblink:https://youtu.be/tvAjOvXB56c
File:pdfhttps://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2016/FaceTouchGugenheimer.pdf
2.
J. Gugenheimer, D. Wolf, G. Haas, S. Krebs and E. Rukzio, "SwiVRChair: A Motorized Swivel Chair to Nudge Users' Orientation for 360 Degree Storytelling in Virtual Reality", In Proc. of CHI 2016 (SIGCHI Conference on Human Factors in Computing Systems), May 2016. https://youtu.be/qRSqbCHiMS4.
DOI:10.1145/2858036.2858040
Weblink:https://www.uni-ulm.de/index.php?id=85224
File:pdfhttp://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/wolf/SwiVRChair.pdf

2015

1.
C. Winkler, J. Gugenheimer, A. De Luca, G. Haas, P. Speidel, D. Dobbelstein and E. Rukzio, "Glass Unlock: Enhancing Security of Smartphone Unlocking through Leveraging a Private Near-eye Display" in Proc. of CHI 2015 (SIGCHI Conference on Human Factors in Computing Systems), Apr. 2015.
DOI:10.1145/2702123.2702316
Weblink:https://www.youtube.com/watch?v=LqfbVckVUNs
File:pdfhttp://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2015/Glass_unlock_winkler.pdf
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