@inproceedings{corsten2017a,

title = {BackXPress: Using Back-of-Device Finger Pressure to Augment Touchscreen Input on Smartphones},

author = {Christian Corsten and Bjoern Daehlmann and Simon Voelker and Jan Borchers},

url = {http://doi.acm.org/10.1145/3025453.3025565},

doi = {10.1145/3025453.3025565},

year  = {2017},

date = {2017-05-01},

urldate = {2017-05-01},

booktitle = {Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems},

pages = {4654--4666},

publisher = {ACM},

address = {New York, NY, USA},

series = {CHI '17},

key = {back-of-device, pressure, bimanual input, smartphone},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{mci/Noichl2017b,

title = {Zielgruppengerechte App-Icons für Seniorinnen und Senioren},

author = {Svenja Noichl and Nadine Bergner and Ulrik Schroeder},

editor = {Christoph Igel and Carsten Ullrich and Wessner Martin},

url = {http://dl.gi.de/handle/20.500.12116/4832},

year  = {2017},

date = {2017-01-01},

urldate = {2017-01-01},

booktitle = {Bildungsr\"{a}ume 2017},

pages = {117-123},

publisher = {Gesellschaft f\"{u}r Informatik, Bonn},

abstract = {Immer mehr Seniorinnen und Senioren nutzen Smartphones und Tablets. Lern-Apps k\"{o}nnen Seniorinnen und Senioren beim Erlernen der Nutzung dieser Technologien unterstützen. Wichtig bei der Nutzung von Apps ist das Verst\"{a}ndnis der verwendeten Icons. Diese sollten intuitiv und unmissverst\"{a}ndlich sein. Bei unerfahrenen Nutzerinnen und Nutzern, insbesondere bei Seniorinnen und Senioren ist dies jedoch nicht immer gegeben. In einer ersten Stufe soll ein Icon-Set entwickelt werden, welches auch von der Zielgruppe der Seniorinnen und Senioren intuitiv verstanden wird und in zukünftig zu entwickelnden Lern-Apps eingesetzt werden soll. In einer Vorstudie wurde eine heterogene Gruppe zur Verst\"{a}ndlichkeit ausgew\"{a}hlter Icons aus dem Material Icon Set befragt. Die Befragung ergab, dass es zum einen Icons gibt, die verstanden werden, und zum anderen Icons, wie z. B. das empfohlene Icon für „eingeschalteter Wecker“ missinterpretiert werden.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{mci/Noichl2017,

title = {Apps f\"{u}r Seniorinnen und Senioren anpassen mittels spezifischer Tastaturen und Men\"{u}einstellungen},

author = {Svenja Noichl and Nadine Bergner and Ulrik Schroeder},

editor = {Manuel Burghardt and Raphael Wimmer and Christian Wolff and Christa Womser-Hacker},

url = {https://dl.gi.de/handle/20.500.12116/3239},

doi = {10.18420/muc2017-ws17-0412},

year  = {2017},

date = {2017-01-01},

urldate = {2017-01-01},

booktitle = {Mensch und Computer 2017 - Workshopband},

publisher = {Gesellschaft f\"{u}r Informatik e.V.},

address = {Regensburg},

abstract = {G\"{a}ngige Tastatur- und App-Layouts stellen Seniorinnen und Senioren h\"{a}ufig vor gro\sse Herausforderungen, weil die Buttons nicht gut zu treffen und die Schrift zu klein ist. Gleichzeitig bieten Smartphones und Tablets der Zielgruppe gute M\"{o}glichkeiten ihre digitalen Kompetenzen zu st\"{a}rken und somit aktiver Teil der digitalen Gesellschaft zu bleiben. In unterschiedlichen Workshops sollen die Kompetenzen der Zielgruppe im Bereich Informatiksysteme durch Lernapps gef\"{o}rdert werden. Um einen optimalen Umgang mit diesen Apps zu erm\"{o}glichen wurden zielgruppenspezifische Tastatur-Layouts sowie ein adaptives Einstellungsmen\"{u} entwickelt. Diese lassen eine individuelle Anpassung des Layouts von Apps auf die Bed\"{u}rfnisse der einzelnen Personen zu.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{gehre2016adapting,

title = {Adapting Feature Curve Networks to a Prescribed Scale},

author = {Anne Gehre and Isaak Lim and Leif Kobbelt},

url = {https://www.graphics.rwth-aachen.de/publication/03258/},

year  = {2016},

date = {2016-01-01},

urldate = {2016-01-01},

booktitle = {Computer Graphics Forum},

volume = {35},

number = {2},

pages = {319--330},

organization = {Wiley Online Library},

abstract = {Feature curves on surface meshes are usually defined solely based on local shape properties such as dihedral angles and principal curvatures. From the application perspective, however, the meaningfulness of a network of feature curves also depends on a global scale parameter that takes the distance between feature curves into account, i.e., on a coarse scale, nearby feature curves should be merged or suppressed if the surface region between them is not representable at the given scale/resolution. In this paper, we propose a computational approach to the intuitive notion of scale conforming feature curve networks where the density of feature curves on the surface adapts to a global scale parameter. We present a constrained global optimization algorithm that computes scale conforming feature curve networks by eliminating curve segments that represent surface features, which are not compatible to the prescribed scale. To demonstrate the usefulness of our approach we apply isotropic and anisotropic remeshing schemes that take our feature curve networks as input. For a number of example meshes, we thus generate high quality shape approximations at various levels of detail.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{cherek2015a,

title = {PERCs Demo: Persistently Trackable Tangibles on Capacitive Multi-Touch Displays},

author = {Christian Cherek and Simon Voelker and Jan Thar and Rene Linden and Florian Busch and Jan Borchers},

year  = {2015},

date = {2015-11-01},

urldate = {2015-11-01},

booktitle = {Proceedings of the 2015 International Conference on Interactive Tabletops and Surfaces},

pages = {389--392},

publisher = {ACM},

address = {Maderia, Portugal},

keywords = {passive widgets, tabletop interaction, Tangible user interfaces, transparent widgets},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2015c,

title = {Knobology Revisited: A Comparison of User Performance between Tangible and Virtual Rotary Knobs},

author = {Simon Voelker and Kjell Ivar \Overgr{a}rd and Chat Wacharamanotham and Jan Borchers},

doi = {10.1145/2817721.2817725},

year  = {2015},

date = {2015-11-01},

urldate = {2015-11-01},

booktitle = {ITS '15: Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces},

pages = {35--38},

publisher = {ACM},

address = {Maderia, Portugal},

keywords = {passive widgets, tabletop interaction, Tangible user interfaces, transparent widgets},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2015b,

title = {PERCs: Persistently Trackable Tangibles on Capacitive Multi-Touch Displays},

author = {Simon Voelker and Christian Cherek and Jan Thar and Thorsten Karrer and Christian Thoresen and Kjell Ivar \Overgr{a}rd and Jan Borchers},

url = {http://dx.doi.org/10.1145/2807442.2807466},

doi = {10.1145/2807442.2807466},

year  = {2015},

date = {2015-11-01},

urldate = {2015-11-01},

booktitle = {UIST '15: Proceedings of the 28th Annual ACM Symposium on User Interface Software and Technology},

pages = {351-356},

publisher = {ACM},

address = {Charlotte, NC, USA},

series = {UIST '15},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2015a,

title = {Combining Direct and Indirect Touch Input for Interactive Desktop Workspaces using Gaze Input},

author = {Simon Voelker and Andrii Matviienko and Johannes Sch\"{o}ning and Jan Borchers},

year  = {2015},

date = {2015-08-01},

urldate = {2015-08-01},

booktitle = {Proceedings of the 3rd ACM Symposium on Spatial User Interaction},

pages = {79--88},

publisher = {ACM},

address = {Los Angeles, CA, USA},

series = {SUI '15},

note = {SUI 2015 Best Paper Awards Honorable Mention},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{heller2015b,

title = {Transporters: Vision \& Touch Transitive Widgets for Capacitive Screens},

author = {Florian Heller and Simon Voelker and Chat Wacharamanotham and Jan Borchers},

url = {http://dx.doi.org/10.1145/2702613.2732707},

doi = {10.1145/2702613.2732707},

isbn = {978-1-4503-3146-3},

year  = {2015},

date = {2015-04-01},

urldate = {2015-04-01},

booktitle = {CHI '15: Extended Abstracts of the SIGCHI Conference on Human Factors in Computing Systems},

pages = {1603--1608},

address = {Seoul, Republic of Korea},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2014b,

title = {An Interaction Model for Grasp-Aware Tangibles on Interactive Surfaces},

author = {Simon Voelker and Christian Corsten and Nur Al-huda Hamdan and Kjell Ivar \Overgr{a}rd and Jan Borchers},

doi = {10.1145/2669485.2669494},

isbn = {978-1-4503-2587-5},

year  = {2014},

date = {2014-11-01},

urldate = {2014-11-01},

booktitle = {ITS '14: Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces},

pages = {279--282},

publisher = {ACM},

address = {Dresden, Germany},

keywords = {capacitive multi-touch, passive widgets, tabletop interaction, Tangible user interfaces, transparent widgets},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2014a,

title = {An Interaction Model for Touch-Aware Tangibles on Interactive Surfaces},

author = {Simon Voelker and Christian Corsten and Nur Al-huda Hamdan and Kjell Ivar \Overgr{a}rd and Jan Borchers},

doi = {10.1145/2559206.2581273},

isbn = {978-1-4503-2474-8},

year  = {2014},

date = {2014-04-01},

urldate = {2014-04-01},

booktitle = {CHI '14: Extended Abstracts of the 2014 ACM Conference on Human Factors in Computing Systems},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{nakajima2014a,

title = {PUCs: Detecting Transparent, Passive Untouched Capacitive Widgets on Unmodified Multi-touch Displays},

author = {Kosuke Nakajima and Yuichi Itoh and Simon Voelker and Christian Thoresen and Kjell Ivar \Overgr{a}rd and Jan Borchers},

year  = {2014},

date = {2014-01-01},

urldate = {2014-01-01},

booktitle = {Proc. IPSJ Interaction '14: Proceedings of the Conference on Information Processing Society of Japan},

pages = {108--113},

publisher = {Information Processing Society of Japan},

keywords = {capacitive multi-touch, passive widgets, tabletop interaction, Tangible user interfaces, transparent widgets},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{hennecke2013a,

title = {PerspectiveTable: Blending Physical and Virtual Collaborative Workspaces},

author = {Fabian Hennecke and Simon Voelker and Maximilian Schenk and Hauke Schaper and Jan Borchers and Andreas Butz},

year  = {2013},

date = {2013-04-01},

urldate = {2013-04-01},

booktitle = {Workshop on Blending Interaction},

address = {Paris, France},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2013a,

title = {An Evaluation of State Switching Methods for Indirect Touch Systems},

author = {Simon Voelker and Chat Wacharamanotham and Jan Borchers},

url = {http://doi.acm.org/10.1145/2470654.2470759},

doi = {10.1145/2470654.2470759},

isbn = {978-1-4503-1899-0},

year  = {2013},

date = {2013-04-01},

urldate = {2013-04-01},

booktitle = {CHI '13: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems},

pages = {745--754},

publisher = {ACM},

address = {Paris, France},

keywords = {indirect-touch, three-state model},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Kremer:2013:IMR,

title = {Advanced Automatic Hexahedral Mesh Generation from Surface Quad Meshes},

author = {Michael Kremer and David Bommes and Isaak Lim and Leif Kobbelt},

url = {https://www.graphics.rwth-aachen.de/publication/03203/},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

booktitle = {Proceedings of the 22nd International Meshing Roundtable},

publisher = {Springer-Verlag},

address = {Berlin},

abstract = {A purely topological approach for the generation of hexahedral meshes from quadrilateral surface meshes of genus zero has been proposed by M. M\"{u}ller-Hannemann: in a first stage, the input surface mesh is reduced to a single hexahedron by successively eliminating loops from the dual graph of the quad mesh; in the second stage, the hexahedral mesh is constructed by extruding a layer of hexahedra for each dual loop from the first stage in reverse elimination order. In this paper, we introduce several techniques to extend the scope of target shapes of the approach and significantly improve the quality of the generated hexahedral meshes. While the original method can only handle "almost convex" objects and requires mesh surgery and remeshing in case of concave geometry, we propose a method to overcome this issue by introducing the notion of concave dual loops. Furthermore, we analyze and improve the heuristic to determine the elimination order for the dual loops such that the inordinate introduction of interior singular edges, i.e. edges of degree other than four in the hexahedral mesh, can be avoided in many cases.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{hamdan2013a,

title = {Conceptual Framework for Surface Manager on Interactive Tabletops},

author = {Nur Al-huda Hamdan and Simon Voelker and Jan Borchers},

doi = {10.1145/2468356.2468629},

isbn = {978-1-4503-1952-2},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

booktitle = {Extended Abstracts of the 2013 CHI Conference on Human Factors in Computing Systems},

pages = {1527--1532},

publisher = {ACM},

address = {Paris, France},

series = {CHI EA '13},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{hennecke2013b,

title = {Simplifying Remote Collaboration Through Spatial Mirroring},

author = {Fabian Hennecke and Simon Voelker and Maximilian Schenk and Hauke Schaper and Jan Borchers and Andreas Butz},

url = {http://dx.doi.org/10.1007/978-3-642-40477-1_41},

doi = {10.1007/978-3-642-40477-1_41},

isbn = {978-3-642-40476-4},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

booktitle = {INTERACT '13: Proceedings of the 14th IFIP TC13 Conference on Human-Computer Interaction},

pages = {624-631},

publisher = {Springer Berlin Heidelberg},

series = {INTERACT '13},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2013d,

title = {PUCs: Detecting Transparent, Passive Untouched Capacitive Widgets on Unmodified Multi-touch Displays},

author = {Simon Voelker and Kosuke Nakajima and Christian Thoresen and Yuichi Itoh and Kjell Ivar \Overgr{a}rd and Jan Borchers},

doi = {10.1145/2508468.2514926},

isbn = {978-1-4503-2271-3},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

booktitle = {ITS '13: Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces},

pages = {101--104},

publisher = {ACM},

address = {St.~Andrews, Scotland,United Kingdom},

keywords = {capacitive multi-touch, passive widgets, tabletop interaction, Tangible user interfaces, transparent widgets},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2013b,

title = {PUCs Demo: Detecting Transparent, Passive Untouched Capacitive Widgets},

author = {Simon Voelker and Kosuke Nakajima and Christian Thoresen and Yuichi Itoh and Kjell Ivar \Overgr{a}rd and Jan Borchers},

url = {http://doi.acm.org/10.1145/2512349.2514595},

doi = {10.1145/2512349.2514595},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

booktitle = {ITS EA '13: Extended Abstracts of the ITS '13: Proceedings of the 2013 ACM International Conference on Interactive Tabletops and Surfaces},

pages = {325--328},

publisher = {ACM},

address = {St.~Andrews, Scotland, United Kingdom},

keywords = {capacitive multi-touch, passive widgets, tabletop interaction, Tangible user interfaces, transparent widgets},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2013c,

title = {PUCs Demo: Detecting Transparent, Passive Untouched Capacitive Widgets on Unmodified Multi-touch Displays},

author = {Simon Voelker and Kosuke Nakajima and Christian Thoresen and Yuichi Itoh and Kjell Ivar \Overgr{a}rd and Jan Borchers},

url = {http://doi.acm.org/10.1145/2508468.2514926},

doi = {10.1145/2508468.2514926},

isbn = {978-1-4503-2406-9},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

booktitle = {UIST EA '13: Extended Abstracts of the ACM Symposium on User Interface Software and Technology},

pages = {1--2},

publisher = {ACM},

address = {St.~Andrews, Scotland, United Kingdom},

keywords = {capacitive multi-touch, passive widgets, tabletop interaction, Tangible user interfaces, transparent widgets},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2012a,

title = {Understanding Flicking on Curved Surfaces},

author = {Simon Voelker and Christine Sutter and Lei Wang and Jan Borchers},

url = {http://doi.acm.org/10.1145/2207676.2207703},

doi = {10.1145/2207676.2207703},

isbn = {978-1-4503-1015-4},

year  = {2012},

date = {2012-01-01},

urldate = {2012-01-01},

booktitle = {CHI '12: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems},

pages = {189--198},

publisher = {ACM},

address = {Austin, Texas, USA},

series = {CHI '12},

keywords = {curved surface, flicking, touch-input},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{weiss2011b,

title = {FingerFlux: Near-surface Haptic Feedback on Tabletops},

author = {Malte Weiss and Chat Wacharamanotham and Simon Voelker and Jan Borchers},

doi = {10.1145/2047196.2047277},

isbn = {978-1-4503-0716-1},

year  = {2011},

date = {2011-01-01},

urldate = {2011-01-01},

booktitle = {UIST '11: Proceedings of the 24th annual ACM symposium on User interface software and technology},

pages = {615--620},

publisher = {ACM Press},

address = {New York, NY, USA},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{voelker2011a,

title = {Dynamic Portals: A Lightweight Metaphor for Fast Object Transfer on Interactive Surfaces},

author = {Simon Voelker and Malte Weiss and Chat Wacharamanotham and Jan Borchers},

doi = {10.1145/2076354.2076384},

isbn = {978-1-4503-0871-7},

year  = {2011},

date = {2011-01-01},

urldate = {2011-01-01},

booktitle = {ITS '11: Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces},

pages = {158--161},

publisher = {ACM Press},

address = {New York, NY, USA},

note = {ITS 2011 Best Note Award},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{weiss2010d,

title = {BendDesk: Dragging Across the Curve},

author = {Malte Weiss and Simon Voelker and Christine Sutter and Jan Borchers},

doi = {10.1145/1936652.1936654},

isbn = {978-1-4503-0399-6},

year  = {2010},

date = {2010-11-01},

urldate = {2010-11-01},

booktitle = {ITS '10: Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces},

pages = {1--10},

publisher = {ACM},

address = {Saarbr\"{u}cken, Germany},

abstract = {We present BendDesk, a hybrid interactive desk system that combines a horizontal and a vertical interactive surface via a curve. The system provides seamless touch input across its entire area. We explain scalable algorithms that provide graphical output and multi-touch input on a curved surface. In four user studies, we investigate the performance of dragging gestures across the curve, as well as the perception of lines on the surface. Our main findings are: 1) Dragging across a curve is significantly slower than on flat surfaces. 2) The flatter the angle when dragging across the curve, the longer the average trajectory and the higher the variance of trajectories across users. 3) The curved shape of the system impairs the perception of lines crossing both surfaces.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{weiss2010e,

title = {The BendDesk Demo - Multi-touch on a Curved Display},

author = {Malte Weiss and Simon Voelker and Jan Borchers},

doi = {10.1145/1936652.1936745},

isbn = {978-1-4503-0399-6},

year  = {2010},

date = {2010-11-01},

urldate = {2010-11-01},

booktitle = {ITS '10: Adjunct Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces},

pages = {317},

publisher = {ACM},

address = {Saarbr\"{u}cken, Germany},

abstract = {BendDesk is a curved interactive display that merges a vertical and a horizontal multi-touch surface with a curve. Users sitting at the table can perform multi-touch input on the entire surface. This demo shows the capabilities and potential applications of such a setup. We also present Bend Invaders, one of the first arcade games on a curved interactive surface. Our demo intends to encourage the discussion about the future of multi-touch in desk environments.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{weiss2009e,

title = {BendDesk: Seamless Integration of Horizontal and Vertical Multi-Touch Surfaces in Desk Environments},

author = {Malte Weiss and Simon Voelker and Jan Borchers},

doi = {10.1.1.405.2239},

isbn = {978-1-60558-733-2},

year  = {2009},

date = {2009-01-01},

urldate = {2009-01-01},

booktitle = {Adjunct Proceedings ITS ’09. ACM},

publisher = {ACM},

address = {Banff, Alberta, Canada},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}