@inproceedings{WoeldeckeVierjahnFlaskoetal.2009, author = {W{\"o}ldecke, Bj{\"o}rn and Vierjahn, Tom and Flasko, Matthias and Herder, Jens and Geiger, Christian}, title = {Steering actors through a virtual set employing vibro-tactile feedback}, series = {TEI '09 Proceedings of the 3rd International Conference on Tangible and Embedded Interaction}, booktitle = {TEI '09 Proceedings of the 3rd International Conference on Tangible and Embedded Interaction}, publisher = {ACM}, address = {New York}, isbn = {978-1-60558-493-5}, doi = {10.1145/1517664.1517703}, pages = {169 -- 174}, year = {2009}, abstract = {Actors in virtual studio productions are faced with the challenge that they have to interact with invisible virtual objects because these elements are rendered separately and combined with the real image later in the production process. Virtual sets typically use static virtual elements or animated objects with predefined behavior so that actors can practice their performance and errors can be corrected in the post production. With the demand for inexpensive live recording and interactive TV productions, virtual objects will be dynamically rendered at arbitrary positions that cannot be predicted by the actor. Perceptive aids have to be employed to support a natural interaction with these objects. In our work we study the effect of haptic feedback for a simple form of interaction. Actors are equipped with a custom built haptic belt and get vibrotactile feedback during a small navigational task (path following). We present a prototype of a wireless vibrotactile feedback device and a small framework for evaluating haptic feedback in a virtual set environment. Results from an initial pilot study indicate that vibrotactile feedback is a suitable non-visual aid for interaction that is at least comparable to audio-visual alternatives used in virtual set productions.}, language = {en} } @inproceedings{VierjahnWoeldeckeGeigeretal.2009, author = {Vierjahn, Tom and W{\"o}ldecke, Bj{\"o}rn and Geiger, Christian and Herder, Jens}, title = {Improved Direction Signalization Technique Employing Vibrotactile Feedback}, series = {11th Virtual Reality International Conference, VRIC'2009}, booktitle = {11th Virtual Reality International Conference, VRIC'2009}, isbn = {2-9515730-8-1}, pages = {1 -- 8}, year = {2009}, abstract = {Vibrotactile feedback via body-worn vibrating belts is a common means of direction signalization - e.g. for navigational tasks. Consequently such feedback devices are used to guide blind or visually impaired people but can also be used to support other wayfinding tasks - for instance, guiding actors in virtual studio productions. Recent effort has been made to simplify this task by integrating vibrotactile feedback into virtual studio applications. In this work we evaluate the accuracy of an improved direction signalization technique, utilizing a body-worn vibrotactile belt with a limited number of tactors, and compare it to other work. The results from our user study indicate that it is possible to signalize different directions accurately, even with a small number of tactors spaced by 90°.}, language = {en} } @article{StruchholzHerderLeckschat2006, author = {Struchholz, Holger and Herder, Jens and Leckschat, Dieter}, title = {Sound radiation simulation of musical instruments based on interpolation and filtering of multi-channel recordings}, series = {Journal of the 3D-Forum Society}, volume = {20}, journal = {Journal of the 3D-Forum Society}, number = {1}, pages = {41 -- 47}, year = {2006}, abstract = {With the virtual environment developed here, the characteristic sound radiation patterns of musical instruments can be experienced in real-time. The user may freely move around a musical instrument, thereby receiving acoustic and visual feedback in real-time. The perception of auditory and visual effects is intensified by the combination of acoustic and visual elements, as well as the option of user interaction. The simulation of characteristic sound radiation patterns is based on interpolating the intensities of a multichannel recording and offers a near-natural mapping of the sound radiation patterns. Additionally, a simple filter has been developed, enabling the qualitative simulation of an instrument's characteristic sound radiation patterns to be easily implemented within real-time 3D applications. Both methods of simulating sound radiation patterns have been evaluated for a saxophone with respect to their functionality and validity by means of spectral analysis and an auditory experiment.}, language = {en} } @inproceedings{SchirrwagenHerderUweMoebiusetal.2007, author = {Schirrwagen, Jochen and Herder, Jens and Uwe M{\"o}bius, Michael and Regulski, Katharina}, title = {Charakteristiken einer netzgest{\"u}tzten wissenschaftlichen Kommunikation und Umsetzung in Infrastruktur und Publikationsformen}, series = {German e-Science Conference 2007}, booktitle = {German e-Science Conference 2007}, address = {Baden-Baden}, year = {2007}, abstract = {Neue Formen der wissenschaftlichen Kommunikation basieren auf Fortschritten in den Informations- und Kommunikationstechnologien. Das dadurch m{\"o}gliche kollaborative wissenschaftliche Arbeiten liefert Ergebnisse, die in vielf{\"a}ltigen Formaten, als Text, Simulationsdaten oder multimediale Elemente vorliegen. Daraus ergeben sich besondere Anforderungen an Publikations- und Kommunikatonsinfrastrukturen, wie Interoperabilit{\"a}t, Repr{\"a}sentation, Verteilung und Archivierung derartiger komplexer digitaler Objekte. Mit der Initiative Digital Peer Publishing existiert eine Infrastruktur f{\"u}r das Publizieren in elektronischen Zeitschriften. Dieses Publikationsformat erlaubt neben einem schnellen Wissenstransfer eine umfassende Repr{\"a}sentation wissenschaftlicher Ergebnisse. Das Journal of Virtual Reality and Broadcasting als Teil dieser Initiative zeigt am Beispiel des elektronischen Publikationsprozesses den Stand der Wissensvernetzung in seiner Community, sowie aktuelle Entwicklungen um die Erweiterung innovativer Funktionen.}, subject = {E-Science}, language = {de} } @inproceedings{RyskeldievIgarashiZhangetal.2018, author = {Ryskeldiev, Bektur and Igarashi, Toshiharu and Zhang, Junjian and Ochiai, Yoichi and Cohen, Michael and Herder, Jens}, title = {Spotility: Crowdsourced Telepresence for Social and Collaborative Experiences in Mobile Mixed Reality}, series = {ACM Conference on Computer Supported Cooperative Work and Social Computing (CSCW '18)}, booktitle = {ACM Conference on Computer Supported Cooperative Work and Social Computing (CSCW '18)}, publisher = {ACM}, address = {New York}, isbn = {978-1-4503-6018-0}, doi = {10.1145/3272973.3274100}, pages = {373 -- 376}, year = {2018}, abstract = {Live video streaming is becoming increasingly popular as a form of interaction in social applications. One of its main advantages is an ability to immediately create and connect a community of remote users on the spot. In this paper we discuss how this feature can be used for crowdsourced completion of simple visual search tasks (such as finding specific objects in libraries and stores, or navigating around live events) and social interactions through mobile mixed reality telepresence interfaces. We present a prototype application that allows users to create a mixed reality space with a photospherical imagery as a background and interact with other connected users through viewpoint, audio, and video sharing, as well as realtime annotations in mixed reality space. Believing in the novelty of our system, we conducted a short series of interviews with industry professionals on the possible applications of our system. We discuss proposed use-cases for user evaluation, as well as outline future extensions of our system.}, language = {en} } @incollection{RattayGeigerHerderetal.2007, author = {Rattay, Oliver and Geiger, Christian and Herder, Jens and Goebbels, Gernot and Nikitin, Igor}, title = {Zweih{\"a}ndige Interaktion in VR-Umgebungen}, series = {Augmented \& Virtual Reality in der Produktentstehung}, volume = {209}, booktitle = {Augmented \& Virtual Reality in der Produktentstehung}, editor = {Gausemeier, J{\"u}rgen and Grafe, Michael}, publisher = {Heinz Nixdorf Institut, Universit{\"a}t Paderborn}, address = {Paderborn}, isbn = {978-3-939350-28-6}, pages = {315 -- 332}, year = {2007}, abstract = {Einfach benutzbare VR-Anwendungen erfordern andere Interaktionstechniken als konventionelle Desktop-Anwendungen mit Maus, Tastatur und Desktop-Metapher zur Verf{\"u}gung stellen. Da solche Ans{\"a}tze in Konzeption und Realisierung deutlicher komplexer sind, m{\"u}ssen diese mit Sorgfalt ausgew{\"a}hlt werden. Folgt man der Argumentation, dass VR eine nat{\"u}rliche Interaktion mit virtuellen Objekten erm{\"o}glicht, so f{\"u}hrt dies fast zwangsl{\"a}ufig zu zweih{\"a}ndigen Interaktionstechniken f{\"u}r virtuelle Umgebungen, da Benutzer in realen Umgebungen gewohnt sind, fast ausschlie{\"i}‚lich zweih{\"a}ndig zu agieren. In diesem Beitrag geben wir eine {\"U}bersicht {\"u}ber den Stand der Technik im Bereich zweih{\"a}ndiger Interaktion, leiten Anforderungen an eine Entwicklung zweih{\"a}ndiger Interaktionstechniken in VR ab und beschreiben einen eigenen Ansatz. Dabei geht es um die zweih{\"a}ndige Interaktion bei der Simulation flexibler biegeschlaffer Bauteile (z. B. Schlauchverbindungen).}, language = {de} } @inproceedings{RakowKorezkiBender2012, author = {Rakow, Thomas C. and Korezki, Vitali and Bender, Axel}, title = {Comparing the Contrast for Electronic and Traditional Whiteboards in a Real-life Environment}, series = {Proceedings Electronic Displays Conference 2012, Nuremberg, Germany}, booktitle = {Proceedings Electronic Displays Conference 2012, Nuremberg, Germany}, publisher = {Design \& Elektronik [i.e. WEKA-Fachmedien]}, address = {Haar}, year = {2012}, language = {en} } @article{RakowFaeskornWoykeSchieferetal.2009, author = {Rakow, Thomas C. and Faeskorn-Woyke, Heide and Schiefer, Bernhard and Vossen, Gottfried and W{\"a}sch, J{\"u}rgen}, title = {Tools f{\"u}r die Lehre im Fach Datenbanken}, series = {Datenbank-Spektrum}, volume = {9}, journal = {Datenbank-Spektrum}, number = {29}, issn = {1618-2162}, pages = {5 -- 13}, year = {2009}, language = {de} } @inproceedings{Rakow2007, author = {Rakow, Thomas C.}, title = {Meine Weltbibliothek}, series = {Informatik 2007: Informatik trifft Logistik; Beitr{\"a}ge der 37. Jahrestagung der Gesellschaft f{\"u}r Informatik e.V. (GI); 24. - 27. September 2007 in Bremen}, volume = {GI-Edition Proceedings, 110}, booktitle = {Informatik 2007: Informatik trifft Logistik; Beitr{\"a}ge der 37. Jahrestagung der Gesellschaft f{\"u}r Informatik e.V. (GI); 24. - 27. September 2007 in Bremen}, editor = {Koschke, Rainer and Herzog, Otthein and R{\"o}diger, Karl-Heinz and Ronthaler, Marc}, publisher = {Gesellschaft f{\"u}r Informatik; Jahrestagung der Gesellschaft f{\"u}r Informatik e.V.}, address = {Bonn}, isbn = {978-3-88579-204-8}, pages = {515 -- 520}, year = {2007}, abstract = {In dem Artikel wird die Nutzungwissenschaftlicher Literatur in der Informatik vor zwanzig und zehn Jahren sowie heute beschrieben. Die vorhandenen Vor- und Nachteile und der historische Wandel in der Nutzung werden dargestellt. Auf diesem Vergleich basierend werden Empfehlungen f{\"u}r die Zukunft der wissenschaftlichen Literaturnutzung in Form einer Weltbibliothek 2.0 gegeben.}, language = {de} } @article{Rakow2012, author = {Rakow, Thomas C.}, title = {Touchscreen ersetzt Whiteboard}, series = {FHD Journal}, volume = {33}, journal = {FHD Journal}, number = {2}, pages = {51}, year = {2012}, language = {de} }