TY - CHAP A1 - Franz, Thomas A1 - Koch, Jörg A1 - Dividino, Renata A1 - Staab, Steffen T1 - LENA-TR: Browsing Linked Open Data Along Knowledge-Aspects T2 - Linked data meets artificial intelligence : papers from the AAAI spring symposium ; [held March 22 - 24, 2010 at Stanford University, Stanford, California USA] Y1 - 2010 UR - http://www.thomas-franz.de/publications/lena-tr.pdf SN - 978-1-57735-461-1 SP - 46 EP - 51 PB - AAAI Press CY - Menlo Park ER - TY - THES A1 - Franz, Thomas T1 - Semantic Personal Information Management BT - Zugl.: Koblenz, Univ., Diss., 2010 Y1 - 2010 SN - 978-3-86853-706-2 PB - Universität Koblenz-Landau CY - München ER - TY - CHAP A1 - Stocklein, Jorg A1 - Geiger, Christian A1 - Paelke, Volker T1 - Mixed reality in the loop — design process for interactive mechatronical systems T2 - 2010 IEEE Virtual Reality Conference (VR), 20.03.2010 - 24.03.2010, Waltham Y1 - 2010 UR - http://ieeexplore.ieee.org/document/5444755/ SN - 978-1-4244-6237-7 U6 - https://doi.org/10.1109/VR.2010.5444755 SP - 303 EP - 304 PB - IEEE ER - TY - CHAP A1 - Marinos, Dionysios A1 - Geiger, Christian A1 - Schwirten, Tobias A1 - Göbel, Sebastian ED - Krüger, Antonio ED - Schöning, Johannes ED - Wigdor, Daniel ED - Haller, Michael T1 - Multitouch navigation in zoomable user interfaces for large diagrams T2 - ACM International Conference on Interactive Tabletops and Surfaces - ITS '10, 07.11.2010 - 10.11.2010, Saarbrücken Y1 - 2010 UR - http://portal.acm.org/citation.cfm?doid=1936652 SN - 9781450303996 U6 - https://doi.org/10.1145/1936652.1936713 PB - ACM Press CY - New York ER - TY - CHAP A1 - Göbel, Sebastian A1 - Geiger, Christian A1 - Heinze, Christin A1 - Marinos, Dionysios ED - Santucci, Giuseppe T1 - Creating a virtual archery experience T2 - Proceedings of the International Conference on Advanced Visual Interfaces - AVI '10, 26.05.2010 - 28.05.2010, ROma Y1 - 2010 UR - http://portal.acm.org/citation.cfm?doid=1842993 SN - 9781450300766 U6 - https://doi.org/10.1145/1842993.1843056 PB - ACM Press CY - New York ER - TY - CHAP A1 - Stöcklein, Jörg A1 - Pogscheba, Patrick A1 - Geiger, Christian A1 - Paelke, Volker ED - Gain, James ED - Marais, Patrick T1 - MiReAS: a mixed reality software framework for iterative prototyping of control strategies for an indoor airship T2 - Proceedings of the 7th International Conference on Computer Graphics, Virtual Reality, Visualisation and Interaction in Africa - AFRIGRAPH '10 , 21.06.2010 - 23.06.2010, Franschhoek Y1 - 2010 UR - http://portal.acm.org/citation.cfm?doid=1811158 SN - 9781450301183 U6 - https://doi.org/10.1145/1811158.1811164 PB - ACM Press CY - New York ER - TY - CHAP A1 - Geiger, Christian A1 - Herder, Jens A1 - Göbel, Sebastian A1 - Heinze, Christin A1 - Marinos, Dionysios T1 - Design and Virtual Studio Presentation of a Traditional Archery Simulator T2 - Proceedings of the Entertainment Interfaces Track 2010 at Interaktive Kulturen, Duisburg, Germany, September 12-15, 2010 N2 - In this paper we describe the design of a virtual reality simulator for traditional intuitive archery. Traditional archers aim without a target figure. Good shooting results require an excellent body-eye coordination that allows the user to perform identical movements when drawing the bow. Our simulator provides a virtual archery experience and supports the user to learn and practice the motion sequence of traditional archery in a virtual environment. We use an infrared tracking system to capture the user’s movements in order to correct his movement. To provide a realistic haptic feedback a real bow is used as interaction device. Our system provides a believable user experience and supports the user to learn how to shoot in the traditional way. Following a user-centered iterative design approach we developed a number of prototypes and evaluated them for refinement in sequent iteration cycles. For illustration purposes we created a short video clip in our virtual studio about this project that presents the main ideas in an informative yet entertaining way. KW - vr archery KW - 3D interaction KW - interactive sport simulation KW - user experience KW - user-centered design KW - Lehre KW - VSVR KW - Virtual Reality Y1 - 2010 UR - https://dl.gi.de/handle/20.500.12116/7385;jsessionid=149F7CDB1184309727393899BD806939 UR - http://ceur-ws.org/Vol-634/Entertainment-Interfaces-Proceedings03.pdf SP - 37 EP - 44 CY - Duisburg ER - TY - CHAP A1 - Klapdohr, Monika A1 - Wöldecke, Björn A1 - Marinos, Dionysios A1 - Herder, Jens A1 - Geiger, Christian A1 - Vonolfen, Wolfgang T1 - Vibrotactile Pitfalls: Arm Guidance for Moderators in Virtual TV Studios T2 - HC '10 Proceedings of the 13th International Conference on Humans and Computers N2 - For this study, an experimental vibrotactile feedback system was developed to help actors with the task of moving their arm to a certain place in a virtual tv studio under live conditions. Our intention is to improve interaction with virtual objects in a virtual set, which are usually not directly visible to the actor, but only on distant displays. Vibrotactile feedback might improve the appearance on tv because an actor is able to look in any desired direction (camera or virtual object) or to read text on a teleprompter while interacting with a virtual object. Visual feedback in a virtual studio lacks spatial relation to the actor, which impedes the adjustment of the desired interaction. The five tactors of the implemented system which are mounted on the tracked arm give additional information like collision, navigation and activation. The user study for the developed system shows that the duration for reaching a certain target is much longer in case no visual feedback is given, but the accuracy is similar. In this study, subjects reported that an activation signal indicating the arrival at the target of a drag & drop task was helpful. In this paper, we discuss the problems we encountered while developing such a vibrotactile display. Keeping these pitfalls in mind could lead to better feedback systems for actors in virtual studio environments. KW - vibrotactile feedback KW - Virtual (TV) Studio KW - augmented reality KW - FHD KW - VSVR Y1 - 2010 UR - https://dl.acm.org/citation.cfm?id=1994506 SP - 72 EP - 80 PB - University of Aizu Press CY - Aizu-Wakamatsu ER - TY - CHAP A1 - Ayten, Hüseyin A1 - Herder, Jens A1 - Vonolfen, Wolfgang T1 - Visual Acceptance Evaluation of Soft Shadow Algorithms for Virtual TV Studios T2 - HC '10 Proceedings of the 13th International Conference on Humans and Computers N2 - Shadows in computer graphics are an important rendering aspect for spatial objects. For realtime computer applications such as games, it is essential to represent shadows as accurate as possible. Also, various tv stations work with virtual studio systems instead of real studio sets. Especially for those systems, a realistic impression of the rendered and mixed scene is important. One challenge, hence, is the creation of a natural shadow impression. This paper presents the results of an empirical study to compare the performance and quality of different shadow mapping methods. For this test, a prototype studio renderer was developed. A percentage closer filter (pcf) with a number of specific resolutions is used to minimize the aliasing issue. More advanced algorithms which generate smooth shadows like the percentage closer soft shadow (pcss) method as well as the variance shadow maps (vsm) method are analysed. Different open source apis are used to develop the virtual studio renderer, giving the benefit of permanent enhancement. The Ogre 3D graphic engine is used to implement the rendering system, benefiting from various functions and plugins. The transmission of the tracking data is accomplished with the vrpn server/client and the Intersense api. The different shadow algorithms are compared in a virtual studio environment which also casts real shadows and thus gives a chance for a direct comparison throughout the empirical user study. The performance is measured in frames per secon KW - Virtual (TV) Studio KW - soft shadow KW - realtime rendering KW - augmented reality KW - algorithmus KW - FHD KW - experimentation KW - verification KW - VSVR Y1 - 2010 UR - https://dl.acm.org/citation.cfm?id=1994505 SP - 66 EP - 71 PB - University of Aizu Press CY - Aizu-Wakamatsu ER - TY - CHAP A1 - Schmidt, Holger T1 - Threat- and Risk-Analysis During Early Security Requirements Engineering T2 - 2010 International Conference on Availability, Reliability and Security N2 - We present a threat and risk-driven methodology to security requirements engineering. Our approach has a strong focus on gathering, modeling, and analyzing the environment in which a secure ICT-system to be built is located. The knowledge about the environment comprises threat and risk models. This security-relevant knowledge is used to assess the adequacy of security mechanisms, which are selected to establish security requirements. KW - risk analysis KW - data security KW - security requirements engineering KW - software engineering Y1 - 2010 UR - https://ieeexplore.ieee.org/document/5438095 SN - 978-1-4244-5880-6 U6 - https://doi.org/10.1109/ARES.2010.14 SP - 188 EP - 195 PB - IEEE CY - Krakow ER -