TY - CHAP A1 - Herder, Jens T1 - Cooperative Tools for Teaching : an Impact of a Network Environment T2 - Annual Report of the Information Systems and Technology Center, University of Aizu, October 1997 N2 - Education at the University of Aizu is focussed upon computer science. Besides being the subject matter of many courses, however, the computer also plays a vital role in the educational process itself, both in the distribution of instructional media, and in providing students with valuable practical experience. All students have unlimited access (24-hours-a-day) to individual networked workstations, most of which are multimedia-capable (even video capture is possible in two exercise rooms). Without software and content tailored for computer-aided instruction, the hardware becomes an expensive decoration. In any case, there is a need to better educate the instructors and students in the use of the equipment. In the interest of facilitating effective, collaborative use of network-based computers in teaching, this article explores the impact that a network environment can have on such activities. First, as a general overview, and to examine the motivation for the use of a network environment in teaching, this article reviews a range of different styles of collaboration. Then the article shows what kind of tools are available for use, within the context of what has come to be called Computer-Supported Cooperative Work (CSCW). KW - CAI KW - CAT KW - computer education KW - collaborative work KW - CSCW KW - groupware KW - FHD Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-827 SP - 3 EP - 8 CY - Aizu ER - TY - CHAP A1 - Herder, Jens T1 - Sound Spatialization Framework: An Audio Toolkit for Virtual Environments T2 - First International Conference on Human and Computer, Aizu-Wakamatsu, September 1998 N2 - The Sound Spatialization Framework is a C++ toolkit and development environment for providing advanced sound spatialization for virtual reality and multimedia applications. The Sound Spatialization Framework provides many powerful display and user-interface features not found in other sound spatialization software packages. It provides facilities that go beyond simple sound source spatialization: visualization and editing of the soundscape, multiple sinks, clustering of sound sources, monitoring and controlling resource management, support for various spatialization backends, and classes for MIDI animation and handling. KW - sound spatialization KW - resource management KW - virtual environments KW - spatial sound authoring KW - user interface design KW - human-machine interfaces Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-788 CY - Aizu ER - TY - CHAP A1 - Herder, Jens T1 - Tools and widgets for spatial sound authoring T2 - CompuGraphics ' 97, Sixth International Conference on Computational Graphics and Visualization Techniques: Graphics in the Internet Age, Vilamoura, Portugal N2 - Broader use of virtual reality environments and sophisticated animations spawn a need for spatial sound. Until now, spatial sound design has been based very much on experience and trial and error. Most effects are hand-crafted, because good design tools for spatial sound do not exist. This paper discusses spatial sound authoring and its applications, including shared virtual reality environments based on VRML. New utilities introduced by this research are an inspector for sound sources, an interactive resource manager, and a visual soundscape manipulator. The tools are part of a sound spatialization framework and allow a designer/author of multimedia content to monitor and debug sound events. Resource constraints like limited sound spatialization channels can also be simulated. KW - spatial sound KW - virtual reality environments KW - multimedia KW - spatialization KW - spatial media KW - vizualization KW - user interface design KW - man-machine interfaces Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-896 UR - http://vsvr.medien.hs-duesseldorf.de/publications/cg97-tawfssa/welcome.html SN - 972-8342-02-0 N1 - Zugriff auf die Konferenzveröffentlichung über den angegebene URL conference paper available via URL SP - 87 EP - 95 CY - Portugal ER - TY - CHAP A1 - Vermeegen, Kai A1 - Herder, Jens ED - Herder, Jens ED - Geiger, Christian ED - Dörner, Ralf ED - Grimm, Paul T1 - A Lighthouse-based Camera Tracking System for Professional Virtual Studios T2 - Workshop Proceedings / Tagungsband: Virtuelle und Erweiterte Realität – 15. Workshop der GI-Fachgruppe VR/AR N2 - This article describes the possibilities and problems that occur using the SteamVR tracking 2.0 system as a camera tracking system in a virtual studio and explains an approach for implementation and calibration within a professional studio environment. The tracking system allows for cost effective deployment. Relevant application fields are also mixed reality recording and streaming of AR and VR experiences. KW - Camera Tracking KW - SteamVR KW - HMD KW - Virtual (TV) Studio KW - Augmented Virtuality Y1 - 2018 UR - http://vsvr.medien.hs-duesseldorf.de/publications/gi-vrar2018-lighthouse-vs/ SN - 978-3-8440-6215-1 U6 - https://doi.org/10.2370/9783844062151 N1 - Zugriff auf den Titel über die angegebene URL. Publication access via URL. SP - 19 EP - 26 PB - Shaker Verlag CY - Herzogenrath ER - TY - CHAP A1 - Becker, Thomas A1 - Herder, Jens T1 - Cost effective tangibles using fiducials for infrared multi-touch frames T2 - 15th International Conference on Human and Computer N2 - The late immersion of multi-touch sensitive displays enables the use of tangibles on multi-touch screens. There a several wide spread and/or sophisticated solutions to fulfill this need but they seem to have some flaws. One popular system at the time of writing is an overlay frame that can be placed on a normal display with the corresponding size. The frame creates a grid with infrared light emitting diodes. The disruption of this grid can be detected and messages with the positions are sent via usb to a connected computer. This system is quite robust in matters of ambient light insensitivity and also fast to calibrate. Unfortunately it is not created with the recognition of tangibles in mind and printed patterns can not be resolved. This article summarizes an attempt to create fiducials that are recognized by an infrared multi-touch frame as fingers. Those false fingers are checked by a software for known patterns. Once a known pattern (= fiducial) has been recognized its position and orientation are send with the finger positions towards the interactive software. The usability is tested with an example application where tangibles and finger touches are used in combination. KW - low cost multi-touch infrared overlay frame KW - fiducial tangible recognition KW - FHD Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-16011 UR - http://vsvr.medien.hs-duesseldorf.de/publications/hc2012-fiducials-abstract.html N1 - Copyright 2012 University of Aizu Press CY - Hamamatsu/Aizu-Wakamatsu/Duesseldorf ER - TY - CHAP A1 - Flasko, Matthias A1 - Pogscheba, Patrick A1 - Herder, Jens A1 - Vonolfen, Wolfgang T1 - Heterogeneous binocular camera-tracking in a Virtual Studio T2 - 8. Workshop Virtuelle und Erweiterte Realität der GI-Fachgruppe VR/AR N2 - This paper presents a tracking of parts of a human body in a virtual TV studio environment. The tracking is based on a depth camera and a HD studio camera and aims at a realistic interaction between the actor and the computer generated environment. Stereo calibration methods are used to match corresponding pixels of both cameras (HD color and depth image). Hence the images were rectified and column aligned. The disparity is used to correct the depth image pixel by pixel. This image registration results in row and column aligned images where ghost regions are in the depth image resulting from occlusion. Both images are used to generate foreground masks with chroma and depth keying. The color image is taken for skin color segmentation to determine and distinguish the actor’s hands and face. In the depth image the flesh colored regions were used to determine their spatial position. The extracted positions were augmented by virtual objects. The scene is rendered correctly with virtual camera parameters which were calculated from the camera calibration parameters. Generated computer graphics with alpha value are combined with the HD color images. This compositing shows interaction with augmented objects for verification. The additional depth information results in changing the size of objects next to the hands when the actor moves around. KW - virtual studio KW - camera-tracking KW - VSVR Y1 - 2011 CY - Wedel ER - TY - CHAP A1 - Fiedler, Jannik A1 - Rilling, Stefan A1 - Bogen, Manfred A1 - Herder, Jens ED - Braz, José T1 - Multimodal interaction techniques in scientific data visualization: An analytical survey T2 - In Proceedings of the 10th International Conference on Computer Graphics Theory and Applications (GRAPP-2015) N2 - The interpretation process of complex data sets makes the integration of effective interaction techniques crucial. Recent work in the field of human-computer interaction has shown that there is strong evidence that multimodal user interaction, i.e. the integration of various input modalities and interaction techniques into one comprehensive user interface, can improve human performance when interacting with complex data sets. However, it is still unclear which factors make these user interfaces superior to unimodal user interfaces. The contribution of this work is an analytical comparison of a multimodal and a unimodal user interface for a scientific visualization application. We show that multimodal user interaction with simultaneously integrated speech and gesture input improves user performance regarding efficiency and ease of use. KW - Interaction KW - Mulitmodal KW - Interaction Techniques KW - 3-D Interaction KW - Immersive Environments KW - VSVR Y1 - 2015 SN - 978-989-758-087-1 U6 - https://doi.org/10.5220/0005296404310437 SP - 431 EP - 437 PB - SCITEPRESS CY - s. l. ER - TY - CHAP A1 - Vierjahn, Tom A1 - Wöldecke, Björn A1 - Geiger, Christian A1 - Herder, Jens T1 - Improved Direction Signalization Technique Employing Vibrotactile Feedback T2 - 11th Virtual Reality International Conference, VRIC'2009 N2 - 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°. KW - tactile feedback KW - direction signalization KW - wayfinding KW - human factors KW - FHD KW - VSVR Y1 - 2009 SN - 2-9515730-8-1 SP - 1 EP - 8 ER - TY - CHAP A1 - Ryskeldiev, Bektur A1 - Cohen, Michael A1 - Herder, Jens T1 - Applying rotational tracking and photospherical imagery to immersive mobile telepresence and live video streaming groupware T2 - Proceeding SA '17 SIGGRAPH Asia 2017 Mobile Graphics & Interactive Applications, Article No. 5 N2 - Mobile live video streaming is becoming an increasingly popular form of interaction both in social media and remote collaboration scenarios. However, in most cases the streamed video does not take mobile devices' spatial data into account (e.g., the viewers do not know the spatial orientation of a streamer), or use such data only in specific scenarios (e.g., to navigate around a spherical video stream). KW - spatial media KW - rotational tracking KW - mixed reality KW - live streaming KW - social media KW - telepresence KW - mobile computing KW - groupware KW - photospherical imagery Y1 - 2017 UR - https://dl.acm.org/citation.cfm?doid=3132787.3132813 SN - 978-1-4503-5410-3 U6 - https://doi.org/10.1145/3132787.3132813 PB - ACM CY - New York ER - TY - JOUR A1 - Herder, Jens T1 - Sound Spatialization Framework: An Audio Toolkit for Virtual Environments JF - Journal of the 3D-Forum Society N2 - The Sound Spatialization Framework is a C++ toolkit and development environment for providing advanced sound spatialization for virtual reality and multimedia applications. The Sound Spatialization Framework provides many powerful display and user-interface features not found in other sound spatialization software packages. It provides facilities that go beyond simple sound source spatialization: visualization and editing of the soundscape, multiple sinks, clustering of sound sources, monitoring and controlling resource management, support for various spatialization backends, and classes for MIDI animation and handling. Keywords: sound spatialization, resource management, virtual environments, spatial sound authoring, user interface design, human-machine interfaces KW - sound spatialization KW - resource management KW - virtual environments KW - spatial sound authoring KW - user interface design KW - human-machine interfaces Y1 - 1998 VL - 12 IS - 3 SP - 17 EP - 22 ER -