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 - 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 - Herder, Jens A1 - Büntig, Fabian A1 - Daemen, Jeff A1 - Lang, Jaroslaw A1 - Lück, Florian A1 - Säger, Mitja A1 - Sörensen, Roluf A1 - Hermanni, Markus A1 - Vonolfen, Wolfgang T1 - Subtle Animations using Talent Tracking in a Virtual (TV) Studio T2 - 17th International Conference on Human and Computer N2 - Markerless talent tracking is widely used for interactions and animations within virtual environments. In a virtual (tv) studio talents could be overburden by interaction tasks because camera and text require extensive attention. We take a look into animations and inter- actions within a studio, which do not require any special attention or learning. We show the generation of an artificial shadow from a talent, which ease the keying process, where separation of real shadows from the background is a difficult task. We also demonstrate animations of footsteps and dust. Furthermore, capturing talents’ height can also be used to adjust the parameters of elements in the virtual environment, like the position and scaling of a virtual display. In addition to the talents, a rigid body was tracked as placeholder for graphics, easing the interaction tasks for a talent. Two test productions show the possibilities, which subtle animations offer. In the second production, the rendering was improved (shadows, filtering, normal maps, ...) and instead of using the rigid body to move an object (a flag), the animation was only controlled by the hand’s position. KW - talent tracking KW - virtual studios KW - realtime animations KW - FHD KW - Virtual (TV) Studio Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-16009 UR - http://vsvr.medien.hs-duesseldorf.de/publications/hc2014-subtle-animations-abstract.html CY - Hamamatsu/Aizu-Wakamatsu/Duesseldorf ER - TY - CHAP A1 - Herder, Jens A1 - Brosda, Constantin A1 - Djuderija, Sascha A1 - Drochtert, Daniel A1 - Genc, Ömer A1 - Joeres, Stephan A1 - Kellerberg, Patrick A1 - Looschen, Simon A1 - Geiger, Christian A1 - Wöldecke, Björn T1 - TouchPlanVS - A Tangible Multitouch Planning System for Virtual TV Studio Productions T2 - 2011 IEEE Symposium on 3D User Interfaces (3DUI) N2 - This article presents a new approach of integrating tangible user feedback in todays virtual TV studio productions. We describe a tangible multitouch planning system, enabling multiple users to prepare and customize scene flow and settings. Users can collaboratively view and interact with virtual objects by using a tangible user interface on a shared multitouch surface. The in a 2D setting created TV scenes are simultaneously rendered on an external monitor, using a production/target renderer in 3D. Thereby the user experiences a closer reproduction of a final production. Subsequently, users are able to join together the scenes into one complex plot. Within the developing process, a video prototype of the system shows the user interaction and enables early reviews and evaluations. The requirement analysis is based on expert interviews. KW - augmented KW - virtual realities KW - multimedia information systems KW - FHD KW - VSVR KW - Virtual (TV) Studio Y1 - 2011 UR - https://ieeexplore.ieee.org/document/5759226 SN - 978-1-4577-0064-4 U6 - https://doi.org/10.1109/3DUI.2011.5759226 SP - 103 EP - 104 PB - IEEE CY - Singapore ER - TY - CHAP A1 - Marinos, Dionysios A1 - Geiger, Christian A1 - Herder, Jens T1 - Large-Area Moderator Tracking and Demonstrational Configuration of Position Based Interactions for Virtual Studio T2 - EuroITV '12 Proceedings of the 10th European Conference on Interactive TV and Video N2 - In this paper we introduce a system for tracking persons walking or standing on a large planar surface and for using the acquired data to easily configure position based interactions for virtual studio productions. The tracking component of the system, radarTRACK, is based on a laser scanner device capable of delivering interaction points on a large configurable plane. By using the device on the floor it is possible to use the delivered data to detect feet positions and derive the position and orientation of one or more users in real time. The second component of the system, named OscCalibrator, allows for the easy creation of multidimensional linear mappings between input and output parameters and the routing of OSC messages within a single modular design environment. We demonstrate the use of our system to flexibly create position-based interactions in a virtual studio environment. KW - body tracking KW - OSC mapping KW - virtual studio interaction KW - measurement KW - design KW - reliability KW - experimentation KW - human factors KW - VSVR KW - Virtual (TV) Studio Y1 - 2012 UR - https://dl.acm.org/citation.cfm?id=2325639 SN - 978-1-4503-1107-6 U6 - https://doi.org/10.1145/2325616.2325639 SP - 105 EP - 114 PB - ACM CY - New York ER - TY - CHAP A1 - Simsch, Jonathan A1 - Herder, Jens ED - Chisik, Yoram T1 - SpiderFeedback - Visual Feedback for Orientation in Virtual TV Studios T2 - ACE'14, 11th Advances in Computer Entertainment Technology Conference, ACM, Funchal, Portugal N2 - A visual and spatial feedback system for orientation in virtual sets of virtual TV studios was developed and evaluated. It is based on a green proxy object, which moves around in the acting space by way of four transparent wires. A separate unit controls four winches and is connected to an engine, which renders the virtual set. A new developed plugin registers a virtual object’s position with the proxy object which imitates the virtual object’s movement on stage. This will allow actors to establish important eye contact with a virtual object and feel more comfortable in a virtual set. Furthermore, interaction with the virtual object and its proxy can be realised through a markerless actor tracking system. Several possible scenarios for user application were recorded and presented to experts in the broadcast industry, who evaluated the potential of SpiderFeedback in interviews and by questionnaires. KW - Mixed reality KW - visual feedback KW - stage flight system KW - presentation assistance KW - VSVR KW - Virtual (TV) Studio Y1 - 2014 UR - https://dl.acm.org/citation.cfm?doid=2663806.2663830 SN - 978-1-4503-2945-3 U6 - https://doi.org/10.1145/2663806.2663830 N1 - Sie haben Zugriff auf den Volltext innerhalb des HSD Campus. PB - ACM CY - New York ER - TY - CHAP A1 - Ludwig, Philipp A1 - Büchel, Joachim A1 - Herder, Jens A1 - Vonolfen, Wolfgang T1 - InEarGuide - A Navigation and Interaction Feedback System using In Ear Headphones for Virtual TV Studio Productions T2 - 9. Workshop Virtuelle und Erweiterte Realität der GI-Fachgruppe VR/AR N2 - This paper presents an approach to integrate non-visual user feedback in today's virtual tv studio productions. Since recent studies showed that systems providing vibro-tactile feedback are not sufficient for replacing the common visual feedback, we developed an audio-based solution using an in ear headphone system, enabling a talent to move, avoid and point to virtual objects in a blue or green box. The system consists of an optical head tracking system, a wireless in ear monitor system and a workstation, which performs all application and audio processing. Using head related transfer functions, the talent gets directional and distance cues. Past research showed, that generating reflections of the sounds and simulating the acoustics of the virtual room helps the listener to conceive the acoustical feedback, we included this technique as well. In a user study with 15 participants the performance of the system was evaluated. KW - Navigation KW - virtual TV KW - erweiterte Realität KW - VSVR KW - Virtual (TV) Studio Y1 - 2012 CY - Düsseldorf ER - TY - CHAP A1 - Daemen, Jeff A1 - Herder, Jens A1 - Koch, Cornelius A1 - Ladwig, Philipp A1 - Wiche, Roman A1 - Wilgen, Kai T1 - Semi-Automatic Camera and Switcher Control for Live Broadcast T2 - TVX '16 Proceedings of the ACM International Conference on Interactive Experiences for TV and Online Video, Chicago, Illinois, USA — June 22 - 24, 2016 N2 - Live video broadcasting requires a multitude of professional expertise to enable multi-camera productions. Robotic systems allow the automation of common and repeated tracking shots. However, predefined camera shots do not allow quick adjustments when required due to unpredictable events. We introduce a modular automated robotic camera control and video switch system, based on fundamental cinematographic rules. The actors' positions are provided by a markerless tracking system. In addition, sound levels of actors' lavalier microphones are used to analyse the current scene. An expert system determines appropriate camera angles and decides when to switch from one camera to another. A test production was conducted to observe the developed prototype in a live broadcast scenario and served as a video-demonstration for an evaluation. KW - automated robotic camera system KW - actor tracking KW - switcher control KW - scene analysis KW - film rules KW - automated shot control KW - Virtual (TV) Studio Y1 - 2016 UR - http://vsvr.medien.hs-duesseldorf.de/publications/tvx2016-rob-abstract.html SN - 978-1-4503-4067-0 U6 - https://doi.org/10.1145/2932206.2933559 SP - 129 EP - 134 PB - ACM CY - New York ER - TY - JOUR A1 - Daemen, Jeff A1 - Herder, Jens A1 - Koch, Cornelius A1 - Ladwig, Philipp A1 - Wiche, Roman A1 - Wilgen, Kai T1 - Halbautomatische Steuerung von Kamera und Bildmischer bei Live-Übertragungen JF - Fachzeitschrift für Fernsehen, Film und Elektronische Medien N2 - Live-Video-Broadcasting mit mehreren Kameras erfordert eine Vielzahl von Fachkenntnissen. Robotersysteme ermöglichen zwar die Automatisierung von gängigen und wiederholten Tracking-Aufnahmen, diese erlauben jedoch keine kurzfristigen Anpassungen aufgrund von unvorhersehbaren Ereignissen. In diesem Beitrag wird ein modulares, automatisiertes Kamerasteuerungs- und Bildschnitt-System eingeführt, das auf grundlegenden kinematografischen Regeln basiert. Die Positionen der Akteure werden durch ein markerloses Tracking-System bereitgestellt. Darüber hinaus werden Tonpegel der Lavaliermikrofone der Akteure zur Analyse der aktuellen Szene verwendet. Ein Expertensystem ermittelt geeignete Kamerawinkel und entscheidet, wann von einer Kamera auf eine andere umgeschaltet werden soll. Eine Testproduktion wurde durchgeführt, um den entwickelten Prototyp in einem Live-Broadcast-Szenario zu beobachten und diente als Videodemonstration für eine Evaluierung. KW - Halbautomatische Roboterkamerasteuerung KW - Verfolgen von Darstellern KW - Bildmischer KW - Szenenanalyse KW - Filmregeln KW - Automatische Bildauswahl KW - Virtual (TV) Studio Y1 - 2017 N1 - Der Artikel ist eine Übersetzung von dem Konferenzbeitrag "Semi-Automatic Camera and Switcher Control for Live Broadcast", International Conference on Interactive Experiences for Television and Online Video, TVX'2016, Chicago, IL, USA, ACM, DOI=10.1145/2932206.2933559, June 22-24, 2016. IS - 11 SP - 501 EP - 505 PB - Schiele & Schön ER - TY - CHAP A1 - Herder, Jens A1 - Daemen, Jeff A1 - Haufs-Brusberg, Peter A1 - Abdel Aziz, Isis ED - Brunnett, Guido ED - Coquillart, Sabine ED - van Liere, Robert ED - Welch, Gregory ED - Váša, Libor T1 - Four Metamorphosis States in a Distributed Virtual (TV) Studio: Human, Cyborg, Avatar, and Bot - Markerless Tracking and Feedback for Realtime Animation Control T2 - Virtual Realities: International Dagstuhl Seminar, Dagstuhl Castle, Germany, June 9-14, 2013, Revised Selected Papers KW - Markeless tracking KW - virtual studio KW - Avatars KW - virtual characters KW - Interaction feedback KW - VSVR KW - Virtual (TV) Studio Y1 - 2015 UR - https://link.springer.com/chapter/10.1007/978-3-319-17043-5_2 SN - 978-3-319-17042-8 U6 - https://doi.org/10.1007/978-3-319-17043-5_2 VL - LNCS, 8844 SP - 16 EP - 32 PB - Springer CY - Cham ER -