@misc{GedatFechnerFiebelkornetal.2018, author = {Gedat, Egbert and Fechner, Pascal and Fiebelkorn, Richard and Vandenhouten, Jan and Vandenhouten, Ralf}, title = {Image recognition of multi-perspective data for intelligent analysis of gestures and actions}, series = {Wissenschaftliche Beitr{\"a}ge 2018}, volume = {22}, journal = {Wissenschaftliche Beitr{\"a}ge 2018}, issn = {0949-8214}, doi = {10.15771/0949-8214_2018_3}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-10230}, pages = {25 -- 30}, year = {2018}, abstract = {The BERMUDA project started in January 2015 and was successfully completed after less than three years in August 2017. A technical set-up and an image processing and analysis software were developed to record and evaluate multi-perspective videos. Based on two cameras, positioned relatively far from one another with tilted axes, synchronized videos were recorded in the laboratory and in real life. The evaluation comprised the background elimination, the body part classification, the clustering, the assignment to persons and eventually the reconstruction of the skeletons. Based on the skeletons, machine learning techniques were developed to recognize the poses of the persons and next for the actions performed. It was, for example, possible to detect the action of a punch, which is relevant in security issues, with a precision of 51.3 \% and a recall of 60.6 \%.}, language = {en} } @misc{VandenhoutenBehrensSelz2007, author = {Vandenhouten, Ralf and Behrens, Thomas and Selz, Miriam}, title = {Datenerfassung und Visualisierung von Vitalparametern und Prim{\"a}rsignalen auf dem Computer und auf mobilen Endger{\"a}ten}, series = {Wissenschaftliche Beitr{\"a}ge 2007}, volume = {12}, journal = {Wissenschaftliche Beitr{\"a}ge 2007}, issn = {0949-8214}, doi = {10.15771/0949-8214_2007_1_11}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus-555}, pages = {72 -- 77}, year = {2007}, abstract = {In Kliniken besteht der Bedarf nach einer l{\"u}ckenlosen Aufzeichnung der Vitalparameter (z. B. Herzfrequenz, Blutdruck) und Prim{\"a}rsignale (z. B. EKG). Besonders in der Notfallmedizin ist eine st{\"a}ndige Patienten{\"u}berwachung lebensnotwendig. Zudem dienen die erfassten Daten der aktuellen Patienten-Dokumentation, aber auch zur Analyse im Bereich der Forschung und f{\"u}r Studien. F{\"u}r diesen Zweck wurde das Telematik-System »Multi-Patientenmonitoring« entwickelt. Dieses System dient der Datenerfassung, Signalvisualisierung und Echtzeit{\"u}bertragung von Vitalparametern an beliebig viele PCs und mobile Ger{\"a}te des Krankenhausnetzwerkes. Motiviert durch das Universit{\"a}tsklinikum T{\"u}bingen wurde das Projekt von der Wildauer Firma ixellence initiiert und in interdisziplin{\"a}rer Zusammenarbeit mit medizinischen Einrichtungen, dem Fachgebiet Telematik an der TFH Wildau und der Philips Medizin-Systeme GmbH realisiert.}, language = {de} } @misc{VandenhoutenKistel2012, author = {Vandenhouten, Ralf and Kistel, Thomas}, title = {A model-driven concept for the automatic integration of legacy protocols to distributed component-oriented software systems}, series = {Wissenschaftliche Beitr{\"a}ge 2012}, volume = {16}, journal = {Wissenschaftliche Beitr{\"a}ge 2012}, issn = {0949-8214}, doi = {10.15771/0949-8214_2012_1_8}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus-1295}, pages = {63 -- 68}, year = {2012}, abstract = {The implementation of communication protocols is an important development task that appears frequently in software projects. This article is a vision paper that describes the components of the currently available implementation strategies and problems that arise. The article introduces the main existing protocol engineering techniques and puts them into the context of model driven software development. At the end a methodology is introduced for the automatic generation of manager interfaces of Device Agent protocols for the use in a distributed component oriented environment, using ASN.1 and SDL. This article describes the preliminary results of the MOSES project (model-driven software engineering of distributed embedded systems) which is funded by the German ministry of Education and Research (BMBF). In this project the authors are concentrating on medical and facility management areas where they have particular experiences.}, language = {en} } @misc{VandenhoutenHollandMoritz2012, author = {Vandenhouten, Ralf and Holland-Moritz, Ralph}, title = {A software architecture for intelligent facility management based on complex event processing}, series = {Wissenschaftliche Beitr{\"a}ge 2012}, volume = {16}, journal = {Wissenschaftliche Beitr{\"a}ge 2012}, issn = {0949-8214}, doi = {10.15771/0949-8214_2012_1_7}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus-1303}, pages = {57 -- 62}, year = {2012}, abstract = {This article presents an architectural suggestion for an intelligent management system which evaluates data using artificial intelligence. The architecture uses complex event processing in order to gain high flexibility when connecting the individual components. As an illustration of the components and their interaction a facility management system is used as an example.}, language = {en} } @misc{VandenhoutenKistel2008, author = {Vandenhouten, Ralf and Kistel, Thomas}, title = {Geb{\"a}udemanagementsoftware auf Basis des OSGi-Standards}, series = {Wissenschaftliche Beitr{\"a}ge 2008}, volume = {13}, journal = {Wissenschaftliche Beitr{\"a}ge 2008}, issn = {0949-8214}, doi = {10.15771/0949-8214_2008_1_8}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus-724}, pages = {56 -- 61}, year = {2008}, abstract = {Der OSGi-Standard wurde f{\"u}r die Entwicklung komponentenbasierter Software in Java spezifiziert. In diesem Artikel wird eine Architektur f{\"u}r Geb{\"a}udemanagementsoftware vorgestellt, die auf Basis von OSGi entwickelt wurde. Grundlage der Client-Server- Architektur des entwickelten Systems ist das Eclipse- Framework, das mit Equinox eine Implementierung des OSGi-Standards liefert. Die verwendeten OSGi- Technologien erm{\"o}glichen eine modulare Integration unterschiedlicher Geb{\"a}udemanagement-Ger{\"a}te verschiedener Hersteller in die Softwareplattform und dessen einheitliche Steuerung und Visualisierung. Die Client-Anwendung des Systems profitiert dabei von der komfortablen Benutzeroberfl{\"a}che der Eclipse Rich-Client-Platform. Das Ergebnis ist eine flexibel einsetzbare Softwarel{\"o}sung f{\"u}r ein breites Anwendungsspektrum, das von der {\"U}berwachung von Industrie- und B{\"u}rogeb{\"a}uden bis hin zu Privath{\"a}usern mit Touch-Display Bedienung reicht. Wesentliche Vorteile der L{\"o}sung sind die kontextsensitive Informationsbereitstellung sowie die Unterst{\"u}tzung und Automatisierung der Prozesse im Geb{\"a}udemanagement. Der Artikel geht auf die technologischen Hintergr{\"u}nde des Software-Systems ein und stellt die betriebswirtschaftlichen Anwendungsf{\"a}lle vor.}, language = {de} } @misc{VandenhoutenKistel2010, author = {Vandenhouten, Ralf and Kistel, Thomas}, title = {Middleware-Konzepte zur Verteilung von komponentenbasierten Anwendungen im Netzwerk}, series = {Wissenschaftliche Beitr{\"a}ge 2009/2010}, volume = {14}, journal = {Wissenschaftliche Beitr{\"a}ge 2009/2010}, issn = {0949-8214}, doi = {10.15771/0949-8214_2010_1_4}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus-839}, pages = {33 -- 38}, year = {2010}, abstract = {Dieser Beitrag untersucht Konzepte zur Verteilung von Softwareanwendungen auf Basis des OSGi-Standards im Netzwerk. Darin wird mit R-OSGi eine L{\"o}sung vorgestellt, die transparente Anwendungsentwicklung gegen{\"u}ber der verwendeten Netzwerktechnologie erm{\"o}glicht. Dabei wird auch darauf eingegangen, wie netzwerkspezifische Charakteristiken (h{\"o}here Latenzzeiten, {\"U}bertragungsfehler oder Ausfall des Netzwerkes) agnostisch auf die h{\"o}heren Softwareschichten abgebildet werden k{\"o}nnen.}, language = {de} } @incollection{MietznerVandenhoutenHartmann2015, author = {Mietzner, Dana and Vandenhouten, Ralf and Hartmann, Frank}, title = {Collaborative Problem Solving for Regional Development? - A New Approach of Public Participation}, series = {Electronic Government and Electronic Participation}, booktitle = {Electronic Government and Electronic Participation}, editor = {Tambouris, Efthimios}, publisher = {IOS Press}, address = {Amsterdam}, isbn = {978-1-61499-570-8}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-9177}, publisher = {Technische Hochschule Wildau}, pages = {19 -- 26}, year = {2015}, abstract = {In this paper, we present a concept prototype for a socio-technical assistant (s.TAS) as a collaborative problem-solving approach to support the regional development in a selected rural district. The presented concept considers insides from citizen participation as an open government instrument and strongly incorporates collaborative value creation to address regional development issues. The presented approach incorporates citizens and other regional stakeholders (e.g., companies, organizations, associations) as problem-solvers and strongly enables regional stakeholders and the public administration to develop solutions jointly as an ongoing learning process. In this sense, s.TAS addresses participation approaches and elaborates participation to collaboration. For the development of this participatory problem-solving approach, we conducted (1) a broad literature review on participatory approaches and (2) we implemented a qualitative, collaborative research approach with participants from different stakeholder groups. In several workshop rounds, supported by interviews and surveys we developed a concept prototype for the socio-technical assistant s.TAS, which is a technical, smart system, which supports information, communication, participation and collaboration in the selected region.}, language = {en} } @article{VandenhoutenWendlandt2015, author = {Vandenhouten, Ralf and Wendlandt, Ole}, title = {High-precision Optical Position Measurement in Indoor Environments}, series = {Optik \& Photonik}, volume = {10}, journal = {Optik \& Photonik}, number = {3}, issn = {1863-1460}, doi = {10.1002/opph.201500022}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-9305}, pages = {24 -- 27}, year = {2015}, abstract = {Indoor localization is still a challenge today. Conventional methods based on satellite navigation, like GPS, can only be used outdoors. On the other hand, radio signal architectures, like WiFi or NFC, require high cost infrastructure to be installed inside the building. In collaboration with Ixellence GmbH, the research group for telematics of the University of Applied Science Wildau is developing a new inexpensive solution based on the camera of a mobile device. This approach only requires the availability of multiple identifiable landmarks that can be installed cost-efficiently in an indoor environment. Our investigations show that this method is very accurate and can produce repeatable, robust results.}, language = {en} } @inproceedings{PulwerFiebelkornZeschetal.2019, author = {Pulwer, Silvio and Fiebelkorn, Richard and Zesch, Christoph and Steglich, Patrick and Villringer, Claus and Villasmunta, Francesco and Gedat, Egbert and Handrich, Jan and Schrader, Sigurd and Vandenhouten, Ralf}, title = {Endoscopic orientation by multimodal data fusion}, series = {Proc. SPIE 10931, MOEMS and Miniaturized Systems XVIII}, booktitle = {Proc. SPIE 10931, MOEMS and Miniaturized Systems XVIII}, issn = {1996-756X}, doi = {10.1117/12.2508470}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-11420}, year = {2019}, abstract = {To improve the feasibility of endoscopic inspection processes we developed a system that provides online information about position, orientation and viewing direction of endoscopes, to support the analysis of endoscopic images and to ease the operational handling of the equipment. The setup is based on an industrial endoscope consisting of a camera, various MEMS and multimodal data fusion. The software contains algorithms for feature and geometric structure recognition as well as Kalman filters. To track the distal end of the endoscope and to generate 3D point cloud data in real time the optical and photometrical characteristics of the system are registered and the movement of the endoscope is reconstructed by using image processing techniques.}, language = {en} } @inproceedings{MetzlerVandenhoutenKroneetal.1998, author = {Metzler, Volker H. and Vandenhouten, Ralf and Krone, J{\"o}rg and Grebe, Reinhard}, title = {Unsupervised image segementation by stochastic reconstruction}, series = {Proceedings of SPIE}, volume = {3338}, booktitle = {Proceedings of SPIE}, issn = {1996-756X}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-9329}, year = {1998}, abstract = {To segment complex and versatile image data from different modalities it is almost impossible to achieve satisfying results without the consideration of contextual information. In this approach, image segmentation is regarded as a high- dimensional optimization task, that can be solved by stochastical methods like evolutionary algorithms (EA). Initially, the iterative algorithm is provided with a set of good-quality sample segmentations. An efficient EA-based learning strategy generates a segmentation for a given target image from the provided samples. This two-level process consists of a global image-based optimization whose convergence is enhanced by locally operating pixel-based Boltzmann processes which restrict the search space to reasonable subsets. The stochastic reconstruction extracts the relevant information from the samples in order to adapt it onto the current segmentation problem, which results in a consistent labeling for the target image. The algorithm works unsupervised, because the range of possible labels and their contextual interpretation is provided implicitly by the sample segmentations. To prove the usefulness of the method experimental results based on both, reproducible phantom images and physiological NMR scans are presented. Moreover, an analysis of the basic segmentation and convergence properties is provided.}, language = {en} }