Nebiker, Stephan
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Nebiker, Stephan
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- PublikationImage-based reality-capturing and 3D modelling for the creation of VR cycling simulations(Copernicus, 17.06.2021) Wahbeh, Wissam; Ammann, Manuela; Nebiker, Stephan; van Eggermond, Michael; Erath, Alexander; Wahbeh, Wissam [in: ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences]With this paper, we present a novel approach for efficiently creating reality-based, high-fidelity urban 3D models for interactive VR cycling simulations. The foundation of these 3D models is accurately georeferenced street-level imagery, which can be captured using vehicle-based or portable mapping platforms. Depending on the desired type of urban model, the street-level imagery is either used for semi-automatically texturing an existing city model or for automatically creating textured 3D meshes from multi-view reconstructions using commercial off-the-shelf software. The resulting textured urban 3D model is then integrated with a real-time traffic simulation solution to create a VR framework based on the Unity game engine. Subsequently, the resulting urban scenes and different planning scenarios can be explored on a physical cycling simulator using a VR helmet or viewed as a 360-degree or conventional video. In addition, the VR environment can be used for augmented reality applications, e.g., mobile augmented reality maps. We apply this framework to a case study in the city of Berne to illustrate design variants of new cycling infrastructure at a major traffic junction to collect feedback from practitioners about the potential for practical applications in planning processes.04B - Beitrag Konferenzschrift
- PublikationAccurate visual localization in outdoor and indoor environments exploiting 3D image spaces as spatial reference(International Society for Photogrammetry and Remote Sensing, 2018) Rettenmund, Daniel; Fehr, Markus; Cavegn, Stefan; Nebiker, Stephan [in: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences]In this paper, we present a method for visual localization and pose estimation based on 3D image spaces. The method works in indoor and outdoor environments and does not require the presence of control points or markers. The method is evaluated with different sensors in an outdoor and an indoor test field. The results of our research show the viability of single image localization with absolute position accuracies at the decimetre level for outdoor environments and 5 cm or better for indoor environments. However, the evaluation also revealed a number of limitations of single image visual localization in real-world environments. Some of them could be addressed by an alternative AR-based localization approach, which we also present and compare in this paper. We then discuss the strengths and weaknesses of the two approaches and show possibilities for combining them to obtain accurate and robust visual localization in an absolute coordinate frame.04B - Beitrag Konferenzschrift
- PublikationGeospatial Augmented Reality als interaktives Erlebnis im Museum am Beispiel der Swissarena App(Deutsche Gesellschaft für Photogrammetrie, Fernerkundung und Geoinformation, 06/2016) Wüest, Robert; Zwick, Michael; Nebiker, Stephan; Kersten, Thomas P. [in: 36. Wissenschaftlich-Technische Jahrestagung der DGPF – Dreiländertagung der SGPF, DGPF und OVG, Bern]04B - Beitrag Konferenzschrift
- PublikationGeometrie- und farbbasierte Punktwolkenklassifizierung von komplexen urbanen Laserscanningszenen mittels überwachter SOM-Klassifikation(2013) Matti, Eric; Nebiker, Stephan04B - Beitrag Konferenzschrift
- Publikation3DCityTV - Cloud-basierte Stereovision Mobile Mapping Services(Wichmann, 2013) Nebiker, Stephan; Eugster, Hannes04B - Beitrag Konferenzschrift
- PublikationIntegrierte Georeferenzierung von luft- und bodengestützten Stereobilddaten im Straßenbereich(2013) Nebiker, Stephan; Eugster, Hannes; Kamer, Kay04B - Beitrag Konferenzschrift
- PublikationAutomated 3D Road Sign Mapping with Stereovision-based Mobile Mapping exploiting Disparity Information from Dense Stereo Matching(2012) Cavegn, Stefan; Nebiker, Stephan04B - Beitrag Konferenzschrift
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- PublikationOpenWebGlobe An open source SDK for creating large-scale Virtual Globes on a WebGL basis(2012) Loesch, Benjamin; Christen, Martin; Nebiker, Stephan04B - Beitrag Konferenzschrift
- PublikationPlanning and Managemenet of Realtime Geospatial UAS Missions within a Virtual Globe Environment(01.09.2011) Nebiker, Stephan; Eugster, Hannes; Christen, Martin; Flückiger, Kevin04B - Beitrag Konferenzschrift