Benjamin Hagedorn

Hasso Plattner Institute · Research Group Computer Graphics Systems

In many predictive maintenance scenarios, the costs for not accurately detecting or anticipating faults can be considerably higher than the cumulative costs for inspections or premature maintenance. However, conventional symmetric loss functions widely used in machine learning cannot reflect such different costs. In this paper, we propose a method...

Automated processing, semantic-enrichment and visual analytics methods for point clouds are often use-case specific for a given domain (e.g, for Facility Management (FM) applications). Currently, this means that applicable processing techniques, semantics and visual analytics methods need to be selected, generated or implemented by human domain exp...

Integration and analysis of real-time and historic sensor data provides important insights into the operational status of buildings. There is a need for the integration of sensor data and digital representations of the built environment for furthering stakeholder engagement within the realms of Real Estate 4.0 and Facility Management (FM), especial...

Integration and analysis of real-time and historic sensor data provides important insights into the operational status of buildings. There is a need for the integration of sensor data and digital representations of the built environment for furthering stakeholder engagement within the realms of Real Estate 4.0 and Facility Management (FM), especial...

Advances versus adaptation of Industry 4.0 practices in Facility Management (FM) have created usage demand for up-to-date digitized building assets. The use of Building Information Modelling (BIM) for FM in the Operation and Maintenance (O&M) stages of the building lifecycle is intended to bridge the gap between operations and digital data, but lac...

Im Allgemeinen liegen Geodaten und georeferenzierte Daten verteilt vor, sind heterogen in ihrem Inhalt und ihrer Form, umfassen sehr große Datenmengen und müssen in verschiedenen IT-Informationssystemen integriert und in verschiedenen Anwendungskontexten genutzt werden. Im Mittelpunkt dieser Arbeit stehen deshalb Konzepte und Techniken für die Inte...

Communication of cultural heritage by means of digital information systems has been gaining more and more importance over recent years. Interactive virtual 3D applications enable users to explore 3D virtual reconstructions in real-time, to directly interact with the contained digital cultural heritage artifacts, and to obtain insights into this dat...

Presentation of Research Paper "Web-based and Mobile Provisioning of Virtual 3D Reconstructions"

Virtual 3D city models provide powerful user interfaces for communication of 2D and 3D geoinformation. Providing high quality visualization of massive 3D geoinformation in a scalable, fast, and cost efficient manner is still a challenging task. Especially for mobile and web-based system environments, software and hardware configurations of target s...

This report describes the subject and preliminary results of our work in the context of the HPI Future SOC Lab. This work generally aims on exploiting high performance computing (HPC) capabilities for service-based 3D rendering and service-based, interactive 3D visualization. A major focus is on the application of HPC technologies for the creation,...

This report describes the subject and preliminary results of our work in the context of the HPI Future SOC Lab, which generally aims on how to exploit high performance computing (HPC) capabilities for service-based 3D rendering and service‐based, interactive 3D visualization. A major focus is on the application of HPC technologies for the creation,...

3D geovirtual environments (3D GeoVEs) such as virtual 3D city models serve as integration platforms for complex geospatial information and facilitate effective use and communication of that information. Recent developments towards standards and service-based, interactive 3D geovisualization systems enable the large-scale distribution of 3D GeoVEs...

Virtual 3D city models provide powerful user interfaces for communication of 2D and 3D geoinformation. Providing high quality visualization of massive 3D geoinformation in a scalable, fast, and cost efficient manner is still a challenging task. Especially for mobile and web-based system environments, software and hardware configurations of target s...

Large virtual 3D scenes play a major role in growing number of applications, systems, and technologies to effectively communicate complex spatial information. Their web-based provision, in particular on mobile devices, represents a key challenge for system and application development. In contrast to approaches based on streaming 3D scene data to cl...

Design, implementation, and operation of interactive 3D map services are faced with a large number of challenges including (a) processing and integration of massive amounts of heterogeneous and distributed 2D and 3D geodata such as terrain models, buildings models, and thematic georeferenced data, (b) assembling, styling, and rendering 3D map conte...

In this article, we present strategies for service-oriented, standards and image-based 3D geovisualisation that have the potential to provide interactive visualisation of complex 3D geovirtual environments (3DGeoVE) on lightweight devices. In our approach, interactive geovisualisation clients retrieve sets of 2D images of projective views of 3DGeoV...

Virtual 3D city models serve as integration platforms for complex geospatial and georeferenced information and as medium for effective communication of spatial information. In this paper, we present a system architecture for service-oriented, interactive D visualization of massive 3D city models on thin clients such as mobile phones and tablets. It...

Georeferenced data is available from a wide range of sources, e.g., Directory Services, Sensor Observation Services, Web Feature Services or even proprietary interfaces. Many of the data originating from an Internet of Things will be three-dimensional representing outdoor as well as indoor geographic features and their properties. Based on this dat...

The Web Perspective View Service (WPVS) generates 2D images of perspective views of 3D geovirtual environments (e.g., virtual 3D city models) and represents one fundamental class of portrayal services. As key advantage, this image-based approach can be deployed across arbitrary networks due to server-side 3D rendering and 3D model management. Howev...

This report summarizes my work in the HPI Research School on Service Oriented Systems Engineering. It motivates and points out the underlying research questions in the field of service-based 3D portrayal of large and complex 3D geovirtual envi- ronments, presents my approach to solving these questions, and demonstrates and highlights results by exa...

In this paper, we present strategies for service-oriented, standards and image-based 3D geovisualization that have the potential to provide interactive vi-sualization of complex 3D geovirtual environments (3DGeoVE) on lightweight devices. In our approach, interactive geovisualization clients retrieve sets of 2D images of projective views of 3DGeoVE...

Navigation represents a fundamental interaction technique for 3D virtual environments (3DVEs) — it enables users to explore the virtual world and to interact with its objects. For this, effective navigation techniques are required that take into account users and their goals. They also should prevent common problems of 3D navigation, such as an int...

Indoor routing represents an essential feature required by applications and systems that provide spatial information about complex sites, buildings and infrastructures such as in the case of visitor guidance for trade fairs and customer navigation at airports or train stations. Apart from up-to-date, precise 3D spatial models these systems and appl...

Presentation of Research Paper "Towards an Indoor Level-of-Detail Model for Route Visualization"

A Web Perspective View Service (WPVS) provides images of perspective views of 3D geovirtual environments (3DGeoVE) which can be displayed by the service consumer without client-based 3D rendering. Such visualizations can be easily accessed by simple clients such as mobile devices and can be integrated into processes, e.g., for city planning or ad-h...

A Web Perspective View Service (WPVS) provides images of perspective views of 3D geovirtual environments (3DGeoVE) which can be displayed by the service consumer without client-based 3D rendering. Such visualizations can be easily accessed by simple clients such as mobile devices and can be integrated into processes, e.g., for city planning or ad-h...

Navigation represents the fundamental interaction technique in 3D virtual environments (3D VEs) as it enables the users to explore the 3D world and to interact with its objects. Efficient navigation strategies and techniques are required, which take account of the users and their goals and avoid problems of general navigation methods, such as “gett...

Styling geovisualizations means to control the geovisualization process, i.e., to define which geoinformation to include and how to visualize them. It is a crucial aspect for enabling flexible and adaptable geovisualization systems and applications as it allows authors and users to influence the visual appearance of the geovisualization and so to a...

Visualization of 3D geovirtual environments enables users to gain insight into and to interactively operate with complex 3D geoinformation as well as to explore and analyze underlying structures, relationships, and associated thematic georeferenced data. It represents a key functionality for a growing number of applications and systems such as for...

This paper presents an approach to visualize and analyze 3D building information models within virtual 3D city models. Building information models (BIMs) formalize and represent detailed information related to the lifecycle of buildings, e.g., information about composition, facilities, equipment, usage, maintenance, and workflows such as rescue sce...

Dieser Beitrag beschreibt wie urbane räumliche Daten aus verschiedenen Anwendungsdomänen wie dem Computer Aided Design (CAD), Geographischen Informationssystemen (GIS) und Bauwerksinformationssystemen (BIM) mit Hilfe eines dienstbasierten virtuellen 3D-Stadtmodells kombiniert und integriert werden können. Der Ansatz beruht auf einem 3D-Viewer für k...

In this paper we describe how urban data from different system and application domains such as Computer Aided Design (CAD), Geographic Information Systems (GIS), and Building Information Models (BIM) can be integrated by a service-based virtual 3D city model system. The 3D viewer client allows users to access, to import, and to integrate semantic-e...

This paper outlines a novel approach for user navigation in complex virtual 3D city models on mobile devices. Users navigate within the virtual 3D city model by sketching navigation commands in the perspective view on the mobile client. The sketches are sent to the server, which reprojects the sketches onto the 3D scene, interprets these sketches i...

1. Design and Composition of 3D Geoinformation Services Benjamin Hagedorn 2. Operating System Abstractions for Service-Based Systems Michael Schöbel 3. A Task-oriented Approach to User-centered Design of Service-Based Enterprise Applications Matthias Uflacker 4. A Framework for Adaptive Transport in Service- Oriented Systems based on Performance Pr...

Geoinformationen über urbane Räume werden in immer größerem Maß in hoher Qualität, Auflösung und Aktualität sowie mit unterschiedlichen inhaltlichen Ausprägungen verfügbar. Hindernisse für die integrative Nutzung dieser heterogenen raumbezogenen Informationsbestände liegen in technisch unterschiedlichen Bereitstellungsverfahren, konzeptionell unter...

This paper outlines a novel approach for user navigation in complex virtual 3D city models on mobile devices. Users navigate within the virtual 3D city model by sketching navigation commands in the perspective view on the mobile client. The sketches are sent to the server, which reprojects the sketches onto the 3D scene, interprets these sketches i...

CodeCrawler ist ein Werkzeug zur zweidimensionalen Visualisierung von Software. Dieser Artikel gibt einen kurzen Überblick über die Nutzbarkeit von CodeCrawler für die Analyse eines unbekannten Softwaresystems. Zielsystem ist das FTP-Programm lftp. Wir zeigen welche Vorbereitungen für die Erstellung einer Visualisierung notwendig sind und welche An...

Softwaresysteme sind sehr komplexe Systeme und wegen ihrer intangibelen Natur oft nur schwer begreifbar. Im Bereich der Informationsvisualisierung existieren viele Ansätze um die Entwicklung und Wartung von Software durch eine angemessene Darstellung zu unterstützen. Eine besondere Bedeutung für diese Darstellung können Metaphern haben, da sie die...