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Jan Klimke

Ph.D. student



Jan Klimke

Computer Graphics Systems

für Softwaresystemtechnik
Prof.-Dr.-Helmert-Str. 2-3
D-14482 Potsdam, Germany

Telephone: (+49 331) 550 93904

Fax: (+49 331) 550 172

Room:  H 2.13

Email: jan.klimke(_at_)hpi.uni-potsdam.de





Winter Term 2009/2010

Summer Term 2010

  • Lecture "Programming of 3D Applications"

Winter Term 2010/2011

Student Project Supervision

  • Bachelor Project "Service-based Visualization of 3D City Models on Mobile Clients"


Scalable Multi-Platform Distribution of Spatial 3D Contents

Klimke, Jan; Hagedorn, Benjamin; Döllner, Jürgen in International Journal of 3-D Information Modeling 2014 .

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 systems differ significantly. This makes it hard to provide fast, visually appealing ren-derings of 3D data throughout a variety of platforms and devices. Current mobile or web-based solutions for 3D visualization usually require raw 3D scene data such as triangle meshes together with textures delivered from server to client, what makes them strongly limited in terms of size and complexity of the models they can handle. This paper introduces a new approach for provisioning of massive, virtual 3D city models on different platforms namely web browsers, smartphones or tablets, by means of an interactive map assembled from artificial oblique image tiles. The key concept is to synthesize such images of a virtual 3D city model by a 3D rendering service in a preprocessing step. This service encapsulates model handling and 3D rendering techniques for high quality visualization of massive 3D models. By generating image tiles using this service, the 3D rendering process is shifted from the client side, which provides major advantages: (a) The complexity of the 3D city model data is decoupled from data transfer complexity (b) the implementation of client applica-tions is simplified significantly as 3D rendering is encapsulated on server side (c) 3D city models can be easily deployed for and used by a large number of concurrent users, leading to a high degree of scalability of the overall approach. All core 3D rendering techniques are performed on a dedicated 3D rendering server, and thin-client applications can be compactly implemented for various devices and platforms.
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