Prof. Dr. Jürgen Döllner


Real-Time Expressive Rendering of City Models

Döllner, Jürgen and Walther, Maike
In Proceedings of the IEEE Information Visualization, pages 245-250, 2003


City models have become central elements for visually communicating spatial information related to urban areas and have manifold applications. Our real-time non-photorealistic rendering technique aims at abstract, comprehensible, and vivid drawings of assemblies of polygonal 3D urban objects. It takes into account related principles in cartography, cognition, and nonphotorealism. Technically, the geometry of a building is rendered using expressive line drawings to enhance the edges, two-tone or three-tone shading to draw the faces, and simulated shadows. The edge enhancement offers several degrees of freedom, such as interactively changing the style, width, tilt, color, transparency, and length of the strokes. Traditional drawings of cities and panoramas inspired the tone shading that achieves a pleasing visual color effect. The rendering technique can be applied not only to city models but to polygonal shapes in general.

BibTeX file

author = { D{\"o}llner, J{\"u}rgen and Walther, Maike },
title = { Real-Time Expressive Rendering of City Models },
booktitle = { Proceedings of the IEEE Information Visualization },
pages = { 245-250 },
year = { 2003 }

Copyright Notice

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

last change: Fri, 14 Aug 2009 11:32:31 +0200