Dieter Finkenzeller, Jan Bender and Alfred Schmitt, Feature-based decomposition of façades, In Proceedings of Virtual Concept, 2005

PDF BibTex


Abstract

Due to advances in computer hardware, virtual environments become significantly larger and more complex. Therefore the modeling of virtual worlds, e.g. for computer animation and games becomes increasingly time and resource consuming.

In architectural settings façade features are influenced by the underlying geometrical structure or even by other façade structures, e.g. façade edges made of large stones influence the adjacent walls. To achieve an aesthetic look of the façade adjacent structures must be seamlessly aligned.

The modeling of such structures is a tedious work. With our approach only a few basic parameters are needed to create highly detailed façades. This relieves the designer of the burden of difficult modeling tasks and gives him more high level control.

In this paper we present a strategy for a floor plan representation that permits arbitrary floor plan outlines. This simplifies the roof generation for different roof types in an easy way to achieve an aesthetic goal. Based on the floor plan representation we describe a hierarchical decomposition of architectural façade features. With an order relation on it we represent the interdependencies between the façade features and introduce a geometry generator for them.

With our approach every building in a large VR city will look different but can have a high level on architectural details.


Images

Wall
Wall
Armadillo
Tori

Jan Bender, Dieter Finkenzeller and Peter Oel, HW3D: A tool for interactive real-time 3D visualization in GIS supported flood modelling, In Proceedings of the 17th international conference on computer animation & social agents (CASA), 2004

 

PDF BibTex


Abstract

Large numerical calculations are made to get a prediction what damage a possible flood would cause. These results of the simulation are used to prevent further flood catastrophes. The more realistic a visualization of these calculations is the more precaution will be taken by the local authority and the citizens. This paper describes a tool and techniques to get a realistic looking, three-dimensional, easy to use, realtime visualization despite of the huge amount of data given from the flood simulation process.


Detailed information about this project can be found here:

Real-time 3D visualization in GIS supported flood modelling

Videos

3D visualization of a flood model

3D visualization of a flood model (DivX, Mpeg)

3D visualization of a flood model

3D visualization of a flood model (DivX, Mpeg)

The tool

The animations were generated with the programm "HW3D" that I developed during my research. The tool can visualize terrain surfaces with a high resolution in real-time. It also handles large textures. In order to get a realistic visualization, buildings were reconstructed using the original floor plans of cities. Other GIS data like topography points can also be visualized by the tool.

Further information can be found here:

Real-time 3D visualization in GIS supported flood modelling