Computational geometry: an introduction
Computational geometry: an introduction
The algorithmic beauty of plants
The algorithmic beauty of plants
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Advanced RenderMan: Creating CGI for Motion Picture
Advanced RenderMan: Creating CGI for Motion Picture
Template-based generation of road networks for virtual city modeling
VRST '02 Proceedings of the ACM symposium on Virtual reality software and technology
Real-time procedural generation of `pseudo infinite' cities
Proceedings of the 1st international conference on Computer graphics and interactive techniques in Australasia and South East Asia
Procedure models for generating three-dimensional terrain
SIGGRAPH '80 Proceedings of the 7th annual conference on Computer graphics and interactive techniques
Remote Interactive Walkthrough of City Models
PG '03 Proceedings of the 11th Pacific Conference on Computer Graphics and Applications
√2 Subdivision for quadrilateral meshes
The Visual Computer: International Journal of Computer Graphics
Mechanisms for multimodality: taking fiction to another dimension
AFRIGRAPH '07 Proceedings of the 5th international conference on Computer graphics, virtual reality, visualisation and interaction in Africa
Interactive procedural street modeling
ACM SIGGRAPH 2008 papers
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The formation of informal settlements in and around urban complexes has largely been ignored in the context of procedural city modeling. However, many cities in South Africa and globally can attest to the presence of such settlements. This paper analyses the phenomenon of informal settlements from a procedural modeling perspective. Aerial photography from two South African urban complexes, namely Johannesburg and Cape Town is used as a basis for the extraction of various features that distinguish different types of settlements. In particular, the road patterns which have formed within such settlements are analysed, and various procedural techniques proposed (including Voronoi diagrams, subdivision and L-systems) to replicate the identified features. A qualitative assessment of the procedural techniques is provided, and the most suitable combination of techniques identified for unstructured and structured settlements. In particular it is found that a combination of Voronoi diagrams and subdivision provides the closest match to unstructured informal settlements. A combination of L-systems, Voronoi diagrams and subdivision is found to produce the closest pattern to a structured informal settlement.