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Procedural Modelling of Plant Scenes

Procedural Modelling of Plant Scenes. A research project for Computer Science Honours 2004. Presented by: Kim R 2 Supervisors: Shaun Bangay Adele Lobb. Project Aims. Model a forest scene Procedural modelling L-Systems. Forest Scenes - Issues. Many different tree species present.

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Procedural Modelling of Plant Scenes

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  1. Procedural Modelling of Plant Scenes A research project for Computer Science Honours 2004 Presented by: Kim R2 Supervisors: Shaun Bangay Adele Lobb

  2. Project Aims • Model a forest scene • Procedural modelling • L-Systems

  3. Forest Scenes - Issues Many different tree species present

  4. Forest Scenes - Issues Variation within each species

  5. Forest Scenes - Issues • Interaction: • Symbiosis

  6. Forest Scenes - Issues • Interaction: • Competition

  7. Forest Scenes - Issues Varying detail level depending on distance from viewer

  8. Solution • L-Systems • Procedural Modelling

  9. L-Systems • Formal set of rules and symbols • Originally described cellular growth • Rules applied iteratively to start sequence • Graphics: symbols describe drawing paths or end graphics (such as a leaf)

  10. Simple L-System Example • F [ & + F] F[ - > F] [- > F] [& F]

  11. Stochastic L-Systems • Several rules for each symbol • Rules chosen based on probability • Create different plants using same L-System • Simulate environmental effects

  12. Stochastic L-System Example

  13. Procedural Modelling • Use procedure to generate all needed geometric primitives • Store complex tasks in procedure • Detail level • Shaders • Internal animation

  14. This Project • Create a procedural modelling language • Similar in syntax to Renderman shading language or MEL • Include: • Tree species/type • Conditions (for L-System) • Detail level (distance from viewer)

  15. Questions?

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