The document discusses using 3D LIDAR data and multi-agent geosimulation to model urban morphogenesis and assess the impacts of new development scenarios. Key aspects include developing an accurate 3D surface model from LIDAR and cadaster data to analyze visibility and sunlight exposure. Agents representing buildings and urban elements interact based on programmed behaviors and environmental factors. Preliminary results show visibility is an important parameter and LIDAR data provides precision, though computations are time-consuming. Further applications of high-resolution 3D LIDAR data could improve simulation accuracy and dynamic visualization.

1. 3D LIDAR data application for urban morphogenesis multi-agent vector based geosimulation Vitor Silva, Dr. Corinne Plazanet, Cláudio Carneiro, Pr. François Golay 2008 ICCSA conference GEOG-AN-MOD session 2008 July the 2 nd

5. I am a new villa, I want to be close to school and have view to lake SCHOOL SCHOOL Possible locations Here !

6. Satisfaction degree of an agent DS = Weighted average of satisfaction criteria

7. Construction of 3D urban surface model 3D urban surface model LIDAR data , 6-8 pts / m2 Vertical resolution: 15 cm, Horizontal resolution: 20 cm Normalised data height = terrain – building elevation Cadastre (vectorial building footprints) D.T.M. Building model LIDAR roof coverage good insufficient

9. Example of visibility analysis ~ 12 kms ~ 2,5 kms Constrained to narrow angle, due to heavy time consuming computation For each point, 2-5 minutes computation (3’000’000 pixels) Pilot area: 500 × 500 meters

10. Results Simulation without visibility parameter Simulation with visibility parameter Lake Geneva Lake Geneva Lake Geneva

12. Implementation Shp files LIDAR data -> TerraSan Programming -> MATLAB Spatial Analysis -> Manifold GIS Visibility and sunshine analysis

14. Thank you for your attention !

15. Cognitive agents Objects of the environment UML diagram

16. Satisfaction degree (influences)

17. Level of Detail (LOD) definition for 3D city models [aus: Gröger, Kolbe & al.] More resolution, details cadastre, airborne LiDAR laser / LiDAR airborne LiDAR, photogrammetry Photogrammetry and ground LiDAR (building façades), hybrid methods ground LiDAR LIDAR: airborne LIght Detection And Ranging

18. Construction of 3D urban surface model

19. Visibility analysis from top and ground surfaces

20. Visibility analysis from side surfaces

21. … from side surfaces Evaluate the potential height of a future new building …