CityEngine, LiDAR, building footprints and roof modelling

AmitKokje2

I am aware that CityEngine is not yet supporting LiDAR (LAS/ ASCII/ XYZ etc.) data directly, I managed to import a small set of     LiDAR data as File GDB into CityEngine with attributes (elevation)

I have building polygons footprints data available and imported simultaneously with LiDAR GDB. (image attached ).

With standard arcGIS procedure (spatial join) it is easy to calculate and join the Avg. building height derived from LiDAR data to     building polygons. But that will give very flat roofs for all the buildings.

Is it possible to model exact roofs façades (shape, orientation, aspect and slope) based on LiDAR information available?

Existing methods and rules  in CityEngine are  great to generate roofs at random, but what if we want to replicate existing city

using the available information?.

Is there any method to achieve this using LiDAR information available?

I am more interested in replicating roofs.

Thanks.

CityEngine usage level: Beginner

LiDAR2.JPG

RhettZufelt_1-1644507761021.png

MatthiasBuehler1

Hi !

CityEngine seems to have converted all the LIDAR points into little point markers, but that's not a proper way to work with LIDAR. Actually, LIDAR is not supported at all.

To derive proper Roofs from LIDAR, you'd have to use ArcGIS or better contact a company who is specified in that type of processing.

CityEngine is a procedural modeling application, thus it's specialty is to create geometries based on rule sets you define. CityEngine is not meant to be an application which lets you get 3d buildings from LIDAR data.


Let me know if you have more questions..

matt