how to get the most out of lidar data
TRANSCRIPT
OverviewThe game plan >
● What can you do with your point clouds in FME?○ Demo: DTM and DSM
● Example: LiDAR for 3D city modelling
● Example: Calculating a view of the water○ Demo: Viewshed
analysis● How to integrate a 3rd-party
library into your FME workflow○ Demo: LAStools in
action● Conclusion and Q&A
The problem with point clouds
● They’re huge.● They’re kinda complicated.● It’s hard to integrate them
with other data.
Translate between data formatsLAS (plus LAZ, zLAS)XYZASTM E57Oracle SpatialPointools PODRIEGL Laser Scan Database Terrasolid TerraScanZ+F LaserControl ZFSMinecraftCARIS Spatial ArchiveAutodesk ReCapCesium (in progress)
Ras
ter
Form
ats
Vec
tor
Form
ats
Demo
Merge component values from one point cloud to another.
Sort a point cloud by the values of components.
Performance● 17,000,000,000 points generated from
77,000,000 linear features and compared against a
102,000 x 76,000-pixel raster in just 24 hours
● Parallel Processing: http://fme.ly/parallel
The Project
● The City of Surrey developed a 3D model in ArcGIS by combining LiDAR data and vector layers using FME.
● The model is used by city planners to visualize new developments and ensure their compatibility with existing neighbourhoods.
The Project● Identify which land parcels in New
Zealand have a view of the water.
● Use this and other factors to determine property value.
● 1.5 million parcels and 77 million lines of sight result in over 17 billion DEM interpolation points
Integrating third-party tools
in your FME workflow
By building a custom transformer, you can read, write, and process data however you want.
blog.safe.com http://fme.ly/3rdparty
LASpublishhttp://potree.org/ - Potree is a WebGL based viewer for large point clouds by Markus Schütz
http://fme.ly/surrey
Summary“Something this amazing should not be this easy.”
-Don
● What can you do with your point clouds in FME?○ Demo: DTM and DSM
● Example: LiDAR for 3D city modelling
● Example: Calculating a view of the water○ Demo: Viewshed
analysis● How to integrate a 3rd-party
library into your FME workflow○ Demo: LAStools in
action● Conclusion and Q&A
Free Candy(Resources)
● Blog posts: 3rd party integration, LiDAR○ blog.safe.com
● Join the FME Community○ knowledge.safe.com
● Live FME Training (Free!)○ training.safe.com