Using Lidar in ArcGIS Amadea Azerki
Agenda
• Introduction to Lidar
• LAS
• Mosaic
• Demonstration
• Q&A
Types of Lidar • Airborne
- Captured from aircraft - Suitable for surface analysis
• Terrestrial and Mobile - Captured from the surface - Suitable for feature location and data validation
d
Lidar Data • Very rich and dense in content
First Return
SecondReturn
ThirdReturn
Last Return
Lidar Data
First Return
SecondReturn
ThirdReturn
Last Return
DSM
• Very rich and dense in content
Lidar Data
First Return
SecondReturn
ThirdReturn
Last Return
DSM
DTM
• Very rich and dense in content
Lidar Data
First Return
SecondReturn
ThirdReturn
Last Return
DSM
DTM
n
Breakline
• Very rich and dense in content
Challenges of Lidar Data
• Huge volumes
• Multiple sources
• Multiple projections
• Varying accuracy
• Multiple representations
LAS Dataset NEW at 10.1
• New data type
• File based
• Treats a collection of LAS files as one logical dataset
LAS Dataset – Interactive Editing
Mosaic Dataset
• Catalog your Lidar data
• Support for NEW at 10.1 - LAS files and datasets - Terrain datasets
• Share internally and online
LAS Versus Mosaic Datasets
File01.las File02.las … File99.las
Multiple Files / Folders Tiled / Overlapping
Extents (Location / Time)
O R G A N I Z E
Manage Serve / Share
Mosaic Dataset
P R O J E C T S
Analyze / Update Data
LAS Dataset 1
LAS Dataset 2
LAS Dataset
Demonstration
Resources • Resource center
• Using LAS files at 10.1
• Lidar classification
• 3D feature extraction
Questions?
Please take a few moments to evaluate this session – Thanks!