LIDAR Essentials

LIDAR Essentials

ASFPM is partnering with GeoCue Corporation to present
Understanding one of the most important datasets that influence flood map accuracy
an educational series consisting of four one-hour webinars.

Webinar 1: An Overview of LIDAR

September 10, 2012 @ 3:00pm ET

  • An overview of airborne LIDAR technology (How it Works)
  • LIDAR Parameters (Density, Resolution, Precision, Network and Local Accuracy)
  • Datums and Coordinate Reference Systems
  • Accuracy considerations
  • ASPRS LIDAR data format, LAS
  • Uses of LIDAR Data – Data applications

Presentation Slides for Webinar 1: An Overview of LiDAR

Sample Dataset for Webinar 1

Sample dataset 1 (.zip file containing ASFPM_1.las)
Download an evaluation copy of LP360 here:


Webinar 2: Specifying LIDAR Collection Projects

October 22, 2012 @ 3:00pm ET

  • Product-driven specification methods
  • How performance specifications affect project cost
  • Cost/Performance trade-offs
  • “Buy-ups” – cost/benefit considerations
  • Breakline (e.g. “hydro-flattening”) considerations
  • Specifying data deliverables
  • Specifying data accuracy
  • Specifying data formats and media
  • Data Rights
  • Monitoring Projects

Presentation Slides for Webinar 2: Specifying LIDAR Collection Projects


Webinar 3: LIDAR Acceptance and QC

November 9, 2012 @ 3:00pm ET

  • What is the cost of not doing QC?
  • A discussion of performance parameters
  • Importance of independent ground control
  • Data delivery strategies
  • QC Program Strategies
  • Quantitative Checks
  • Vertical accuracy testing – relative and absolute
  • Qualitative checks
  • Communicating issues

Presentation Slides for Webinar 3: LIDAR Acceptance and QC


Webinar 4: Using LIDAR Data

December 10, 2012 @ 3:00pm ET

  • Basic 3D visualization
  • Intelligent data thinning – Model Key Points
  • Generating derived products (for example, gridded elevation files)
  • Generating contours
  • Adding breaklines – enhanced elevation models
  • Advanced topics – Adding value via local data extraction

Presentation Slides for Webinar 4: Using LIDAR Data



ASFPM Training & Knowledge Center:

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(608) 828-3000