Optimizing Laser Scanner Locations using Viewshed Analysis. MEA 592 Final Project November 20,2009 Jeff Smith. Outline. Project Purpose Laser Scanning Viewshed Analysis Data Methodology Results Discussion Conclusion. Project Purpose.
Optimizing Laser Scanner Locations using Viewshed Analysis
MEA 592 Final Project
Determine the minimum number of scanner observation points for complete coverage of desired area.
Create a 10cm resolution DEM with the goal of measuring erosion and deposition by scanning the area before and after storms.
Saves time in the field if observation points are determined ahead of time.
LiDAR points – multiple returns collected each with x,y,z coordinates
Extract first return points for use in interpolation
Interpolate first return points to create DSM
DSM (showing vegetation and other above bare earth features) used in viewshed analysis.
*All data obtained from in-class data
Area of Interest
coordinates and cumulative viewshed
8 viewsheds to reasonably cover area of interest
Red = Areas of High Multiple Overlap
Green = Area of Single Coverage
Cumulative View – Shows combined coverage of all viewsheds with varying degrees of overlapping.