3D Differencing [ Video Tutorial ]

Wax Lake Delta, Louisiana, USA 2013
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Overview

University of Texas Jackson School of Geosciences logo Airborne lidar data of Wax Lake Delta, Louisiana, USA, a delta prograding into Atchafalaya Bay, Gulf of Mexico. Rasters were produced from the 2013 Airborne lidar data wherein trees and vegetation were removed. The data were then rasterized and saved to geotiff using the software package CloudCompare.

Note: The point cloud data were not initially classified for vegetation removal. As such, the investigators removed vegetation to create the raster datasets. The removal process will not match the removal from the classification performed on the data later. The later classification is uploaded to OpenTopography. To get the same rasters as the ones available on OpenTopography, start with the complete unclassified point cloud and follow the methods described in the full metadata file.
Reference Dataset
Total points: pts
Survey Area: km2
Point Density: pts/m2
Compare Dataset  
Total points: pts
Survey Area: km2
Point Density: pts/m2
Select area of data to process  
 

1. 3D Differencing Datasets and Coordinate System  


  Reference dataset:
  Compare dataset:  
Dataset:
Survey Date:
Horizontal Coordinates:
Vertical Coordinates:
Units:
Data Selection Coordinates (Select an area on map)
  Manually enter selection coordinates (in the horizontal coordinate system listed above)  

  Choose Return Classification    
  Ground

2. DEM Generation (TIN)  

  Grid Resolution (Default = 1.0 meter)
  Max. triangle size (Default 50 units)

3. Window Size  

Window Size  

4. Visualization  

  Generate additional hillshade images from DEMs for reference and compare datasets.

Altitude of the light:  (in range: [0-90] degrees)
Azimuth of the light:  (in range: [0-360] degrees)

Job Description & Notification

These options allow users to describe and keep track of their jobs. Information entered below is saved along with other job parameters in your personal myOpenTopo dashboard (available only to registered OpenTopography users).

Email address
for notification upon completion of processing
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More options
By accessing data via OpenTopography you agree to acknowledge OpenTopography and the dataset source in publications, presentations, and other materials produced using these data:
Data Citation     |     Use License: Not Provided