Lab 4. Create 3D Models from LiDAR Data and Explore 3D Models in ArcGIS Pro
Objectives:
• To get familiar with LiDAR data and 3D data
Data:
• Optional: Use a LiDAR Scanner to scan a small space in a building and bring the LiDAR data to lab computers. A video tutorial is available at • Create 3D Models from LiDAR Points fo... .
• Download the Demo.ply file from https://github.com/xbwei/Data-Mining-...
Steps:
1. View the raw data of the Demo.ply file.
2. Open MeshLab, load the Demo data and convert the data into a 3D STL file. You can download and install MeshLab from https://www.meshlab.net/
2.1. In File/Import Mesh, choose the demo file.
2.2. Go to Filters/Points/Compute normal for point sets.
2.3. Accept the default setting and apply.
2.4. In Filters/ Remeshing…/ and choose Screened Poisson
2.5. Accept the default setting and apply.
2.6. Export the created 3D model into an STL file.
3. Open MeshMixer and load the 3D STL file. Polish the 3D model if necessary. Export the data as an OBJ file. You can download and install MeshMixer from https://meshmixer.com/.
4. Optional: If you don’t have MeshLab or MeshMixer, you can download the 3d_model.obj from https://github.com/xbwei/Data-Mining-... and continue the lab.
5. Open ArcGIS Pro and create a Local Scene project.
6. In Analysis, open the toolbox and search the Import 3D Files tool. Convert the OBJ file to a 3D feature.
7. Open and check the attribute table of the imported 3D model.
8. Open and check the property/source of the imported 3D model.
9. Right-click the imported 3D model and choose Zoom to Layer. On the menu bar, in the Feature Layer tab, change the Symbology/ Color of the 3D model.
10. Try the Map/Measure tool to measure the size of the imported 3D model.
11. Try the Analysis/Exploratory 3D Analysis/ Slice tool to view the inside of the 3D model.