4. Remote Sensing and Photogrammetry

Dem And Dsm Production — Quiz

Test your understanding of dem and dsm production with 5 practice questions.

Practice Questions

Question 1

What is the main purpose of ground filtering during LiDAR DEM production?

Question 2

Which of the following best describes a Digital Terrain Model (DTM)?

Question 3

A canopy height model (CHM) is generated by subtracting which dataset from which?

Question 4

Photogrammetric methods generate 3D point clouds from overlapping 2D images using which process?

Question 5

If a LiDAR survey has an average point density of 15 points/m² over an area of 2 km², approximately how many points are acquired?