9.1.1. Definition and Concept

Try these first

1. 1.

   What does LiDAR stand for?

   Hint

   Consider the words associated with light and distance.

2. 2.

   What is a point cloud?

   Hint

   Think about the characteristics of 3D measurements.

3. 3.

   What technology is used for high-resolution spatial data acquisition?

   • GPS
   • LiDAR
   • Radar

   Hint

   Think about which technology uses light for measurements.

4. 4.

   True or False: Point clouds are used to represent 2D surfaces exclusively.

   • True
   • False

   Hint

   Remember the dimensionality associated with point clouds.

5. 5.

   Given a scenario where a laser scanning project faces obstacles like trees, describe the challenges this presents for creating an accurate point cloud.

   Hint

   Consider how shadows affect visibility in both physical and data contexts.

6. 6.

   If you wanted to create a detailed 3D model of an archway, explain the steps you would take using laser scanning technology.

   Hint

   Reflect on the need for comprehensive data collection from various perspectives to ensure completeness.