8.13.1. Workflow of SfM

Try these first

1. 1.

   What is the first step in the SfM workflow?

   Hint

   Think about what we need before processing the images.

2. 2.

   Which algorithms are commonly used for feature detection?

   Hint

   These algorithms relate to their names like scales and speeds.

3. 3.

   What is the primary function of feature detection in the SfM workflow?

   • To generate dense point clouds
   • To capture images
   • To identify and match unique points

   Hint

   It's about recognizing elements in photos.

4. 4.

   True or False: Content-rich overlap is essential for accurate 3D reconstruction in SfM.

   • True
   • False

   Hint

   Think about what you need to connect dots effectively.

5. 5.

   A researcher is using SfM to document a historical site. The area is mostly flat and devoid of distinctive features. What considerations should they keep in mind to enhance their results?

   Hint

   Think about how to improve imagery in a plain space.

6. 6.

   Consider two images taken with a 30% overlap for SfM processing. Discuss the potential challenges that may arise in point cloud generation.

   Hint

   How could a puzzle with fewer pieces look?