8.13.3. Limitations

Try these first

1. 1.

   What is the significance of image quality in SfM?

   Hint

   Think about how a blurry picture looks compared to a sharp one.

2. 2.

   Define 'overlap' in the context of photogrammetry.

   Hint

   Consider how jigsaw puzzles work.

3. 3.

   What is one primary factor that influences the accuracy of SfM?

   • The number of photos
   • The quality of photos
   • The type of camera

   Hint

   Think about how a blurry picture might affect the results.

4. 4.

   True or False: SfM does not require image overlap to function effectively.

   • True
   • False

   Hint

   Remember the jigsaw puzzle analogy.

5. 5.

   You are tasked with creating a 3D model of a large grassy field for a civil engineering project where the feature variation is minimal. Outline a comprehensive plan detailing how to ensure accurate SfM results.

   Hint

   Consider how to introduce more texture or features to the model.

6. 6.

   Analyze a scenario where an actual photogrammetric survey produces less than optimal results due to insufficient image overlap. Discuss countermeasures that could enhance the modeling output without changing the planned survey routes.

   Hint

   Reflect on how to navigate around the limitation of the existing paths.