5.1.9. Example 4.9

Try these first

1. 1.

   What does GCP stand for in aerial mapping?

   Hint

   Remember the reference points used in geo-referencing.

2. 2.

   Why are lateral control points important?

   Hint

   Consider their positioning in overlaps.

3. 3.

   What is the purpose of Ground Control Points (GCP) in aerial mapping?

   • A) To determine the color of photographs
   • B) To geo-reference aerial images
   • C) To adjust brightness of image

   Hint

   Think of their purpose in relation to accuracy.

4. 4.

   True or False: Minor Control Points (MCP) are selected at random.

   • True
   • False

   Hint

   Remember the purpose of these points.

5. 5.

   Aerial photographs were taken with a camera having a 25 cm focal length at a height of 1500m. If the ground elevation is 100m, calculate the scale of the photograph.

   Hint

   Use the formula for scale calculation.

6. 6.

   Discuss the differences between block and strip triangulation and how these methods affect the overall accuracy in aerial mapping.

   Hint

   Focus on the internal strengths and computational advantages.