Practice Overlap (4.8.20) - Photogrammetry Surveying

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8 questions

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6 sample questions

Question 1.
What is meant by overlap in aerial photogrammetry?
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Think of multiple images showing the same region.
Question 2.
Define longitudinal overlap.
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Consider the direction of flight.
3Question 3.
What is the minimum required longitudinal overlap for effective data collection?
- 20%
- 50%
- 60%
- 70%
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Think of how many images overlap to prevent gaps.
4Question 4.
True or False: Lateral overlap occurs between successive photographs along the same flight line.
- True
- False
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Consider the positioning of photographs.
Question 5.
A survey requires creating a detailed topographic map of a hilly region. If the initial plan only allows for 40% longitudinal overlap, discuss the potential impacts and propose adjustments.
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Think about the importance of full coverage.
Question 6.
Calculate the number of required photographs for a flight line length of 2000 meters and a necessary airbase of 100 meters with the desired overlap percentage.
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Consider how far each photo needs to cover.

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