4.12 - Determination of Height from Vertical Aerial Photographs
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Practice Questions
Test your understanding with targeted questions
What is a stereo-pair?
💡 Hint: Think about how we perceive depth using two eyes.
Define parallax.
💡 Hint: Consider how you see objects from different positions.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of using a parallax bar in aerial photography?
💡 Hint: Think about what it measures during the stereo image process.
True or False: A higher elevation results in a smaller parallax measurement.
💡 Hint: Consider the relationship between height and parallax.
3 more questions available
Challenge Problems
Push your limits with advanced challenges
Given a known control point with an elevation of 100m, you measure a parallax difference of 8 mm at two points. Calculate the estimated height of the unknown point using heights and parallax relations.
💡 Hint: Look closely at the formula relating height and parallax before plugging values in!
If a photographer captures stereo-pairs with a tilt that you suspect may influence parallax measurements, outline how you can mitigate these errors.
💡 Hint: What adjustments could you make to account for tilt in your measurements?
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