Practice Measurements by Parallax Bar - 4.12.2 | 4. Relief Displacement of a Vertical Photograph | Surveying and Geomatics
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Knowledge

4.12.2 - Measurements by Parallax Bar

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is parallax?

💡 Hint: Think about how you see objects differently from various viewpoints.

Question 2

Easy

What does a parallax bar measure?

💡 Hint: Consider how we calculate elevation based on seen images.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does the parallax bar measure?

  • The height of objects
  • The distance from the camera
  • The difference in parallax between two points

💡 Hint: Think about what the device is specifically designed to do.

Question 2

True or False: Higher points have less parallax than lower points.

  • True
  • False

💡 Hint: Recall the relationship between height and observed displacement.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A stereo pair photograph shows a known control tower height of 200 meters. If the parallax readings indicate a difference of 5 mm for a new building, what is the estimated height of the building?

💡 Hint: Use the established relationships and examine similarities to find the new height.

Question 2

You measure a parallax of 2 mm for a low hill. If the corresponding known elevation for the reference point is 80 meters, how would you calculate the approximate height of that hill?

💡 Hint: Think about how minor changes in parallax help us calculate differences in height.

Challenge and get performance evaluation