Aerial Photography and Remote Sensing
Height Measurement
For each problem, write the equation you are using, your measurements from the photo, the value for each variable and how it was derived and the calculations needed to reach your final answer. Every number should include the proper units. Estimate measurements to 0.1 mm or 1/64 in. if you can.
1. On one of the BSU photos, use relief displacement with the single photo method to find the height of Tamarack Hall. The height of the camera above the ground is 3600 ft. Tell me the photo number you used.
2. Use the shadow from Tamarack Hall to measure its height. The scale of the photo is 1:7200. Assume the streets of Bemidji run N—S to measure the azimuth of the sun.
3. On one of the Foston photos (flying height H=1800’), find three buildings near the edge of the photo with significant relief displacement and measure their heights using the single photo method. Tell me the photo number, a brief description of the each buildings, its location and its function.
Interpretation
Using page of small images, for images 1, 3 and 7. In each image identify the selected features and answer any questions about the feature. Use at least three elements of image interpretation (p 191) shape, size, pattern, tone, texture, site, shadows, association, resolution to describe how you made each interpretation and the clues used to answer the questions. Example: “This is a parking lot because of the smooth texture, the dark gray tone, the pattern of white lines, and the association with a shopping complex” (5 pts each, except 10 pts for 7b : 3 pt for good ID but no description, 4 pt. description using key terms, but not complete, 5 pt. complete description using key terms)
image #1.
a. Identify and describe the three quadrilaterals on the left. How are they different? How are they similar?
b. Identify and describe the spotted area on the right.
c. the spots are not all the same, what additional detail about them does this tell you?
image #3
a. Identify and describe the large, irregular feature in the middle. Do you think it is natural or man made?
b. Identify and describe the area just below it (between the feature in a. and the straight linear
feature.)
image #7
a. The entire frame is …… How do you know?
b. There are at least three different surface materials that show up repeatedly in this image. What are they?