4.8.31. Ortho-photos

Try these first

1. 1.

   What is an ortho-photo?

   Hint

   Think about how it differs from a regular aerial photo.

2. 2.

   Name one benefit of ortho-photos.

   Hint

   Consider their applications in mapping.

3. 3.

   What is an ortho-photo?

   • A standard aerial photograph.
   • A corrected aerial photograph with uniform scale.
   • A photograph taken from ground level.

   Hint

   Look for the term that indicates correction and uniformity.

4. 4.

   True or False: Ortho-photos can be used in place of traditional maps.

   • True
   • False

   Hint

   Think about the essential purpose of ortho-photos.

5. 5.

   If an ortho-photo shows a scale of 1:10,000, what does this mean in terms of measurement for an object that is 2 cm on the photo?

   Hint

   Remember the scale helps relate measurements on the photo to real-world sizes.

6. 6.

   If the altitude of the aircraft is increased, how does that affect the scale of the ortho-photo? Explain why.

   Hint

   Think about how distance changes your view of objects.