1

Topic 5: Geometry ofAerial Photographs and Types

of Distortion/Displacement

Chapters 2 and 3 Avery and BerlinChapter 3: Lillesand and Keifer

Definition:

Specifications

1. Scale

2. View

3. Directions

4. Map-like quality

5. Measurements

2

Defined

Low vs. highHigh Oblique

Low Oblique

1. Area

2. Lower

3. View

4. Reveal

BUT?

Fiducial marks

3

Principal Point

Nadir

Isocentre

4

Causes of distortion and displacement:

1.2.3.4.5.6.

Sony DSC W300

Determining Lens Distortion

5

6

So what?

1.

2.