Aerial Photo TSYH 3340

Upon successful completion, the student will be able to:

Module 1 - Introduction to Aerial Photography

• List the five essential requirements for producing an air photo.
• List six advantages of using air photos.
• List the three factors used to determine the orientation of flight lines.
• List the four factors used to determine the spacing of flight lines.

Module 2 - Aerial Photo Indexing

• Identify the individual components of an air photo number including those flown for the BC government and federal government.
• Explain how specific air photos are selected from an air photo index.
• List common sources for obtaining air photos at the local and provincial levels.

Module 3 - Characteristics of Aerial Photos

• Discuss the advantages and disadvantages of wide-angle photography to narrow-angle photography.
• Discuss the advantages and disadvantages of panchromatic and infrared film.
• List the three classifications of aerial photos based on the camera angle.
• List the four classifications of aerial photos based on the camera focal length.
• List eight characteristics of good aerial photos.

Module 4 - Introduction to the Photographic Process

• Describe the process of creating images on film.
• List the factors affecting the quality of a photographic image.
• Describe the process of developing photographic films.

Module 5 - Geometry of Single Vertical Aerial Photos

• Define the three types of photo centres.
• Define the terms: camera angle, focal length, angle of coverage, distortion and displacement.

Module 6 - Aerial Photo Scales, Measurements and Calculations

• Calculate the distance on air photos.
• Calculate ground distance given photo distance and photo scale.
• Calculate the scale of an air photo given the distance between two points on the ground and the same two points on an air photo.
• Calculate the scale of an air photo given the camera focal length and the flying height of the aircraft.

Module 7 - Stereoscopy in Aerial Photography

• Define the theory of stereoscopy.
• Discuss the advantages and disadvantages of the lens and mirror stereoscopes.
• List the basic rules of care for a stereoscope.
• List the steps to align vertical aerial photos.
• List five causes of eye fatigue when viewing air photos.

Module 8 - Geometry of Paired Aerial Photographs

• Calculate the height of objects on an aerial photo.
• Measure absolute parallax given a pair of consecutive aerial photos.

Module 9 - Slope Estimation from Aerial Photos

• Use objective and qualitative methods to estimate slope from aerial photos.
• Estimate the vertical exaggeration of an aerial photo.

Effective as of Fall 2003