In: Civil Engineering
List and explain at least three assumptionsthat are
generally considered when using
vertical photographs to derive geometric information of the object
space.
• PHOTOGRAMMETRY : It is the science of obtaining information about Physical objects through the process of recording, measuring and interpretation of photographs
• It can be broadly classified as :
- Aerial photogrammetry
- terrestrial photogrammetry
• Aerial photogrammetry consists of :
- vertical photographs
- oblique photographs
• Assumptions made in vertical photographs to derive geometric information of the objects are mainly discussed below:
- scale of vertical photograph
- ground co-ordinates
- relief displacement
- photographic overlap