Shared Flashcard Set

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8107 Final Review
Cartography GIST 8107 Review
29
Other
03/03/2012

Term
 CPP
Definition
 Conjegate Principal Point
Term
 NTS
Definition
 National Topographic Series
Term
 FMC
Definition
 Forward Motion Compensation
Term
 Node
Definition
 An intersection
Term
 Perspective Center
Definition
 Center of the camera lens
Term
 Photogrammetry
Definition
 The art and science of measuring on photographs
Term
 Space Rod
Definition
 Metal Rod representing virtual lighting in analog
Term
 LiDAR
Definition
 Laser Range Finder used to create a DEM
Term
 Newton Ring
Definition
 A type of ortho issue caused by scanning. Looks like a rainbow
Term
 AT
Definition
 Aerial Triangulation. Calculates position and rotation of all photos
Term
 Co-planarity
Definition
 condition where 2 image points and 2 perspective centers and ground point creates a plane
Term
 A client requires 1:10000 photography to cover a rectangular area 15.96km (E-W) by 9.12 (N-S) The aerial photo is 228 mm x 228 mm.Which would be the optimum flight direction
Definition
 North South
Term
 A client requires 1:10000 photography to cover a rectangular area 15.96km (E-W) by 9.12 (N-S) The aerial photo is 228 mm x 228 mm.How many neat models are needed to cover the area
Definition
 100
Term
 A client requires 1:10000 photography to cover a rectangular area 15.96km (E-W) by 9.12 (N-S) The aerial photo is 228 mm x 228 mm.How many photographs are needed to cover the area?
Definition
 110
Term
 A client requires 1:10000 photography to cover a rectangular area 15.96km (E-W) by 9.12 (N-S) The aerial photo is 228 mm x 228 mm.Compute the stereomodel size
Definition
 2280x2280
Term
 A client requires 1:10000 photography to cover a rectangular area 15.96km (E-W) by 9.12 (N-S) The aerial photo is 228 mm x 228 mm.Calculate the number of frames
Definition
 10x10
Term
 What are 3 terrain and seasonal considerations that must be considered when planning an aerial photograph
Definition
 Terrain may cause stereo deadSpring Leaf free photographySun Angle
Term
 Why is the sun angle an important consideration when taking air photos
Definition
 Shadows too long poor exposure and difficult to see.Sun too high --> Specular reflection
Term
 List different uses for a DEM
Definition
 contours, orthophotos, volumes, viewsheds, cross-sections, 3d modeling
Term
 Why do we need to colour balance aerial photography when creating orthophotos
Definition
 Sun always exposes one side of model more than the other so when mosaiced the images look patchy.
Term
 Why do bridges sometimes look distorted in orthophotos
Definition
 They are elevated and get projected onto the DEM
Term
 Calculate the following photoscales.Photo Distance Ground Distance2.25" 1112'
Definition
 1" = 494'
Term
 Calculate the following photoscales.Photo Distance Ground Distance12cm 1320m
Definition
 1:11000
Term
 Calculate the following photoscales.Photo Distance Ground Distance152mm 1205m
Definition
 1:7927 1:8000
Term
 Calculate the following photoscales.Photo Distance Ground Distance305mm 4231m
Definition
 1:13872 1:15000
Term
 Problems that may arise during the production of orthophotos:Geometric
Definition
 slight shifts from one ortho to the next
Term
 Problems that may arise during the production of orthophotos:Colour Balance
Definition
 changes in exposure from one side to another
Term
 Problems that may arise during the production of orthophotos:hair, scratches
Definition
 problems caused by developing and scanning film
Term
 Problems that may arise during the production of orthophotos:Elevated features
Definition
 Trees and buildings and bridges leaning
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