How many elements of exterior orientation are there

Reference no: EM132857805

Photogrammetry Or Measurement Science

Question 1) Which of the following orientation procedures requires ground control points?

a. Interior Orientation
b. Relative Orientation
c. Absolute Orientation
d. All of the above

Question 2) Two overlapping vertical photographs were taken from a height of 1020 m above sea level with a 150.0 mm focal length camera. The flight line coordinates of some point a were measured as follows:

	x	y	x'	y'
point a	74.3 mm	-54.3 mm	-25.7 mm	-54.2 mm

If the airbase between photos was 600 m, what is the height of point a above sea level?
a. 9.30 m
b. 900 m
c. 120 m
d. 100 m

Question 3) The parallax difference between the top and base of Century Tower is 600 pixels on a stereopair of digital photos taken from 800 m above ground. The average photo base is 9400 pixels. Approximately how tall is the tower?

a. 48 m
b. 51 m
c. 54 m
d. not enough information given

Question 4) In general, georeferencing is the method by which
a. effects of tilt are removed from aerial photographs
b. image pixels are related to ground/mapping coordinates
c. overlapping photos are combined to form a single photo
d. primitives are digitized in a stereomodel creating a planimetric map

Question 5) In a semi-controlled mosaic, which of the following is true?

a. the photos arerectified
b. control points throughout the area are used
c. a and b
d. a or b

Question 6) In an oblique photo, as the auxiliary tilted photo coordinate ??′ increases, photo scale

a. decreases
b. increases
c. stays the same
d. not enough information given

Question 7) The US mapping entity NGA's initialism stands for

a. The National Geodetic Agency
b. The National Geospatial-Intelligence Agency
c. The National Geographic-Support Administration
d. The National Gravimetric Alliance

Question 8) Which of the following is compensated for in a rectified photo?

a. Relief displacement
b. Tilt of the camera
c. Terrain undulation
d. All of the above

Question 9) How many elements of exterior orientation are there for a single photograph?

a 3
b 5
cd.7 6

Question 10) Given raster elevation data for an area, to get the height of features above ground, one should

a. subtract the DTM from the DSM
b. subtract the DEM from the DTM
c. subtract the DEM from the TIN
d. add the DSM to the TIN

Bonus 1) Successful relative orientation between a stereopair of images implies

a. The use of control points
b. Alignment with a specific ground coordinate system.
c. No y-parallax
d. All of the above

Bonus 2) The air base of a stereopair of vertical photos is 150 m, the flying height above terrain is 900 m, the camera has a focal length of 9 cm, and a 6 cm format in the along-track direction. What is the percent end-lap?

a. 60%
b. 65%
c. 70%
d. 75%

Question 11) Illustrate and briefly describe the alternating LCD shutter glass display system for viewing in 3D on a computer. Include a written description and a figure. Both should include the glasses and display, and how they work to synthesize a 3D model perceived by the operator.

Question 12) Illustrate and briefly describe how a pencil of light is focused using a lens. Make sure to include a description of refraction as it relates to focusing. Note: a pencil of light is a cluster of light rays originating from a point on an illuminated object.

Attachment:- Exrercises2.rar

Reference no: EM132857805

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