Chapter 6 - GIS Fundamentals Final

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created 10 months ago by Abby_Bohman
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GIS Fundamentals
Chapter 6
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1

Positive attributes of images as data sources?

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2

What is the electromagnetic spectrum, what are principle wavelength regions?

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3

Spectral reflectance curve? Draw typical curves for vegetation and soil through the visible and infrared portions of the spectrum.

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4

Describe structure and properties of digital sensors in digital aerial cameras

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5

Basic components of a camera used for taking aerial photographs?

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6

Most commonly used camera formats for aerial photography and relative advantages?

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7

Major sources of geometric distortion in aerial images, and why?

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8

Other sources, minor, of geometric sources in aerial images?

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9

A tall building is recorded on two vertical aerial photographs, first photograph at a nominal scale of 1:20,000, second photograph at a nominal scale of 1:40,000. The building is near the edge of both photographs, and terrain is level throughout the photograph. Which image will show a larger displacement, d, as shown in figure 6-23?

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10

Describe stereo photographic coverage, and why it is useful.

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11

What is parallax, and why is it useful?

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12

Describe the basic process of terrain distortion removal?

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13

Why do the buildings lean in different directions in the images below?

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14

What is photointerpretation, and what are the main photographic characteristics used during interpretation?

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15

How are images from satellite scanners different from photographs? How are they similar?

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16

Describe and contrast the Landsat ETM+ , SPOT HRV, Pleiades, and World-view-1 satellite imaging systems.

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17

What is LiDAR? What type of information can LiDAR produce?

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18

What are three criteria used in selecting the type of images for spatial data development?

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