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Remotely Sensed Imagery and Color Composites
The large mountain icon will zoom in and the small mountain icon will
zoom out.
10. Zoom around the image, paying attention to some of the city, landscape,
and water areas.
Question 10.1 What wavelength bands were placed into which color guns?
Question 10.2 Why are the colors in the image so strange compared
to what we’re normally used to seeing in other imagery (such as Google
Earth or Google Maps)? For example, why is most of the landscape red?
Question 10.3 In this color composite, what colors are the following
features in the image being displayed as: water, vegetated areas, and urban
areas?
11. Reopen the image, this time using band 3 in the red gun, band 2
in the green gun, and band 1 in the blue gun (referred to as a 3-2-1
combination). Once the image reloads, pan and zoom around the image,
examining the same areas you just looked at.
Question 10.4 What kind of composite did we create in this step? How
are the bands being displayed in this color composite in relation to their
guns?
Question 10.5 Why can we not always use this kind of composite (from
Question 10.4) when analyzing satellite imagery?
12. Reopen the image yet again, this time using band 2 in the red gun,
band 1 in the green gun, and band 3 in the blue gun (referred to as a
2-1-3 combination). Once it reloads, pan and zoom around the image,
examining the same areas you just looked at.
Question 10.6 Once again, what kind of composite was created in this
step?
Question 10.7 How are vegetated areas being displayed in this color
composite (compared to the arrangement in Question 10.4)?
10.2 Examining Color Composites and
Color Formations
1. Reopen the image one more time, returning the 4-3-2 combination
(band 4 in the red gun, band 3 in the green gun, and band 2 in the blue
gun). You can close the other images, as we’ll be working with this one
for the rest of the lab.
Remotely Sensed Imagery and Color Composites
The large mountain icon will zoom in and the small mountain icon will
zoom out.
10. Zoom around the image, paying attention to some of the city, landscape,
and water areas.
Question 10.1 What wavelength bands were placed into which color guns?
Question 10.2 Why are the colors in the image so strange compared
to what we’re normally used to seeing in other imagery (such as Google
Earth or Google Maps)? For example, why is most of the landscape red?
Question 10.3 In this color composite, what colors are the following
features in the image being displayed as: water, vegetated areas, and urban
areas?
11. Reopen the image, this time using band 3 in the red gun, band 2
in the green gun, and band 1 in the blue gun (referred to as a 3-2-1
combination). Once the image reloads, pan and zoom around the image,
examining the same areas you just looked at.
Question 10.4 What kind of composite did we create in this step? How
are the bands being displayed in this color composite in relation to their
guns?
Question 10.5 Why can we not always use this kind of composite (from
Question 10.4) when analyzing satellite imagery?
12. Reopen the image yet again, this time using band 2 in the red gun,
band 1 in the green gun, and band 3 in the blue gun (referred to as a
2-1-3 combination). Once it reloads, pan and zoom around the image,
examining the same areas you just looked at.
Question 10.6 Once again, what kind of composite was created in this
step?
Question 10.7 How are vegetated areas being displayed in this color
composite (compared to the arrangement in Question 10.4)?
10.2 Examining Color Composites and
Color Formations
1. Reopen the image one more time, returning the 4-3-2 combination
(band 4 in the red gun, band 3 in the green gun, and band 2 in the blue
gun). You can close the other images, as we’ll be working with this one
for the rest of the lab.