Chapter 10 — Question 2

You are shown a picture in which grass looks green and houses are red. What is your
conclusion?

Answer

If we are in the Netherlands, then the conclusion could be that it is a natural
coloured image. So:

Blue band

—

Blue Channel

Green band

—

Green Channel

Red band

—

Red Channel

Now, you are shown a picture in which grass shows as purple and houses are black.
What is your conclusion now?

Answer

The picture is a false colour composite. E.g.,

Red band

—

Blue Channel

Green band

—

Red Channel

Blue band

—

Green Channel

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