d. Camouflage detection film was designed specifically to detect green
colored artificial camouflage by recording it as blue to blue-green in
contrast to a red recording of natural vegetation.
It combines the
advantages of both IR and color films. The structure of the film is such
that high IR reflective objects-natural vegetation-record as red; low IR
reflective objects record as blue or green.
FART C:
BASIC IDENTIFICATION FACTORS
1. There are five basic factors an IA uses to help in identifying an object
or installation found on imagery:
size, shape, shadow, shade, and
surroundings, or the Five Ss.
2. Size of an object can readily aid in its identification and also in the
identification of surrounding objects. If the scale of a vertical image is
known or can be determined, it is a fairly simple process to take a
measurement and determine the actual size of the object to be identified.
In the identification of equipment, you will find accurate measurements are
essential.
Not only can you use accurate measurements to identify an
object, you can also use relative size (Figure 1-15).
If you know the
object on the right is a house, by comparing the size of the center object
to the known object (the house), you should determine if it is a garage or
large storage building. If you have made this deduction, you should decide
the object on the left is a small storage shed or an outhouse.
Figure 1-15.
Size.
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IT 0649
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