Remote sensing

Remote sensing

The process of using aerial sensor technologies to detect and classify objects on Earth both on the surface, and in the atmosphere and oceans by means of propagated signals.

Industry: Earth science

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Remote sensing

A difference image prepared by digitally comparing images acquired at different times. The gray tones or colors of each pixel record the amount of difference between the corresponding pixels of the ...

relief displacement

Earth science; Remote sensing

Geometric distortion on vertical aerial photographs. The tops of objects appear in the photograph to be radially displaced from their bases outward from the photograph's centerpoint.

histogram

Earth science; Remote sensing

A means of expressing the frequency of occurrence of values in a data set within a series of equal ranges or bins, the height of each bin representing the frequency at which values in the data set ...

developing

Earth science; Remote sensing

Chemical processing of an exposed photographic emulsion to produce an image.

tone

Earth science; Remote sensing

Each distinguishable shade of gray from white to black on an image.

roll compensation system

Earth science; Remote sensing

Component of an airborne scanner system that measures and records the roll of the aircraft. This information is used to correct the imagery for distortion due to roll.