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added examples of New Orleans
'''Remote sensing''' is the [[science]] and art of obtaining information about an object, [[area]], or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under investigation.
'''Remote sensing''' is the [[science]] and art of obtaining information about an object, [[area]], or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under investigation.
==Examples==
The following illustrates how remote sensing can be used to detect areas of flooding that would normally be missed by ordinary photography; in this case the area is New Orleans before and after the imapct of [[Hurricane Katrina]] on August 28, 2005.
<center>
<gallery perrow="5">
File:NewOrleansAug2005.JPG|New Orleans, Louisiana, August 2005; the images here were taken with the Landsat satellite and run through the ERDAS Imagine program.
File:NewOrleansAug2005Rastor.JPG|Same image but with the RGB rastors set for 4,5,7 to highlight water areas.
File:NewOrleansSept2005.JPG|New Orleans, Louisiana on September 2, 2005 following damage done by Hurricane Katrina on August 28.
File:NewOrleansSept2005Rastor.JPG|Same image, with the RGB rastors were set to 4,5,7, which has picked up the presence of water remaining within what should be dry land.
</gallery></center>
== See also ==
== See also ==