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Ground truthIn cartography and analysis of aerial photographs and satellite imagery, the ground truth is the facts that are found when a location is field checked -- that is, when people actually visit the location on foot. Aerial photographs, satellite images, and maps can be deceiving, while the ground truth is immutable. The contents of this article are licensed from Wikipedia.org under the GNU Free Documentation License.
How to see transparent copy 01-04-2007 01:21:04 |
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