Pixel
Landsat is a joint mission of NASA and the US Geological Survey (USGS) and is a part of the National Land Imaging (NLI) Program.
Within the context of satellite imagery and drone usage, the Landsat glossary defines a pixel as ‘an abbreviation of picture element. The minimum size area on the ground that is detectable by a remote sensing device. The size varies depending on the type of sensor,’
Digital surface models (DSM) can be created by pixel-matching of aerial photography.
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