| Abstract | This data set contains imagery from the National Agriculture
Imagery Program (NAIP). NAIP acquires digital ortho imagery
during the agricultural growing seasons in the continental U.S..
A primary goal of the NAIP program is to enable availability of
ortho imagery within one year of acquisition. NAIP provides two
main products: 1 meter ground sample distance (GSD) ortho
imagery rectified to a horizontal accuracy of within +/- 3
meters of reference digital ortho quarter quads (DOQQ's) from
the National Digital Ortho Program (NDOP); and, 2 meter GSD
ortho imagery rectified to within +/- 10 meters of reference
DOQQs. The tiling format of NAIP imagery is based on a 3.75'
x 3.75' quarter quadrangle with a 300 meter buffer on all four
sides. NAIP quarter quads are formatted to the UTM coordinate
system using NAD83. NAIP imagery may contain as much as 10%
cloud cover per tile.
This file was generated by compressing NAIP quarter quadrangle
tiles that cover a county. MrSID compression, with mosaic
option, was used. Target values for the compression ratio
are (50:1) and compression levels(9) are used. |
