For each of the sixteen ASTER images, a spectral subset is per-
formed on a band by band base for each of the nine bands (vis-
ible and visible near infrared). A subset is performed on each
image and the image is rotated based on the rotation angle
of the satellite, and to get the true North direction of the
image. Gram Schmidt sharpening is performed on each of
the SWIR bands (bands from 4 to 9) to change their spatial
resolution from 30 to 15 m. After performing the Gram
Schmidt sharpening, a difference in pixels and rows between
VNIR and SWIR appears so the difference is cut between
them for each band at each image, to obtain the same pixel
and row numbers. Using a buffer zone of 25 km, each band
is cut and subset for the sixteen images using the buffer zone
around the road from both sides (which is believed to be the
area influenced by the road)