.. _aster2asp:
aster2asp
---------
The ``aster2asp`` tool takes as input a directory containing ASTER
images and associated metadata, and creates TIF and XML files that can
then be passed to ``stereo`` to create a point cloud.
An example for how fetch the data and use this tool is given in
:numref:`aster`.
The tool can only process Level 1A ASTER images. The input should be a
directory containing visible and near-infrared (VNIR) nadir (Band3N) and
backward (Band3B) images, together with plain text files containing
values for the satellite positions, sight vectors, longitudes,
latitudes, lattice points, and radiometric correction tables. These
files are described in :cite:`abrams2002aster`.
Usage::
aster2asp -o