USGS

Isis 2 Documentation


lev1tolev1 Documentation

lev1tolev1 - Match two level 1 images
This program can be used to transform one level 1 image
to match another level 1 image.  For example, a level 1
MOC red image can be transformed into the same geometry
as a level 1 MOC blue image.  Likewise, a level 1 Viking
image can be transformed into the same geometry as a
level 1 MOC red image.  Of course the target for both
level 1 images must be the same.

The ability to make ths transformation is useful for
geometrically calibrating instruments or co-registering
different data sets.

The program outputs a transformation file (tfile) which
must be used as input to the "geom" program along with
the image to transform.

PROGRAMMER: Jeff Anderson, USGS, Flagstaff, Az

ParmDescriptionDefault
FROM
Input "level 1" cube name
to transform
(default extension is .cub)
NONE
FROM2
Input "level 1" cube name
to match
(default extension is .cub)
NONE
TFILE
Transformation file
(no default extension)
tfile.dat
RETEST
Grid spacing for retesting
--

ADDITIONAL NOTES:

ParmDescription
FROM
Input cube file name.  If the file extension is omitted,
then ".cub" will be assumed. This cube will be
transformed to match the cube specified by FROM2.
FROM2
Input cube file name.  If the file extension is omitted,
then ".cub" will be assumed. The cube specified by FROM
will be transformed to match this cube.
TFILE
This is the name of the transformation file (tfile) to be
generated.  The input cube (FROM), along with this tfile
must be input into the program "geom" in order to produce
the new level 1 cube.
RETEST
This parameter is used to request retesting of tiles
whose corners and center value map off the input image.
If this parameter is set the program will retest the
tile searching for valid data every RETEST pixels
across and down the tile.  This parameter should be
used if the data contains fine pieces that extend
outside a box region.  Only values equal to 4 to the
n power can be used for tilesize (1, 4, 16, 64, ....).

Last updated: Jan 31 2005
File: pdfs2.html

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