hilev4 Documentation

HILEV4 - Add HPF mosaic and LPF mosaic for Mars 1:500k mapping
The input to LEVEL4 is the 51x51 HPF mosaic and the 251x251 HPF
mosaic (output of HILEV3B processing sequence).  A 51x51 low pass
filter is run on the valid pixels of the 251x251 HPF mosaic, the
output of the filter is then added to the 51x51 HPF input mosaic.
The keyword LEVEL is updated with the value 4 in the labels area
of the final mosaic.  The purpose of this program is to create
the final tone matched output mosaic of a Mar 1:500k high
resolution quadrangle in the sinusoidal equal-area projection.

Programs that this procedure runs are the following:

BOXFILTER - runs a 51x51 low pass filter on the valid pixels of
  the 251x251 high pass filter mosaic

ADD - combines the 51x51 low pass filter mosaic and the 51x51
  high pass filter mosaic

LABELS - update PRODUCT_ID keyword with MTM quadrangle name, and
  LEVEL equal 4.

PROGRAMMER: Tammy Becker, Ella Mae Lee, U.S.G.S., Flagstaff, AZ

File names of HILEV3B
   mosaics
ex: mos251.cub
    mos51.cub

NONE

Final output mosaic name

NONE

Work disk
Default
  current directory

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ADDITIONAL NOTES:

Parm	Description
FROM	These are the filenames of the 51x51 high pass filter image mosaic and the 251x251 high pass filter image mosaic created from the HILEV3B processing sequence. A 51x51 low pass filter will be run on the 251x251 high pass filter mosaic before adding it to the input 51x51 high pass filter image mosaic. The order of these files does not matter because the procedure will identify the mosaics by the LEVEL keyword in the labels.
TO	Final output mosaic name for the tone matched sinusoidal equal-area mosaic Default extension is .cub
WORK	User specified work disk where temporary files will be created. NOTE: A workfile will be created on the specified work disk and will be deleted. The workfile is the 51x51 low pass filter mosaic. Default current directory