USGS

Isis 2 Documentation


m9filt Documentation

M9FILT - Mariner 9 Filtering
PROGRAMMER:  MARS1::KEH (Ken Herkenhoff, Caltech)
This procedure finds and removes reseaux, corrects missing lines (if
necessary), and filters out bit errors in Mariner 9 television imaging
data.  If the default for NLINES is not changed, missing line
correction will not occur.  Intermediate results of each step are saved
on disk in case of errors until successful creation of the filtered
image (FROM + X.cub).  The following programs are run in this
procedure:  FINDRX, M9MLRP, BEF, REMRX.

ParmDescriptionDefault
FROM
Mariner 9 image file
(do not include extension,
 .cub is assumed)
NONE
PICNO
6 digit picture number
--
ADD25
Add 25 lines to beginning of
image?
YES
TOL
For noise filter (DN)
14

ADDITIONAL NOTES:

ParmDescription
FROM
The Mariner 9 input image file must be 8-bit and level 0. Do
NOT include the extension with the filename. The program will
assume .cub as the filename extension.
ADD25
Determines if 25 lines of NULLs will be added to the top of
the FROM image before processing.  The Mariner 9 images
distributed by PDS are missing the first 25 lines of data.
The 25 lines need to be added in order for the reseau and
calibration files to correspond to the correct location in
the image file.
PICNO
The picture number of the image, in the following format:
rrrcxx, where rrr is the orbit number (examples: 123 or
012); c is the camera (A or B), and xx is the frame number
(examples: 01 or 33). Only provide this number if the
picture number on the labels is incorrect.
TOL
The tolerance for the filter in DN.  No filtering will
occur if adjacent pixel values differ by less than TOL.
The default tolerance of 14 will preserve real data
contrasts in most planetary images.  Larger tolerances
should be used for limb or satellite images.

Last updated: Jan 31 2005
File: pdfs2.html

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