findrx Documentation

findrx - Find Reseau coordinates and write them to the label

"findrx" will read a nominal Reseau file for the Viking, Voyager, or
Mariner mission.  It then compares the data area around each Reseau with
a template of data that has been read from a template file for that
mission.  The size of the area around each Reseau that is compared
depends on the size of the data template.  This is usually a 7 by 7
area.  Through the comparison the program determines the real Reseau
location to the nearest 2/10 of a pixel. The new Reseau location is
written to the cube file label.  A RESEAU_VALID keyword is also
written to the label.  This keyword has a value of 0 if the program
could not determine the actual reseau location or a 1 if the program
did find the actual reseau location.  The RESEAU_TYPE, a number from
0 to 8, is copied from the nominal file to the output cube file.

Programmer:  Jim Mathews, U.S.G.S., Flagstaff, AZ

Input cube file name
  (default extension is .cub)

NONE

Fit tolerance

0.7

Saturation value

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User comment

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ADDITIONAL NOTES:

Parm	Description
FROM	Input cube file name. If the file extension is omitted, then ".cub" will be assumed.
FITTOL	The fit tolerance factor used in calculating the sample and line location of the Reseaus. This value determines how good the fit is between the two areas compared. The range of possible values is 0 to 1. 0 is the worst fit and 1 is the best fit.
SATVAL	This value is used as a crude filter for the data around a Reseau. Each pixel value in an area the same size as the template and centered on the nominal Reseau location is compared to SATVAL. If the pixel value is greater than SATVAL, the pixel value is replaced by the value in the template at the same line and sample location before the fit comparison is performed. The purpose of this value is to remove any noisy pixels from around each Reseau. If SATVAL is left as the NULL value, the filter operation will not be performed.
USERNOTE	Comment from the user. This will be recorded in the ISIS session log file and also in the History entry that is put into the History object of the output file.