Help for OSBLEMLOC

PURPOSE:

Given the image-space blemish locations for a Voyager camera, OSBLEMLOC
computes the object-space blemish locations for the camera.

EXECUTION STATEMENT:

      OSBLEMLOC  INP=ISBLEM  OUT=OSBLEM  RES=RESEAU user-parameters...

where ISBLEM is an input blemish location file containing the image-space
blemish locations, OSBLEM is an output blemish location file which will
contain the corresponding object-space blemish locations, and RESEAU is the
input RESEAU file.  Normally, the RESEAU file to be used will be 
wms_vgr:[000000]cresj.fil.
OPERATION:

OSBLEMLOC requires the following inputs:

	1) The image-space blemish locations for a given camera.

	2) A Voyager Reseau Location File (for any of the planets).

The image-space blemish locations are input via a blemish location file
(ISBLEM).

The Reseau Location File must be specified via the RES parameter.  

OSBLEMLOC performs the following:

    1) The camera serial number is extracted from the label of the
       input blemish location file.

    2) The nominal image-space reseau locations for the camera are retrieved
       from the Reseau Location File.

    3) The object-space reseau locations for the camera are retrieved from
       tables internal to the program.

    4) The geometric correction parameters for converting from image-space
       to object space are computed (via a call to GEOMAV).

    5) The offsets from the blemish location file, the image-space
       coordinates for each blemish is computed.

    6) Using the geometric correction parameters, the corresponding object-space
       coordinates are computed (via calls to TRITRA).

    7) The blemish offsets in object-space are computed.

BLEMISH LOCATION FILE FORMAT

The format of the input and output blemish files are identical.  They contain
a single data record.  Each blemish is defined in this record via four (conti-
guous) values:

	1) number of nearest reseau (REAL*4)
	2) line-offset from the reseau (REAL*4)
	3) sample-offset from the reseau (REAL*4)
	4) blemish radius in pixels (REAL*4)

PROGRAM HISTORY:

WRITTEN BY: Gary Yagi 			Feb 22, 1988
COGNIZANT PROGRAMMER: Gary Yagi
REVISIONS:
 Jul 2  96  BAM  ...Ported; replaced old reseau file calls;
		    deleted PCA from tstpdf; pointed to new
		    default reseau file.
 Nov 27 91  FFM  ...Replace UD2 & UD4 with VGR (FR 64506).
                    Add PCA.
 Sep 12 89  GMY  ...Handle new BLEMFIX format labels.
 Jun 28 88  GMY  ...Correct conversion from IS-to-OS.

PARAMETERS: