Help for ELVCOR3

PURPOSE
     Calculate elevation offsets for a satellite image using a
DTED elevation image and satellite az-elev
	   
CALL
     
OPERATION


PERFORMANCE

Restrictions
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The dted must cover the area and have a GeoTIFF label.

Original Programmer: A. L. Zobrist, 15 Sep, 2003
Current Cognizant Programmer: A. L. Zobrist

REVISIONS
2022-08-10 B. Crocco afids to opensource (untested)

PARAMETERS:

GRIDFILE

ibis file with (line,samp) in cols (1,2) referencing gridimage

GRIDIMAGE

A GeoTIFF labelled image used to map the (line,samp)

DTED

elevation file with GeoTIFF label covering area, in m.

SATAZIM

satellite azimuth, clockwise from North in degrees

SATELEV

satellite elevation, nadir is ninety degrees .REGELV registration elevation from proc .COLS Generated and corrected pixels in these columns (oldline,oldsamp, newline,newsamp) .END