m9res Documentation

M9RES - Subtracts residual image from Mariner 9 images
PROGRAMMER:  MARS1::KEH (Ken Herkenhoff, Caltech)
Subtracts residual component from Mariner 9 images using preflight
calibration data as well as inflight data.  The previous image must
immediately precede the input file (DAS count is 70 less), and should
have had noise and reseaux removed.  Both input and output files are
8-bit.
The Mariner 9 cameras were known to produce residual images (due to
incomplete erasure of previous image) before flight and extensive
calibration data was gathered.  These data were compressed into
several calibration files, one for each filter/camera combination.
Data files for camera A, orange, green and 60 degree polarizing filters
and for camera B have been created to date.  The input and previous DN
values are used to interpolate between (or extrapolate from) calibration
data values at each pixel to find the residual, which is then subtracted
from the input image.  For more information see Herkenhoff et al., 1988
in Icarus (in press).

Input image file name
(default extension is .cub)

NONE

Previous image file name
(default extension is .cub)

NONE

Output file name
(default extension is .cub)

NONE

ADDITIONAL NOTES:

Parm	Description
FROM	The input Mariner 9 image must be 8-bit, and should have had reseaux and noise removed. If the file extension is omitted, then ".cub" will be assumed.
FROM2	The previous frame (if it exists) must have a DAS count (spacecraft time) that is exactly 70 less than that of the input image. The previous image must also be 8-bit and should have had reseaux and noise removed. If the file extension is omitted, then ".cub" will be assumed.
TO	The output image file will be 8-bit, with residual image removed. If the file extension is omitted, then ".cub" will be assumed.