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include <imhdr.h>
include "ccdred.h"
# T_MKFRINGECOR -- CL task to make fringe correction image. The large scale
# background of the input images is subtracted from the input image to obtain
# the output fringe correction image. The image is first processed if needed.
procedure t_mkfringecor()
int listin # List of input CCD images
int listout # List of output CCD images
int ccdtype # CCD image type
int interactive # Fit overscan interactively?
bool clgetb(), streq()
int imtopenp(), imtgetim()
pointer sp, input, output, tmp, str, in, out, ccd
errchk set_input, set_output, ccddelete
begin
call smark (sp)
call salloc (input, SZ_FNAME, TY_CHAR)
call salloc (output, SZ_FNAME, TY_CHAR)
call salloc (tmp, SZ_FNAME, TY_CHAR)
call salloc (str, SZ_LINE, TY_CHAR)
# Get the lists and instrument translation file. Open the translation
# file. Initialize the interactive flag and the calibration images.
listin = imtopenp ("input")
listout = imtopenp ("mkfringecor.output")
call clgstr ("instrument", Memc[input], SZ_FNAME)
if (Memc[input] == EOS)
call error (1, "No 'instrument' translation file specified.")
call hdmopen (Memc[input])
call set_interactive ("", interactive)
call cal_open (NULL)
call ccd_open (0)
# Process each image.
while (imtgetim (listin, Memc[input], SZ_FNAME) != EOF) {
if (clgetb ("noproc")) {
call printf ("%s: mkfringecor\n")
call pargstr (Memc[input])
}
# Set input and output images. Use temporary image if needed.
call set_input (Memc[input], in, ccdtype)
if (in == NULL)
next
if (imtgetim (listout, Memc[output], SZ_FNAME) == EOF)
call strcpy (Memc[input], Memc[output], SZ_FNAME)
if (Memc[output] == EOS)
call strcpy (Memc[input], Memc[output], SZ_FNAME)
if (streq (Memc[input], Memc[output]))
call mktemp ("tmp", Memc[tmp], SZ_FNAME)
else
call strcpy (Memc[output], Memc[tmp], SZ_FNAME)
call set_output (in, out, Memc[tmp])
# Process image as a flat field image.
call set_proc (in, out, ccd)
call set_sections (ccd)
call set_trim (ccd)
call set_fixpix (ccd)
call set_overscan (ccd)
call set_zero (ccd)
call set_dark (ccd)
call set_flat (ccd)
call set_illum (ccd)
# Do the processing.
if (CORS(ccd) == YES) {
call doproc (ccd)
call set_header (ccd)
# Finish up
call imunmap (in)
call imunmap (out)
if (streq (Memc[input], Memc[output])) {
call ccddelete (Memc[input])
call imrename (Memc[tmp], Memc[input])
} else
call strcpy (Memc[output], Memc[input], SZ_FNAME)
} else {
# Delete the temporary output image. Make a copy if needed.
call imunmap (in)
call imunmap (out)
call imdelete (Memc[tmp])
}
call free_proc (ccd)
# Do special processing.
call mkfringecor (Memc[input], Memc[output])
if (!streq (Memc[input], Memc[output]))
call ccdcopy (Memc[input], Memc[output])
}
# Finish up.
call hdmclose ()
call imtclose (listin)
call imtclose (listout)
call cal_close ()
call ccd_close ()
call sfree (sp)
end
# MKFRINGECOR -- Given an input image which has been processed make the output
# fringe correction image.
procedure mkfringecor (input, output)
char input[SZ_FNAME] # Input image
char output[SZ_FNAME] # Output image
int i, nc, nl
pointer sp, str, illum, tmp, in, im, out, out1
bool clgetb(), ccdflag(), streq()
pointer immap(), imgl2r(), impl2r()
errchk immap, ccddelete
begin
# Check if this operation has been done.
in = immap (input, READ_ONLY, 0)
if (ccdflag (in, "mkfringe")) {
call imunmap (in)
return
}
# Print operation if not processing.
if (clgetb ("noproc")) {
call eprintf (
" [TO BE DONE] Make fringe correction\n")
call pargstr (input)
call imunmap (in)
return
}
call smark (sp)
call salloc (str, SZ_LINE, TY_CHAR)
call salloc (illum, SZ_FNAME, TY_CHAR)
call salloc (tmp, SZ_FNAME, TY_CHAR)
# Make the illumination image.
call imunmap (in)
call strcpy (input, Memc[tmp], SZ_FNAME)
call mktemp ("tmp", Memc[illum], SZ_FNAME)
call mkillumination (Memc[tmp], Memc[illum], NO, NO)
in = immap (input, READ_ONLY, 0)
im = immap (Memc[illum], READ_ONLY, 0)
# Create the temporary output.
if (streq (input, output)) {
call mktemp ("tmp", Memc[tmp], SZ_FNAME)
call set_output (in, out, Memc[tmp])
out1 = in
} else {
call set_output (in, out, output)
out1 = out
}
# Subtract the illumination from input image.
nc = IM_LEN(out,1)
nl = IM_LEN(out,2)
do i = 1, nl
call asubr (Memr[imgl2r(in,i)], Memr[imgl2r(im,i)],
Memr[impl2r(out,i)], nc)
# Log the operation.
call sprintf (Memc[str], SZ_LINE, "Fringe correction created")
call timelog (Memc[str], SZ_LINE)
call ccdlog (out1, Memc[str])
call hdmpstr (out, "mkfringe", Memc[str])
call hdmpstr (out, "imagetyp", "fringe")
# Finish up
call imunmap (in)
call imunmap (im)
call imunmap (out)
call imdelete (Memc[illum])
if (streq (input, output)) {
call ccddelete (input)
call imrename (Memc[tmp], input)
} else
call strcpy (output, input, SZ_FNAME)
call sfree (sp)
end
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