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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <mach.h>
include <imhdr.h>
include "src/icombine.h"
# T_IMCOMBINE - This task combines a list of images into an output image
# and an optional sigma image. There are many combining options from
# which to choose.
procedure t_imcombine ()
pointer sp, fname, output, headers, bmask, rmask, sigma, nrmask, emask, logfile
pointer scales, zeros, wts, im
int n, input, ilist, olist, hlist, blist, rlist, slist, nrlist, elist
bool clgetb()
real clgetr()
int clgwrd(), clgeti(), imtopenp(), imtopen(), imtgetim(), imtlen()
pointer immap()
errchk immap, icombine
include "src/icombine.com"
begin
call smark (sp)
call salloc (fname, SZ_FNAME, TY_CHAR)
call salloc (output, SZ_FNAME, TY_CHAR)
call salloc (headers, SZ_FNAME, TY_CHAR)
call salloc (bmask, SZ_FNAME, TY_CHAR)
call salloc (rmask, SZ_FNAME, TY_CHAR)
call salloc (nrmask, SZ_FNAME, TY_CHAR)
call salloc (emask, SZ_FNAME, TY_CHAR)
call salloc (sigma, SZ_FNAME, TY_CHAR)
call salloc (expkeyword, SZ_FNAME, TY_CHAR)
call salloc (statsec, SZ_FNAME, TY_CHAR)
call salloc (gain, SZ_FNAME, TY_CHAR)
call salloc (rdnoise, SZ_FNAME, TY_CHAR)
call salloc (snoise, SZ_FNAME, TY_CHAR)
call salloc (logfile, SZ_FNAME, TY_CHAR)
# Get task parameters. Some additional parameters are obtained later.
ilist = imtopenp ("input")
olist = imtopenp ("output")
hlist = imtopenp ("headers")
blist = imtopenp ("bpmasks")
rlist = imtopenp ("rejmasks")
nrlist = imtopenp ("nrejmasks")
elist = imtopenp ("expmasks")
slist = imtopenp ("sigmas")
call clgstr ("logfile", Memc[logfile], SZ_FNAME)
project = clgetb ("project")
combine = clgwrd ("combine", Memc[fname], SZ_FNAME, COMBINE)
if (combine == MEDIAN || combine == LMEDIAN) {
if (combine == MEDIAN)
medtype = MEDAVG
else {
medtype = MEDLOW
combine = MEDIAN
}
}
reject = clgwrd ("reject", Memc[fname], SZ_FNAME, REJECT)
blank = clgetr ("blank")
call clgstr ("expname", Memc[expkeyword], SZ_FNAME)
call clgstr ("statsec", Memc[statsec], SZ_FNAME)
call clgstr ("gain", Memc[gain], SZ_FNAME)
call clgstr ("rdnoise", Memc[rdnoise], SZ_FNAME)
call clgstr ("snoise", Memc[snoise], SZ_FNAME)
lthresh = clgetr ("lthreshold")
hthresh = clgetr ("hthreshold")
lsigma = clgetr ("lsigma")
hsigma = clgetr ("hsigma")
pclip = clgetr ("pclip")
flow = clgetr ("nlow")
fhigh = clgetr ("nhigh")
nkeep = clgeti ("nkeep")
grow = clgetr ("grow")
mclip = clgetb ("mclip")
sigscale = clgetr ("sigscale")
verbose = false
# Check lists.
n = imtlen (ilist)
if (n == 0)
call error (1, "No input images to combine")
if (project) {
if (imtlen (olist) != n)
call error (1, "Wrong number of output images")
if (imtlen (hlist) != 0 && imtlen (hlist) != n)
call error (1, "Wrong number of header files")
if (imtlen (blist) != 0 && imtlen (blist) != n)
call error (1, "Wrong number of bad pixel masks")
if (imtlen (rlist) != 0 && imtlen (rlist) != n)
call error (1, "Wrong number of rejection masks")
if (imtlen (nrlist) > 0 && imtlen (nrlist) != n)
call error (1, "Wrong number of number rejected masks")
if (imtlen (elist) > 0 && imtlen (elist) != n)
call error (1, "Wrong number of exposure masks")
if (imtlen (slist) > 0 && imtlen (slist) != n)
call error (1, "Wrong number of sigma images")
} else {
if (imtlen (olist) != 1)
call error (1, "Wrong number of output images")
if (imtlen (hlist) > 1)
call error (1, "Wrong number of header files")
if (imtlen (blist) > 1)
call error (1, "Wrong number of bad pixel masks")
if (imtlen (rlist) > 1)
call error (1, "Wrong number of rejection masks")
if (imtlen (nrlist) > 1)
call error (1, "Wrong number of number rejected masks")
if (imtlen (elist) > 1)
call error (1, "Wrong number of exposure masks")
if (imtlen (slist) > 1)
call error (1, "Wrong number of sigma images")
}
# Check parameters, map INDEFs, and set threshold flag
if (pclip == 0. && reject == PCLIP)
call error (1, "Pclip parameter may not be zero")
if (IS_INDEFR (blank))
blank = 0.
if (IS_INDEFR (lsigma))
lsigma = MAX_REAL
if (IS_INDEFR (hsigma))
hsigma = MAX_REAL
if (IS_INDEFR (pclip))
pclip = -0.5
if (IS_INDEFR (flow))
flow = 0
if (IS_INDEFR (fhigh))
fhigh = 0
if (IS_INDEFR (grow))
grow = 0.
if (IS_INDEF (sigscale))
sigscale = 0.
if (IS_INDEF(lthresh) && IS_INDEF(hthresh))
dothresh = false
else {
dothresh = true
if (IS_INDEF(lthresh))
lthresh = -MAX_REAL
if (IS_INDEF(hthresh))
hthresh = MAX_REAL
}
# Loop through image lists.
while (imtgetim (ilist, Memc[fname], SZ_FNAME) != EOF) {
iferr {
scales = NULL; input = ilist
if (imtgetim (olist, Memc[output], SZ_FNAME) == EOF) {
if (project) {
call sprintf (Memc[output], SZ_FNAME,
"IMCOMBINE: No output image for %s")
call pargstr (Memc[fname])
call error (1, Memc[output])
} else
call error (1, "IMCOMBINE: No output image")
}
if (imtgetim (hlist, Memc[headers], SZ_FNAME) == EOF)
Memc[headers] = EOS
if (imtgetim (blist, Memc[bmask], SZ_FNAME) == EOF)
Memc[bmask] = EOS
if (imtgetim (rlist, Memc[rmask], SZ_FNAME) == EOF)
Memc[rmask] = EOS
if (imtgetim (nrlist, Memc[nrmask], SZ_FNAME) == EOF)
Memc[nrmask] = EOS
if (imtgetim (elist, Memc[emask], SZ_FNAME) == EOF)
Memc[emask] = EOS
if (imtgetim (slist, Memc[sigma], SZ_FNAME) == EOF)
Memc[sigma] = EOS
# Set the input list and initialize the scaling factors.
if (project) {
im = immap (Memc[fname], READ_ONLY, 0)
if (IM_NDIM(im) == 1)
n = 0
else
n = IM_LEN(im,IM_NDIM(im))
call imunmap (im)
if (n == 0) {
call sprintf (Memc[output], SZ_FNAME,
"IMCOMBINE: Can't project one dimensional image %s")
call pargstr (Memc[fname])
call error (1, Memc[output])
}
input = imtopen (Memc[fname])
} else {
call imtrew (ilist)
n = imtlen (ilist)
input = ilist
}
# Allocate and initialize scaling factors.
call malloc (scales, 3*n, TY_REAL)
zeros = scales + n
wts = scales + 2 * n
call amovkr (INDEFR, Memr[scales], 3*n)
call icombine (input, Memc[output], Memc[headers], Memc[bmask],
Memc[rmask], Memc[nrmask], Memc[emask], Memc[sigma],
Memc[logfile], Memr[scales], Memr[zeros], Memr[wts],
NO, NO, NO)
} then
call erract (EA_WARN)
if (input != ilist)
call imtclose (input)
call mfree (scales, TY_REAL)
if (!project)
break
}
call imtclose (ilist)
call imtclose (olist)
call imtclose (hlist)
call imtclose (blist)
call imtclose (rlist)
call imtclose (nrlist)
call imtclose (elist)
call imtclose (slist)
call sfree (sp)
end
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