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include <imhdr.h>
include <imset.h>
include <mwset.h>
define OFFTYPES "|none|wcs|world|physical|grid|"
define FILE 0
define NONE 1
define WCS 2
define WORLD 3
define PHYSICAL 4
define GRID 5
# IC_SETOUT -- Set output image size and offsets of input images.
procedure ic_setout (in, out, offsets, nimages)
pointer in[nimages] # Input images
pointer out[ARB] # Output images
int offsets[nimages,ARB] # Offsets
int nimages # Number of images
int i, j, indim, outdim, mwdim, a, b, amin, bmax, fd, offtype
real val
bool proj, reloff, flip, streq(), fp_equald()
pointer sp, str, fname
pointer ltv, lref, wref, cd, ltm, coord, shift, axno, axval, section
pointer mw, ct, mw_openim(), mw_sctran(), xt_immap()
int open(), fscan(), nscan(), mw_stati(), strlen(), strdic()
errchk mw_openim, mw_gwtermd, mw_gltermd, mw_gaxmap
errchk mw_sctran, mw_ctrand, open, xt_immap
include "icombine.com"
define newscan_ 10
begin
call smark (sp)
call salloc (str, SZ_FNAME, TY_CHAR)
call salloc (fname, SZ_FNAME, TY_CHAR)
call salloc (ltv, IM_MAXDIM, TY_DOUBLE)
call salloc (ltm, IM_MAXDIM*IM_MAXDIM, TY_DOUBLE)
call salloc (lref, IM_MAXDIM, TY_DOUBLE)
call salloc (wref, IM_MAXDIM, TY_DOUBLE)
call salloc (cd, IM_MAXDIM*IM_MAXDIM, TY_DOUBLE)
call salloc (coord, IM_MAXDIM, TY_DOUBLE)
call salloc (shift, IM_MAXDIM, TY_REAL)
call salloc (axno, IM_MAXDIM, TY_INT)
call salloc (axval, IM_MAXDIM, TY_INT)
# Check and set the image dimensionality.
indim = IM_NDIM(in[1])
outdim = IM_NDIM(out[1])
proj = (indim != outdim)
if (!proj) {
do i = 1, nimages
if (IM_NDIM(in[i]) != outdim) {
call sfree (sp)
call error (1, "Image dimensions are not the same")
}
}
# Set the reference point to that of the first image.
mw = mw_openim (in[1])
call mw_seti (mw, MW_USEAXMAP, NO)
mwdim = mw_stati (mw, MW_NPHYSDIM)
call mw_gwtermd (mw, Memd[lref], Memd[wref], Memd[cd], mwdim)
ct = mw_sctran (mw, "world", "logical", 0)
call mw_ctrand (ct, Memd[wref], Memd[lref], mwdim)
call mw_ctfree (ct)
if (proj)
Memd[lref+outdim] = 1
# Parse the user offset string. If "none" then there are no offsets.
# If "world" or "wcs" then set the offsets based on the world WCS.
# If "physical" then set the offsets based on the physical WCS.
# If "grid" then set the offsets based on the input grid parameters.
# If a file scan it.
call clgstr ("offsets", Memc[fname], SZ_FNAME)
call sscan (Memc[fname])
call gargwrd (Memc[fname], SZ_FNAME)
if (nscan() == 0)
offtype = NONE
else {
offtype = strdic (Memc[fname], Memc[str], SZ_FNAME, OFFTYPES)
if (offtype > 0 && !streq (Memc[fname], Memc[str]))
offtype = 0
}
if (offtype == 0)
offtype = FILE
switch (offtype) {
case NONE:
call aclri (offsets, outdim*nimages)
reloff = true
case WORLD, WCS:
do j = 1, outdim
offsets[1,j] = 0
if (proj) {
ct = mw_sctran (mw, "world", "logical", 0)
do i = 2, nimages {
Memd[wref+outdim] = i
call mw_ctrand (ct, Memd[wref], Memd[coord], indim)
do j = 1, outdim
offsets[i,j] = nint (Memd[lref+j-1] - Memd[coord+j-1])
}
call mw_ctfree (ct)
call mw_close (mw)
} else {
ct = mw_sctran (mw, "world", "logical", 0)
call mw_ctrand (ct, Memd[wref], Memd[lref], indim)
do i = 2, nimages {
call mw_close (mw)
mw = mw_openim (in[i])
ct = mw_sctran (mw, "world", "logical", 0)
call mw_ctrand (ct, Memd[wref], Memd[coord], indim)
do j = 1, outdim
offsets[i,j] = nint (Memd[lref+j-1] - Memd[coord+j-1])
call mw_ctfree (ct)
}
}
reloff = true
case PHYSICAL:
call salloc (section, SZ_FNAME, TY_CHAR)
call mw_gltermd (mw, Memd[ltm], Memd[coord], indim)
do i = 2, nimages {
call mw_close (mw)
mw = mw_openim (in[i])
call mw_gltermd (mw, Memd[cd], Memd[coord], indim)
call strcpy ("[", Memc[section], SZ_FNAME)
flip = false
do j = 0, indim*indim-1, indim+1 {
if (Memd[ltm+j] * Memd[cd+j] >= 0.)
call strcat ("*,", Memc[section], SZ_FNAME)
else {
call strcat ("-*,", Memc[section], SZ_FNAME)
flip = true
}
}
Memc[section+strlen(Memc[section])-1] = ']'
if (flip) {
call imstats (in[i], IM_IMAGENAME, Memc[fname], SZ_FNAME)
call strcat (Memc[section], Memc[fname], SZ_FNAME)
call xt_imunmap (in[i], i)
in[i] = xt_immap (Memc[fname], READ_ONLY, TY_CHAR, i)
call mw_close (mw)
mw = mw_openim (in[i])
call mw_gltermd (mw, Memd[cd], Memd[coord], indim)
do j = 0, indim*indim-1
if (!fp_equald (Memd[ltm+j], Memd[cd+j]))
call error (1,
"Cannot match physical coordinates")
}
}
call mw_close (mw)
mw = mw_openim (in[1])
ct = mw_sctran (mw, "logical", "physical", 0)
call mw_ctrand (ct, Memd[lref], Memd[ltv], indim)
call mw_ctfree (ct)
do j = 1, outdim
offsets[1,j] = 0
if (proj) {
ct = mw_sctran (mw, "physical", "logical", 0)
do i = 2, nimages {
Memd[ltv+outdim] = i
call mw_ctrand (ct, Memd[ltv], Memd[coord], indim)
do j = 1, outdim
offsets[i,j] = nint (Memd[lref+j-1] - Memd[coord+j-1])
}
call mw_ctfree (ct)
call mw_close (mw)
} else {
do i = 2, nimages {
call mw_close (mw)
mw = mw_openim (in[i])
ct = mw_sctran (mw, "physical", "logical", 0)
call mw_ctrand (ct, Memd[ltv], Memd[coord], indim)
do j = 1, outdim
offsets[i,j] = nint (Memd[lref+j-1] - Memd[coord+j-1])
call mw_ctfree (ct)
}
}
reloff = true
case GRID:
amin = 1
do j = 1, outdim {
call gargi (a)
call gargi (b)
if (nscan() < 1+2*j) {
a = 1
b = 0
}
do i = 1, nimages
offsets[i,j] = mod ((i-1)/amin, a) * b
amin = amin * a
}
reloff = true
case FILE:
reloff = true
fd = open (Memc[fname], READ_ONLY, TEXT_FILE)
do i = 1, nimages {
newscan_ if (fscan (fd) == EOF)
call error (1, "IMCOMBINE: Offset list too short")
call gargwrd (Memc[fname], SZ_FNAME)
if (Memc[fname] == '#') {
call gargwrd (Memc[fname], SZ_FNAME)
call strlwr (Memc[fname])
if (streq (Memc[fname], "absolute"))
reloff = false
else if (streq (Memc[fname], "relative"))
reloff = true
goto newscan_
}
call reset_scan ()
do j = 1, outdim {
call gargr (val)
offsets[i,j] = nint (val)
}
if (nscan() < outdim)
call error (1, "IMCOMBINE: Error in offset list")
}
call close (fd)
}
# Set the output image size and the aligned flag
aligned = true
do j = 1, outdim {
a = offsets[1,j]
b = IM_LEN(in[1],j) + a
amin = a
bmax = b
do i = 2, nimages {
a = offsets[i,j]
b = IM_LEN(in[i],j) + a
if (a != amin || b != bmax || !reloff)
aligned = false
amin = min (a, amin)
bmax = max (b, bmax)
}
IM_LEN(out[1],j) = bmax
if (reloff || amin < 0) {
do i = 1, nimages
offsets[i,j] = offsets[i,j] - amin
IM_LEN(out[1],j) = IM_LEN(out[1],j) - amin
}
}
# Get the output limits.
call clgstr ("outlimits", Memc[fname], SZ_FNAME)
call sscan (Memc[fname])
do j = 1, outdim {
call gargi (a)
call gargi (b)
if (nscan() < 2*j)
break
if (!IS_INDEFI(a)) {
do i = 1, nimages {
offsets[i,j] = offsets[i,j] - a + 1
if (offsets[i,j] != 0)
aligned = false
}
IM_LEN(out[1],j) = IM_LEN(out[1],j) - a + 1
}
if (!IS_INDEFI(a) && !IS_INDEFI(b))
IM_LEN(out[1],j) = min (IM_LEN(out[1],j), b - a + 1)
}
# Update the WCS.
if (proj || !aligned || !reloff) {
call mw_close (mw)
mw = mw_openim (out[1])
mwdim = mw_stati (mw, MW_NPHYSDIM)
call mw_gaxmap (mw, Memi[axno], Memi[axval], mwdim)
if (!aligned || !reloff) {
call mw_gltermd (mw, Memd[cd], Memd[lref], mwdim)
do i = 1, mwdim {
j = Memi[axno+i-1]
if (j > 0 && j <= indim)
Memd[lref+i-1] = Memd[lref+i-1] + offsets[1,j]
}
if (proj)
Memd[lref+mwdim-1] = 0.
call mw_sltermd (mw, Memd[cd], Memd[lref], mwdim)
}
if (proj) {
# Apply dimensional reduction.
do i = 1, mwdim {
j = Memi[axno+i-1]
if (j <= outdim)
next
else if (j > outdim+1)
Memi[axno+i-1] = j - 1
else {
Memi[axno+i-1] = 0
Memi[axval+i-1] = 0
}
}
call mw_saxmap (mw, Memi[axno], Memi[axval], mwdim)
}
# Reset physical coordinates.
if (offtype == WCS || offtype == WORLD) {
call mw_gltermd (mw, Memd[ltm], Memd[ltv], mwdim)
call mw_gwtermd (mw, Memd[lref], Memd[wref], Memd[cd], mwdim)
call mwvmuld (Memd[ltm], Memd[lref], Memd[lref], mwdim)
call aaddd (Memd[lref], Memd[ltv], Memd[lref], mwdim)
call mwinvertd (Memd[ltm], Memd[ltm], mwdim)
call mwmmuld (Memd[cd], Memd[ltm], Memd[cd], mwdim)
call mw_swtermd (mw, Memd[lref], Memd[wref], Memd[cd], mwdim)
call aclrd (Memd[ltv], mwdim)
call aclrd (Memd[ltm], mwdim*mwdim)
do i = 1, mwdim
Memd[ltm+(i-1)*(mwdim+1)] = 1.
call mw_sltermd (mw, Memd[ltm], Memd[ltv], mwdim)
}
call mw_saveim (mw, out)
}
call mw_close (mw)
call sfree (sp)
end
|
