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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <imhdr.h>
include <imset.h>
include <error.h>
include <syserr.h>
include <mach.h>
include "../icombine.h"
# ICOMBINE -- Combine images
#
# The memory and open file descriptor limits are checked and an attempt
# to recover is made either by setting the image pixel files to be
# closed after I/O or by notifying the calling program that memory
# ran out and the IMIO buffer size should be reduced. After the checks
# a procedure for the selected combine option is called.
# Because there may be several failure modes when reaching the file
# limits we first assume an error is due to the file limit, except for
# out of memory, and close some pixel files. If the error then repeats
# on accessing the pixels the error is passed back.
$for (sr)
procedure icombine$t (in, out, offsets, nimages, bufsize)
pointer in[nimages] # Input images
pointer out[ARB] # Output images
int offsets[nimages,ARB] # Input image offsets
int nimages # Number of input images
int bufsize # IMIO buffer size
char str[1]
int i, j, npts, fd, stropen(), errcode(), imstati()
pointer sp, d, id, n, m, lflag, scales, zeros, wts, dbuf
pointer buf, imgl1$t(), impl1i()
errchk stropen, imgl1$t, impl1i
$if (datatype == sil)
pointer impl1r()
errchk impl1r
$else
pointer impl1$t()
errchk impl1$t
$endif
include "../icombine.com"
begin
npts = IM_LEN(out[1],1)
# Allocate memory.
call smark (sp)
call salloc (d, nimages, TY_POINTER)
call salloc (id, nimages, TY_POINTER)
call salloc (n, npts, TY_INT)
call salloc (m, nimages, TY_POINTER)
call salloc (lflag, nimages, TY_INT)
call salloc (scales, nimages, TY_REAL)
call salloc (zeros, nimages, TY_REAL)
call salloc (wts, nimages, TY_REAL)
call amovki (D_ALL, Memi[lflag], nimages)
# If aligned use the IMIO buffer otherwise we need vectors of
# output length.
if (!aligned) {
call salloc (dbuf, nimages, TY_POINTER)
do i = 1, nimages
call salloc (Memi[dbuf+i-1], npts, TY_PIXEL)
}
if (project) {
call imseti (in[1], IM_NBUFS, nimages)
call imseti (in[1], IM_BUFSIZE, bufsize)
do i = 1, 3 {
if (out[i] != NULL)
call imseti (out[i], IM_BUFSIZE, bufsize)
}
} else {
# Reserve FD for string operations.
fd = stropen (str, 1, NEW_FILE)
# Do I/O to the images.
do i = 1, 3 {
if (out[i] != NULL)
call imseti (out[i], IM_BUFSIZE, bufsize)
}
$if (datatype == sil)
buf = impl1r (out[1])
call aclrr (Memr[buf], npts)
if (out[3] != NULL) {
buf = impl1r (out[3])
call aclrr (Memr[buf], npts)
}
$else
buf = impl1$t (out[1])
call aclr$t (Mem$t[buf], npts)
if (out[3] != NULL) {
buf = impl1$t (out[3])
call aclr$t (Mem$t[buf], npts)
}
$endif
if (out[2] != NULL) {
buf = impl1i (out[2])
call aclri (Memi[buf], npts)
}
do i = 1, nimages {
call imseti (in[i], IM_BUFSIZE, bufsize)
iferr (buf = imgl1$t (in[i])) {
switch (errcode()) {
case SYS_MFULL:
call sfree (sp)
call strclose (fd)
call erract (EA_ERROR)
case SYS_FTOOMANYFILES, SYS_IKIOPIX:
if (imstati (in[i], IM_CLOSEFD) == YES) {
call sfree (sp)
call strclose (fd)
call erract (EA_ERROR)
}
do j = i-2, nimages
call imseti (in[j], IM_CLOSEFD, YES)
buf = imgl1$t (in[i])
default:
call sfree (sp)
call strclose (fd)
call erract (EA_ERROR)
}
}
}
call strclose (fd)
}
call ic_combine$t (in, out, Memi[dbuf], Memi[d], Memi[id], Memi[n],
Memi[m], Memi[lflag], offsets, Memr[scales], Memr[zeros],
Memr[wts], nimages, npts)
end
# IC_COMBINE -- Combine images.
procedure ic_combine$t (in, out, dbuf, d, id, n, m, lflag, offsets,
scales, zeros, wts, nimages, npts)
pointer in[nimages] # Input images
pointer out[ARB] # Output image
pointer dbuf[nimages] # Data buffers for nonaligned images
pointer d[nimages] # Data pointers
pointer id[nimages] # Image index ID pointers
int n[npts] # Number of good pixels
pointer m[nimages] # Mask pointers
int lflag[nimages] # Line flags
int offsets[nimages,ARB] # Input image offsets
real scales[nimages] # Scale factors
real zeros[nimages] # Zero offset factors
real wts[nimages] # Combining weights
int nimages # Number of input images
int npts # Number of points per output line
int i, ctor()
real r, imgetr()
pointer sp, v1, v2, v3, outdata, buf, nm, impnli()
$if (datatype == sil)
pointer impnlr()
$else
pointer impnl$t()
$endif
errchk ic_scale, imgetr
include "../icombine.com"
begin
call smark (sp)
call salloc (v1, IM_MAXDIM, TY_LONG)
call salloc (v2, IM_MAXDIM, TY_LONG)
call salloc (v3, IM_MAXDIM, TY_LONG)
call amovkl (long(1), Meml[v1], IM_MAXDIM)
call amovkl (long(1), Meml[v2], IM_MAXDIM)
call amovkl (long(1), Meml[v3], IM_MAXDIM)
call ic_scale (in, out, offsets, scales, zeros, wts, nimages)
# Set combine parameters
switch (combine) {
case AVERAGE:
if (dowts)
keepids = true
else
keepids = false
case MEDIAN:
dowts = false
keepids = false
}
docombine = true
# Set rejection algorithm specific parameters
switch (reject) {
case CCDCLIP, CRREJECT:
call salloc (nm, 3*nimages, TY_REAL)
i = 1
if (ctor (Memc[rdnoise], i, r) > 0) {
do i = 1, nimages
Memr[nm+3*(i-1)] = r
} else {
do i = 1, nimages
Memr[nm+3*(i-1)] = imgetr (in[i], Memc[rdnoise])
}
i = 1
if (ctor (Memc[gain], i, r) > 0) {
do i = 1, nimages {
Memr[nm+3*(i-1)+1] = r
Memr[nm+3*(i-1)] =
max ((Memr[nm+3*(i-1)] / r) ** 2, 1e4 / MAX_REAL)
}
} else {
do i = 1, nimages {
r = imgetr (in[i], Memc[gain])
Memr[nm+3*(i-1)+1] = r
Memr[nm+3*(i-1)] =
max ((Memr[nm+3*(i-1)] / r) ** 2, 1e4 / MAX_REAL)
}
}
i = 1
if (ctor (Memc[snoise], i, r) > 0) {
do i = 1, nimages
Memr[nm+3*(i-1)+2] = r
} else {
do i = 1, nimages {
r = imgetr (in[i], Memc[snoise])
Memr[nm+3*(i-1)+2] = r
}
}
if (!keepids) {
if (doscale1 || grow > 0)
keepids = true
else {
do i = 2, nimages {
if (Memr[nm+3*(i-1)] != Memr[nm] ||
Memr[nm+3*(i-1)+1] != Memr[nm+1] ||
Memr[nm+3*(i-1)+2] != Memr[nm+2]) {
keepids = true
break
}
}
}
}
if (reject == CRREJECT)
lsigma = MAX_REAL
case MINMAX:
mclip = false
if (grow > 0)
keepids = true
case PCLIP:
mclip = true
if (grow > 0)
keepids = true
case AVSIGCLIP, SIGCLIP:
if (doscale1 || grow > 0)
keepids = true
case NONE:
mclip = false
grow = 0
}
if (keepids) {
do i = 1, nimages
call salloc (id[i], npts, TY_INT)
}
$if (datatype == sil)
while (impnlr (out[1], outdata, Meml[v1]) != EOF) {
call ic_gdata$t (in, out, dbuf, d, id, n, m, lflag, offsets,
scales, zeros, nimages, npts, Meml[v2], Meml[v3])
switch (reject) {
case CCDCLIP, CRREJECT:
if (mclip)
call ic_mccdclip$t (d, id, n, scales, zeros, Memr[nm],
nimages, npts, Memr[outdata])
else
call ic_accdclip$t (d, id, n, scales, zeros, Memr[nm],
nimages, npts, Memr[outdata])
case MINMAX:
call ic_mm$t (d, id, n, npts)
case PCLIP:
call ic_pclip$t (d, id, n, nimages, npts, Memr[outdata])
case SIGCLIP:
if (mclip)
call ic_msigclip$t (d, id, n, scales, zeros, nimages, npts,
Memr[outdata])
else
call ic_asigclip$t (d, id, n, scales, zeros, nimages, npts,
Memr[outdata])
case AVSIGCLIP:
if (mclip)
call ic_mavsigclip$t (d, id, n, scales, zeros, nimages,
npts, Memr[outdata])
else
call ic_aavsigclip$t (d, id, n, scales, zeros, nimages,
npts, Memr[outdata])
}
if (grow > 0)
call ic_grow$t (d, id, n, nimages, npts, Memr[outdata])
if (docombine) {
switch (combine) {
case AVERAGE:
call ic_average$t (d, id, n, wts, npts, Memr[outdata])
case MEDIAN:
call ic_median$t (d, n, npts, Memr[outdata])
}
}
if (out[2] != NULL) {
call amovl (Meml[v2], Meml[v1], IM_MAXDIM)
i = impnli (out[2], buf, Meml[v1])
call amovki (nimages, Memi[buf], npts)
call asubi (Memi[buf], n, Memi[buf], npts)
}
if (out[3] != NULL) {
call amovl (Meml[v2], Meml[v1], IM_MAXDIM)
i = impnlr (out[3], buf, Meml[v1])
call ic_sigma$t (d, id, n, wts, npts, Memr[outdata],
Memr[buf])
}
call amovl (Meml[v1], Meml[v2], IM_MAXDIM)
}
$else
while (impnl$t (out[1], outdata, Meml[v1]) != EOF) {
call ic_gdata$t (in, out, dbuf, d, id, n, m, lflag, offsets,
scales, zeros, nimages, npts, Meml[v2], Meml[v3])
switch (reject) {
case CCDCLIP, CRREJECT:
if (mclip)
call ic_mccdclip$t (d, id, n, scales, zeros, Memr[nm],
nimages, npts, Mem$t[outdata])
else
call ic_accdclip$t (d, id, n, scales, zeros, Memr[nm],
nimages, npts, Mem$t[outdata])
case MINMAX:
call ic_mm$t (d, id, n, npts)
case PCLIP:
call ic_pclip$t (d, id, n, nimages, npts, Mem$t[outdata])
case SIGCLIP:
if (mclip)
call ic_msigclip$t (d, id, n, scales, zeros, nimages, npts,
Mem$t[outdata])
else
call ic_asigclip$t (d, id, n, scales, zeros, nimages, npts,
Mem$t[outdata])
case AVSIGCLIP:
if (mclip)
call ic_mavsigclip$t (d, id, n, scales, zeros, nimages,
npts, Mem$t[outdata])
else
call ic_aavsigclip$t (d, id, n, scales, zeros, nimages,
npts, Mem$t[outdata])
}
if (grow > 0)
call ic_grow$t (d, id, n, nimages, npts, Mem$t[outdata])
if (docombine) {
switch (combine) {
case AVERAGE:
call ic_average$t (d, id, n, wts, npts, Mem$t[outdata])
case MEDIAN:
call ic_median$t (d, n, npts, Mem$t[outdata])
}
}
if (out[2] != NULL) {
call amovl (Meml[v2], Meml[v1], IM_MAXDIM)
i = impnli (out[2], buf, Meml[v1])
call amovki (nimages, Memi[buf], npts)
call asubi (Memi[buf], n, Memi[buf], npts)
}
if (out[3] != NULL) {
call amovl (Meml[v2], Meml[v1], IM_MAXDIM)
i = impnl$t (out[3], buf, Meml[v1])
call ic_sigma$t (d, id, n, wts, npts, Mem$t[outdata],
Mem$t[buf])
}
call amovl (Meml[v1], Meml[v2], IM_MAXDIM)
}
$endif
call sfree (sp)
end
$endfor
|
