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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <imhdr.h>
include <pkg/gtools.h>
# LINECLEAN -- Fit a function to the image lines and output an image
# with rejected points replaced by the fit. The fitting parameters may be
# set interactively using the icfit package.
procedure t_lineclean ()
int listin # Input image list
int listout # Output image list
char sample[SZ_LINE] # Sample ranges
int naverage # Sample averaging size
char function[SZ_LINE] # Curve fitting function
int order # Order of curve fitting function
real low_reject, high_reject # Rejection threshold
int niterate # Number of rejection iterations
real grow # Rejection growing radius
bool interactive # Interactive?
char input[SZ_LINE] # Input image
char output[SZ_FNAME] # Output image
pointer in, out # IMIO pointers
pointer ic # ICFIT pointer
pointer gt # GTOOLS pointer
int imtopen(), imtgetim(), imtlen(), gt_init()
int clgeti()
real clgetr()
bool clgetb()
begin
# Get input and output lists and check that the number of images
# are the same.
call clgstr ("input", input, SZ_LINE)
listin = imtopen (input)
call clgstr ("output", input, SZ_LINE)
listout = imtopen (input)
if (imtlen (listin) != imtlen (listout)) {
call imtclose (listin)
call imtclose (listout)
call error (0, "Input and output image lists do not match")
}
# Get task parameters.
call clgstr ("sample", sample, SZ_LINE)
naverage = clgeti ("naverage")
call clgstr ("function", function, SZ_LINE)
order = clgeti ("order")
low_reject = clgetr ("low_reject")
high_reject = clgetr ("high_reject")
niterate = clgeti ("niterate")
grow = clgetr ("grow")
interactive = clgetb ("interactive")
# Set the ICFIT pointer structure.
call ic_open (ic)
call ic_pstr (ic, "sample", sample)
call ic_puti (ic, "naverage", naverage)
call ic_pstr (ic, "function", function)
call ic_puti (ic, "order", order)
call ic_putr (ic, "low", low_reject)
call ic_putr (ic, "high", high_reject)
call ic_puti (ic, "niterate", niterate)
call ic_putr (ic, "grow", grow)
call ic_pstr (ic, "ylabel", "")
gt = gt_init()
call gt_sets (gt, GTTYPE, "line")
# Clean the lines in each input image.
while ((imtgetim (listin, input, SZ_FNAME) != EOF) &&
(imtgetim (listout, output, SZ_FNAME) != EOF)) {
call lc_immap (input, output, in, out)
call lineclean (in, out, ic, gt, input, interactive)
call imunmap (in)
call imunmap (out)
}
call ic_closer (ic)
call gt_free (gt)
call imtclose (listin)
call imtclose (listout)
end
# LINECLEAN -- Given the image descriptor determine the fitting function
# for each line and create an output image. If the interactive flag
# is set then set the fitting parameters interactively.
procedure lineclean (in, out, ic, gt, title, interactive)
pointer in # IMIO pointer for input image
pointer out # IMIO pointer for output image
pointer ic # ICFIT pointer
pointer gt # GTIO pointer
char title[ARB] # Title
bool interactive # Interactive?
char graphics[SZ_FNAME]
int i, nx, new
long inline[IM_MAXDIM], outline[IM_MAXDIM]
pointer cv, gp, sp, x, wts, indata, outdata
int lf_getline(), imgnlr(), impnlr(), strlen()
pointer gopen()
begin
# Allocate memory for curve fitting.
nx = IM_LEN(in, 1)
call smark (sp)
call salloc (x, nx, TY_REAL)
call salloc (wts, nx, TY_REAL)
do i = 1, nx
Memr[x+i-1] = i
call amovkr (1., Memr[wts], nx)
call ic_putr (ic, "xmin", Memr[x])
call ic_putr (ic, "xmax", Memr[x+nx-1])
# If the interactive flag is set then use icg_fit to set the
# fitting parameters. Get_fitline returns EOF when the user
# is done. The weights are reset since the user may delete
# points.
if (interactive) {
call clgstr ("graphics", graphics, SZ_FNAME)
gp = gopen ("stdgraph", NEW_FILE, STDGRAPH)
i = strlen (title)
while (lf_getline (ic, gt, in, indata, inline, title)!=EOF) {
title[i + 1] = EOS
call icg_fit (ic, gp, "cursor", gt, cv, Memr[x], Memr[indata],
Memr[wts], nx)
call amovkr (1., Memr[wts], nx)
}
call gclose (gp)
}
# Loop through each input image line and create an output image line.
new = YES
call amovkl (long(1), inline, IM_MAXDIM)
call amovkl (long(1), outline, IM_MAXDIM)
while (imgnlr (in, indata, inline) != EOF) {
if (impnlr (out, outdata, outline) == EOF)
call error (0, "Error writing output image")
call ic_fit (ic, cv, Memr[x], Memr[indata], Memr[wts],
nx, new, YES, new, new)
new = NO
call ic_clean (ic, cv, Memr[x], Memr[indata], Memr[wts], nx)
call amovr (Memr[indata], Memr[outdata], nx)
}
call cvfree (cv)
call sfree (sp)
end
# LC_IMMAP -- Map images for lineclean.
procedure lc_immap (input, output, in, out)
char input[ARB] # Input image
char output[ARB] # Output image
pointer in # Input IMIO pointer
pointer out # Output IMIO pointer
pointer sp, root, sect
int imaccess()
pointer immap()
begin
# Get the root name and section of the input image.
call smark (sp)
call salloc (root, SZ_FNAME, TY_CHAR)
call salloc (sect, SZ_FNAME, TY_CHAR)
call get_root (input, Memc[root], SZ_FNAME)
call get_section (input, Memc[sect], SZ_FNAME)
# If the output image is not accessible then create it as a new copy
# of the full input image.
if (imaccess (output, 0) == NO)
call img_imcopy (Memc[root], output, false)
# Map the input and output images.
in = immap (input, READ_ONLY, 0)
call sprintf (Memc[root], SZ_FNAME, "%s%s")
call pargstr (output)
call pargstr (Memc[sect])
out = immap (Memc[root], READ_WRITE, 0)
call sfree (sp)
end
# LF_GETLINE -- Get an image line to be fit interactively. Return EOF
# when the user enters EOF or CR. Default line is the first line and
# the out of bounds lines are silently limited to the nearest in bounds line.
int procedure lf_getline (ic, gt, im, data, v, title)
pointer ic # ICFIT pointer
pointer gt # GTOOLS pointer
pointer im # IMIO pointer
pointer data # Image data
long v[ARB] # Image line vector
char title[ARB] # Title
int i
char line[SZ_LINE]
int getline(), nscan(), imgnlr()
begin
call sprintf (title, SZ_LINE, "%s: Fit line =")
call pargstr (title)
call printf ("%s ")
call pargstr (title)
call flush (STDOUT)
if (getline(STDIN, line) == EOF)
return (EOF)
call sscan (line)
call amovkl (long (1), v, IM_MAXDIM)
do i = 2, max (2, IM_NDIM(im)) {
call gargl (v[i])
if (nscan() == 0)
return (EOF)
else if (nscan() != i - 1)
break
if (IM_NDIM(im) == 1)
v[i] = 1
else
v[i] = max (1, min (IM_LEN(im, i), v[i]))
call sprintf (title, SZ_LINE, "%s %d")
call pargstr (title)
call pargl (v[i])
}
call sprintf (title, SZ_LINE, "%s\n%s")
call pargstr (title)
call pargstr (IM_TITLE(im))
call ic_pstr (ic, "xlabel", "Column")
call gt_sets (gt, GTTITLE, title)
return (imgnlr (im, data, v))
end
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