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include <imhdr.h>
include <pmset.h>
include "xtfixpix.h"
$for (silrd)
# XT_FP -- Get the specified line of image data and replace bad pixels by
# interpolation.
pointer procedure xt_fp$t (fp, im, line, fd)
pointer fp #I FIXPIX pointer
pointer im #I Image pointer
int line #I Line
int fd #I File descriptor for pixel list
int col1, col2 #I Section of interest
int line1, line2 #I Section of interest
pointer imgl2$t(), xt_fps$t()
begin
# If there are no bad pixels just get the image line and return.
if (fp == NULL)
return (imgl2$t (im, line))
col1 = 1
col2 = IM_LEN(im,1)
line1 = 1
line2 = IM_LEN(im,2)
return (xt_fps$t (fp, im, line, col1, col2, line1, line2, fd))
end
# XT_FXS -- Get the specified line of image data and replace bad pixels by
# interpolation within a specified section.
pointer procedure xt_fps$t (fp, im, line, col1, col2, line1, line2, fd)
pointer fp #I FIXPIX pointer
pointer im #I Image pointer
int line #I Line
int fd #I File descriptor for pixel list
int col1, col2 #I Section of interest
int line1, line2 #I Section of interest
int i, j, nc, nl, ncols, c1, c2, l1, l2, l3, l4
long v[IM_MAXDIM]
$if (datatype == silr)
real a, b, c, d, val
$else
PIXEL a, b, c, d, val
$endif
PIXEL indef
pointer pm, data, bp
bool pm_linenotempty()
pointer imgl2$t(), xt_fpval$t()
begin
# If there are no bad pixels just get the image line and return.
if (fp == NULL)
return (imgl2$t (im, line))
# Initialize
pm = FP_PM(fp)
nc = IM_LEN(im,1)
nl = IM_LEN(im,2)
ncols = FP_NCOLS(fp)
call amovkl (long(1), v, IM_MAXDIM)
v[2] = line
# If there might be column interpolation initialize value arrays.
if (ncols > 0 && FP_PV1(fp) == NULL) {
FP_PIXTYPE(fp) = TY_PIXEL
call malloc (FP_PV1(fp), ncols, FP_PIXTYPE(fp))
call malloc (FP_PV2(fp), ncols, FP_PIXTYPE(fp))
indef = INDEF
call amovk$t (indef, Mem$t[FP_V1(fp,1)], ncols)
call amovk$t (indef, Mem$t[FP_V2(fp,1)], ncols)
}
# If there are no bad pixels in the line and the line contains
# no column interpolation endpoints return the data directly.
# Otherwise get the line and fill in any endpoints that may
# be used later.
if (!pm_linenotempty (pm, v)) {
if (line < FP_LMIN(fp) || line > FP_LMAX(fp))
return (imgl2$t (im, line))
else
return (xt_fpval$t (fp, im, line))
}
# Get the pixel mask.
call malloc (bp, nc, TY_SHORT)
call pmglps (pm, v, Mems[bp], 0, nc, PIX_SRC)
bp = bp - 1
# Check if any column interpolation endpoints are needed and
# set them. Set any other endpoints on the same lines at
# the same time.
if (line >= FP_LMIN(fp) && line < FP_LMAX(fp)) {
j = 1
do i = col1, col2 {
if (Mems[bp+i] == FP_CVAL(fp)) {
for (; j<=ncols && FP_COL(fp,j)!=i; j=j+1)
;
for (; j<=ncols && FP_COL(fp,j)==i; j=j+1) {
if (line>FP_L1(fp,j) && line<FP_L2(fp,j)) {
if (IS_INDEF(Mem$t[FP_V1(fp,j)]))
data = xt_fpval$t (fp, im, FP_L1(fp,j))
if (IS_INDEF(Mem$t[FP_V2(fp,j)]))
data = xt_fpval$t (fp, im, FP_L2(fp,j))
}
}
}
}
}
# Fix pixels by column or line interpolation.
if (FP_DATA(fp) == NULL) {
FP_PIXTYPE(fp) = TY_PIXEL
call malloc (FP_DATA(fp), nc, FP_PIXTYPE(fp))
}
data = FP_DATA(fp)
call amov$t (Mem$t[xt_fpval$t(fp,im,line)], Mem$t[data], nc)
j = 1
for (c1=col1; c1<=col2 && Mems[bp+c1]==0; c1=c1+1)
;
while (c1 <= col2) {
c1 = c1 - 1
for (c2=c1+2; c2<=col2 && Mems[bp+c2]!=0; c2=c2+1)
;
a = INDEF
do i = c1+1, c2-1 {
if (Mems[bp+i] == FP_LVAL(fp)) {
if (IS_INDEF(a)) {
if (c1 < col1 && c2 > col2) {
c1 = c2 + 1
next
}
if (c1 >= col1)
a = Mem$t[data+c1-1]
else
a = Mem$t[data+c2-1]
if (c2 <= col2)
b = (Mem$t[data+c2-1] - a) / (c2 - c1)
else
b = 0.
}
val = a + b * (i - c1)
if (fd != NULL) {
call fprintf (fd, "%4d %4d %8g %8g")
call pargi (i)
call pargi (line)
call parg$t (Mem$t[data+i-1])
$if (datatype == silr)
call pargr (val)
$else
call parg$t (val)
$endif
if (c1 >= col1) {
call fprintf (fd, " %4d %4d")
call pargi (c1)
call pargi (line)
}
if (c2 <= col2) {
call fprintf (fd, " %4d %4d")
call pargi (c2)
call pargi (line)
}
call fprintf (fd, "\n")
}
} else {
for (; j<=ncols && FP_COL(fp,j)!=i; j=j+1)
;
for (; j<=ncols && FP_COL(fp,j)==i; j=j+1) {
l1 = FP_L1(fp,j)
l2 = FP_L2(fp,j)
if (l1 < line1 && l2 > line2)
next
if (line > l1 && line < l2) {
if (l1 >= line1)
c = Mem$t[FP_V1(fp,j)]
else
c = Mem$t[FP_V2(fp,j)]
if (l2 <= line2) {
d = (Mem$t[FP_V2(fp,j)] - c) / (l2 - l1)
val = c + d * (line - l1)
} else
val = c
l3 = l1
l4 = l2
}
}
if (fd != NULL) {
call fprintf (fd, "%4d %4d %8g %8g")
call pargi (i)
call pargi (line)
call parg$t (Mem$t[data+i-1])
$if (datatype == silr)
call pargr (val)
$else
call parg$t (val)
$endif
if (l1 >= line1) {
call fprintf (fd, " %4d %4d")
call pargi (i)
call pargi (l3)
}
if (l2 <= line2) {
call fprintf (fd, " %4d %4d")
call pargi (i)
call pargi (l4)
}
call fprintf (fd, "\n")
}
}
$if (datatype == sil)
Mem$t[data+i-1] = nint (val)
$else
Mem$t[data+i-1] = val
$endif
}
for (c1=c2+1; c1<=col2 && Mems[bp+c1]==0; c1=c1+1)
;
}
call mfree (bp, TY_SHORT)
return (data)
end
# XT_FPVAL -- Get data for the specified line and set the values for
# all column interpolation endpoints which occur at that line.
pointer procedure xt_fpval$t (fp, im, line)
pointer fp #I FIXPIX pointer
pointer im #I Image pointer
int line #I Line
int i
pointer data, imgl2$t()
begin
# Set out of bounds values to 0. These are not used but we need
# to cancel the INDEF values.
if (line < 1 || line > IM_LEN(im,2)) {
do i = 1, FP_NCOLS(fp) {
if (line == FP_L1(fp,i))
Mem$t[FP_V1(fp,i)] = 0.
else if (line == FP_L2(fp,i))
Mem$t[FP_V2(fp,i)] = 0.
}
return (NULL)
}
data = imgl2$t (im, line)
do i = 1, FP_NCOLS(fp) {
if (line == FP_L1(fp,i))
Mem$t[FP_V1(fp,i)] = Mem$t[data+FP_COL(fp,i)-1]
else if (line == FP_L2(fp,i))
Mem$t[FP_V2(fp,i)] = Mem$t[data+FP_COL(fp,i)-1]
}
return (data)
end
$endfor
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