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include <imhdr.h>
include <imset.h>
define SCANTYPES "|shortscan|longscan|"
define SHORTSCAN 1 # Short scan accumulation, normal readout
define LONGSCAN 2 # Long scan continuous readout
# SCANCOR -- Create a scanned image from an unscanned image.
procedure scancor (input, output, nscan, minreplace)
char input[ARB] # Input image
char output[ARB] # Output image (must be new image)
int nscan # Number of scan lines
real minreplace # Minmum value of output
int scantype # Type of scan format
int readaxis # Readout axis
int clgwrd()
pointer sp, str, in, out, immap()
errchk immap
begin
call smark (sp)
call salloc (str, SZ_LINE, TY_CHAR)
# Determine readout axis and create the temporary output image.
scantype = clgwrd ("scantype", Memc[str], SZ_LINE, SCANTYPES)
readaxis = clgwrd ("readaxis", Memc[str], SZ_LINE, "|lines|columns|")
# Make the output scanned image.
in = immap (input, READ_ONLY, 0)
call set_output (in, out, output)
switch (scantype) {
case SHORTSCAN:
call shortscan (in, out, nscan, minreplace, readaxis)
case LONGSCAN:
call longscan (in, out, readaxis)
}
# Log the operation.
switch (scantype) {
case SHORTSCAN:
call sprintf (Memc[str], SZ_LINE,
"Converted to shortscan from %s with nscan=%d")
call pargstr (input)
call pargi (nscan)
call hdmputi (out, "nscanrow", nscan)
case LONGSCAN:
call sprintf (Memc[str], SZ_LINE, "Converted to longscan from %s")
call pargstr (input)
}
call timelog (Memc[str], SZ_LINE)
call ccdlog (out, Memc[str])
call hdmpstr (out, "scancor", Memc[str])
call imunmap (in)
call imunmap (out)
call sfree (sp)
end
# SHORTSCAN -- Make a shortscan mode image by using a moving average.
#
# NOTE!! The value of nscan used here is increased by 1 because the
# current information in the image header is actually the number of
# scan steps and NOT the number of rows.
procedure shortscan (in, out, nscan, minreplace, readaxis)
pointer in # Input image
pointer out # Output image
int nscan # Number of lines scanned before readout
real minreplace # Minimum output value
int readaxis # Readout axis
bool replace
real nscanr, sum, mean, asumr()
int i, j, k, l, len1, len2, nc, nl, nscani, c1, c2, cs, l1, l2, ls
pointer sp, str, bufs, datain, dataout, data, imgl2r(), impl2r()
long clktime()
errchk malloc, calloc
begin
call smark (sp)
call salloc (str, SZ_LINE, TY_CHAR)
# The default data section is the entire image.
len1 = IM_LEN(in,1)
len2 = IM_LEN(in,2)
c1 = 1
c2 = len1
cs = 1
l1 = 1
l2 = len2
ls = 1
call hdmgstr (in, "datasec", Memc[str], SZ_LINE)
call ccd_section (Memc[str], c1, c2, cs, l1, l2, ls)
if ((c1<1)||(c2>len1)||(l1<1)||(l2>len2)||(cs!=1)||(ls!=1))
call error (0, "Error in DATASEC parameter")
nc = c2 - c1 + 1
nl = l2 - l1 + 1
# Copy initial lines.
do i = 1, l1 - 1
call amovr (Memr[imgl2r(in,i)], Memr[impl2r(out,i)], len1)
replace = !IS_INDEF(minreplace)
mean = 0.
switch (readaxis) {
case 1:
nscani = max (1, min (nscan, nl) + 1)
nscanr = nscani
call imseti (in, IM_NBUFS, nscani)
call malloc (bufs, nscani, TY_INT)
call calloc (data, nc, TY_REAL)
j = 1
k = 1
l = 1
# Ramp up
while (j <= nscani) {
i = j + l1 - 1
datain = imgl2r (in, i)
if (nc < len1)
call amovr (Memr[datain], Memr[impl2r(out,i)], len1)
datain = datain + c1 - 1
Memi[bufs+mod(j,nscani)] = datain
call aaddr (Memr[data], Memr[datain], Memr[data], nc)
j = j + 1
}
dataout = impl2r (out, l+l1-1) + c1 - 1
call adivkr (Memr[data], nscanr, Memr[dataout], nc)
if (replace)
call amaxkr (Memr[dataout], minreplace, Memr[dataout], nc)
mean = mean + asumr (Memr[dataout], nc)
l = l + 1
# Moving average
while (j <= nl) {
datain = Memi[bufs+mod(k,nscani)]
call asubr (Memr[data], Memr[datain], Memr[data], nc)
i = j + l1 - 1
datain = imgl2r (in, i)
if (nc < len1)
call amovr (Memr[datain], Memr[impl2r(out,i)], len1)
datain = datain + c1 - 1
Memi[bufs+mod(j,nscani)] = datain
call aaddr (Memr[data], Memr[datain], Memr[data], nc)
dataout = impl2r (out, l+l1-1) + c1 - 1
call adivkr (Memr[data], nscanr, Memr[dataout], nc)
if (replace)
call amaxkr (Memr[dataout], minreplace, Memr[dataout], nc)
mean = mean + asumr (Memr[dataout], nc)
j = j + 1
k = k + 1
l = l + 1
}
# Ramp down.
while (l <= nl) {
datain = Memi[bufs+mod(k,nscani)]
call asubr (Memr[data], Memr[datain], Memr[data], nc)
dataout = impl2r (out, l+l1-1) + c1 - 1
call adivkr (Memr[data], nscanr, Memr[dataout], nc)
if (replace)
call amaxkr (Memr[dataout], minreplace, Memr[dataout], nc)
mean = mean + asumr (Memr[dataout], nc)
k = k + 1
l = l + 1
}
call mfree (bufs, TY_INT)
call mfree (data, TY_REAL)
case 2:
nscani = max (1, min (nscan, nc) + 1)
nscanr = nscani
do i = 1, nl {
datain = imgl2r (in, i + l1 - 1)
datain = datain + c1 - 1
data = impl2r (out, i + l1 - 1)
call amovr (Memr[datain], Memr[data], len1)
datain = datain + c1 - 1
data = data + c1 - 1
sum = 0
j = 0
k = 0
l = 0
# Ramp up
while (j < nscani) {
sum = sum + Memr[datain+j]
j = j + 1
}
if (replace)
Memr[data] = max (minreplace, sum / nscani)
else
Memr[data] = sum / nscani
mean = mean + Memr[data]
l = l + 1
# Moving average
while (j < nl) {
sum = sum + Memr[datain+j] - Memr[datain+k]
if (replace)
Memr[data+l] = max (minreplace, sum / nscani)
else
Memr[data+l] = sum / nscani
mean = mean + Memr[data+l]
j = j + 1
k = k + 1
l = l + 1
}
# Ramp down
while (l < nl) {
sum = sum - Memr[datain+k]
if (replace)
Memr[data+l] = max (minreplace, sum / nscani)
else
Memr[data+l] = sum / nscani
mean = mean + Memr[data+l]
k = k + 1
l = l + 1
}
}
}
# Copy final lines.
do i = l2+1, len2
call amovr (Memr[imgl2r(in,i)], Memr[impl2r(out,i)], len1)
mean = mean / nc / nl
call hdmputr (out, "ccdmean", mean)
call hdmputi (out, "ccdmeant", int (clktime (long (0))))
call sfree (sp)
end
# LONGSCAN -- Make a longscan mode readout flat field correction by averaging
# across the readout axis.
procedure longscan (in, out, readaxis)
pointer in # Input image
pointer out # Output image
int readaxis # Readout axis
int i, nc, nl, c1, c2, cs, l1, l2, ls
int in_c1, in_c2, in_l1, in_l2, ccd_c1, ccd_c2, ccd_l1, ccd_l2
real mean, asumr()
long clktime()
pointer sp, str, data, imgl2r(), impl2r(), imps2r()
begin
call smark (sp)
call salloc (str, SZ_LINE, TY_CHAR)
# The default data section is the entire image.
nc = IM_LEN(in,1)
nl = IM_LEN(in,2)
c1 = 1
c2 = nc
cs = 1
l1 = 1
l2 = nl
ls = 1
call hdmgstr (in, "datasec", Memc[str], SZ_LINE)
call ccd_section (Memc[str], c1, c2, cs, l1, l2, ls)
if ((c1<1)||(c2>nc)||(l1<1)||(l2>nl)||(cs!=1)||(ls!=1))
call error (0, "Error in DATASEC parameter")
in_c1 = c1
in_c2 = c2
in_l1 = l1
in_l2 = l2
# The default ccd section is the data section.
call hdmgstr (in, "ccdsec", Memc[str], SZ_LINE)
call ccd_section (Memc[str], c1, c2, cs, l1, l2, ls)
if ((cs != 1) || (ls != 1))
call error (0, "Error in CCDSEC parameter")
ccd_c1 = c1
ccd_c2 = c2
ccd_l1 = l1
ccd_l2 = l2
if ((in_c2-in_c1 != ccd_c2-ccd_c1) || (in_l2-in_l1 != ccd_l2-ccd_l1))
call error (0, "Size of DATASEC and CCDSEC do not agree")
switch (readaxis) {
case 1:
IM_LEN(out,2) = 1
data = impl2r (out, 1)
call aclrr (Memr[data], nc)
nc = in_c2 - in_c1 + 1
nl = in_l2 - in_l1 + 1
data = data + in_c1 - 1
do i = in_l1, in_l2
call aaddr (Memr[imgl2r(in,i)+in_c1-1], Memr[data],
Memr[data], nc)
call adivkr (Memr[data], real (nl), Memr[data], nc)
call sprintf (Memc[str], SZ_LINE, "[%d:%d,1:1]")
call pargi (in_c1)
call pargi (in_c2)
call hdmpstr (out, "datasec", Memc[str])
call sprintf (Memc[str], SZ_LINE, "[%d:%d,*]")
call pargi (ccd_c1)
call pargi (ccd_c2)
call hdmpstr (out, "ccdsec", Memc[str])
mean = asumr (Memr[data], nc) / nl
case 2:
IM_LEN(out,1) = 1
data = imps2r (out, 1, 1, 1, nl)
call aclrr (Memr[data], nl)
nc = in_c2 - in_c1 + 1
nl = in_l2 - in_l1 + 1
do i = in_l1, in_l2
Memr[data+i-1] = asumr (Memr[imgl2r(in,i)+in_c1-1], nc) / nc
call sprintf (Memc[str], SZ_LINE, "[1:1,%d:%d]")
call pargi (in_l1)
call pargi (in_l2)
call hdmpstr (out, "datasec", Memc[str])
call sprintf (Memc[str], SZ_LINE, "[*,%d:%d]")
call pargi (ccd_l1)
call pargi (ccd_l2)
call hdmpstr (out, "ccdsec", Memc[str])
mean = asumr (Memr[data], nl) / nc
}
call hdmputr (out, "ccdmean", mean)
call hdmputi (out, "ccdmeant", int (clktime (long (0))))
call sfree (sp)
end
|
