1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
include <imhdr.h>
# T_BADPIXIMAGE -- Create a bad pixel image mask from a bad pixel file.
procedure t_badpiximage ()
pointer bpfile # Bad pixel file
pointer bpimage # Bad pixel image
pointer template # Template image
short goodval, badval # Good and bad values
int i, nc, nl, c1, c2, l1, l2, fd, x1, x2, xstep, y1, y2, ystep
pointer sp, str, im, im1
short clgets()
pointer immap(), impl2s(), imps2s()
int open(), fscan(), nscan(), stridxs(), strmatch()
errchk open, immap
begin
call smark (sp)
call salloc (bpfile, SZ_FNAME, TY_CHAR)
call salloc (bpimage, SZ_FNAME, TY_CHAR)
call salloc (template, SZ_FNAME, TY_CHAR)
call salloc (str, SZ_LINE, TY_CHAR)
# Get task parameters.
call clgstr ("fixfile", Memc[bpfile], SZ_FNAME)
call clgstr ("template", Memc[template], SZ_FNAME)
call clgstr ("image", Memc[bpimage], SZ_FNAME)
goodval = clgets ("goodvalue")
badval = clgets ("badvalue")
# Open the files and abort on an error.
fd = open (Memc[bpfile], READ_ONLY, TEXT_FILE)
im1 = immap (Memc[template], READ_ONLY, 0)
im = immap (Memc[bpimage], NEW_COPY, im1)
# Set the output image.
IM_PIXTYPE(im) = TY_SHORT
call sprintf (IM_TITLE(im), SZ_IMTITLE,
"Bad pixel image from bad pixel file %s")
call pargstr (Memc[bpfile])
# Set the good pixel values.
nc = IM_LEN(im,1)
nl = IM_LEN(im,2)
do i = 1, nl
call amovks (goodval, Mems[impl2s(im,i)], nc)
# Set the bad pixel values. By default the bad pixel coordinates
# refer to the image directly but if the word "untrimmed" appears
# in a comment then the coordinates refer to the untrimmed image.
# This is the same algorithm as used in SETFIXPIX for CCDPROC.
x1 = 1
xstep = 1
y1 = 1
ystep = 1
while (fscan (fd) != EOF) {
call gargwrd (Memc[str], SZ_LINE)
if (Memc[str] == '#') {
call gargstr (Memc[str], SZ_LINE)
if (strmatch (Memc[str], "{untrimmed}") != 0) {
ifnoerr (call imgstr (im, "trim", Memc[str], SZ_LINE)) {
x2 = stridxs ("[", Memc[str])
if (x2 != 0) {
x1 = 1
x2 = IM_LEN(im,1)
xstep = 1
y1 = 1
y2 = IM_LEN(im,2)
ystep = 1
call ccd_section (Memc[str+x2-1], x1, x2, xstep,
y1, y2, ystep)
}
}
}
next
}
call reset_scan()
call gargi (c1)
call gargi (c2)
call gargi (l1)
call gargi (l2)
if (nscan() != 4) {
if (nscan() == 2) {
l1 = c2
c2 = c1
l2 = l1
} else
next
}
c1 = max (1, (c1 - x1 + xstep - 1) / xstep + 1)
c2 = min (nc, (c2 - x1) / xstep + 1)
l1 = max (1, (l1 - y1 + ystep - 1) / ystep + 1)
l2 = min (nl, (l2 - y1) / ystep + 1)
if ((c1 > c2) || (l1 > l2))
next
i = (c2 - c1 + 1) * (l2 - l1 + 1)
call amovks (badval, Mems[imps2s(im,c1,c2,l1,l2)], i)
}
# Finish up.
call imunmap (im)
call imunmap (im1)
call close (fd)
end
include <ctype.h>
# CCD_SECTION -- Parse a 2D image section into its elements.
# 1. The default values must be set by the caller.
# 2. A null image section is OK.
# 3. The first nonwhitespace character must be '['.
# 4. The last interpreted character must be ']'.
#
# This procedure should be replaced with an IMIO procedure at some
# point.
procedure ccd_section (section, x1, x2, xstep, y1, y2, ystep)
char section[ARB] # Image section
int x1, x2, xstep # X image section parameters
int y1, y2, ystep # X image section parameters
int i, ip, a, b, c, temp, ctoi()
define error_ 99
begin
# Decode the section string.
ip = 1
while (IS_WHITE(section[ip]))
ip = ip + 1
if (section[ip] == '[')
ip = ip + 1
else if (section[ip] == EOS)
return
else
goto error_
do i = 1, 2 {
while (IS_WHITE(section[ip]))
ip = ip + 1
# Default values
if (i == 1) {
a = x1
b = x2
c = xstep
} else {
a = y1
b = y2
c = ystep
}
# Get a:b:c. Allow notation such as "-*:c"
# (or even "-:c") where the step is obviously negative.
if (ctoi (section, ip, temp) > 0) { # a
a = temp
if (section[ip] == ':') {
ip = ip + 1
if (ctoi (section, ip, b) == 0) # a:b
goto error_
} else
b = a
} else if (section[ip] == '-') { # -*
temp = a
a = b
b = temp
ip = ip + 1
if (section[ip] == '*')
ip = ip + 1
} else if (section[ip] == '*') # *
ip = ip + 1
if (section[ip] == ':') { # ..:step
ip = ip + 1
if (ctoi (section, ip, c) == 0)
goto error_
else if (c == 0)
goto error_
}
if (a > b && c > 0)
c = -c
if (i == 1) {
x1 = a
x2 = b
xstep = c
} else {
y1 = a
y2 = b
ystep = c
}
while (IS_WHITE(section[ip]))
ip = ip + 1
if (section[ip] == ',')
ip = ip + 1
}
if (section[ip] != ']')
goto error_
return
error_
call error (0, "Error in image section specification")
end
|
