1 |
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/* Copyright (c) 1995 Regents of the University of California */ |
2 |
– |
|
1 |
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
– |
|
4 |
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/* |
5 |
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* Calibrate a scanned MacBeth Color Checker Chart |
6 |
|
* |
7 |
< |
* Produce a .cal file suitable for use with pcomb. |
7 |
> |
* Produce a .cal file suitable for use with pcomb, |
8 |
> |
* or .cwp file suitable for use with pcwarp. |
9 |
> |
* |
10 |
> |
* Warping code depends on conformance of COLOR and W3VEC types. |
11 |
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*/ |
12 |
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|
13 |
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#include <stdio.h> |
14 |
< |
#ifdef MSDOS |
15 |
< |
#include <fcntl.h> |
16 |
< |
#endif |
14 |
> |
#include <math.h> |
15 |
> |
#include <time.h> |
16 |
> |
|
17 |
> |
#include "platform.h" |
18 |
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#include "color.h" |
19 |
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#include "resolu.h" |
20 |
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#include "pmap.h" |
21 |
+ |
#include "warp3d.h" |
22 |
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|
23 |
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/* MacBeth colors */ |
24 |
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#define DarkSkin 0 |
79 |
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#define NMBNEU 6 /* Number of MacBeth neutral colors */ |
80 |
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short mbneu[NMBNEU] = {Black,Neutral35,Neutral5,Neutral65,Neutral8,White}; |
81 |
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|
82 |
< |
#define NMBMOD 16 /* Number of MacBeth unsaturated colors */ |
83 |
< |
short mbmod[NMBMOD] = { |
82 |
< |
DarkSkin,LightSkin,BlueSky,Foliage,BlueFlower,BluishGreen, |
83 |
< |
PurplishBlue,ModerateRed,YellowGreen,OrangeYellow, |
84 |
< |
Black,Neutral35,Neutral5,Neutral65,Neutral8,White |
85 |
< |
}; |
82 |
> |
#define NEUFLGS (1L<<White|1L<<Neutral8|1L<<Neutral65| \ |
83 |
> |
1L<<Neutral5|1L<<Neutral35|1L<<Black) |
84 |
|
|
85 |
< |
#define NMBSAT 8 /* Number of MacBeth saturated colors */ |
86 |
< |
short mbsat[NMBSAT] = { |
87 |
< |
Red,Green,Blue,Magenta,Yellow,Cyan, |
90 |
< |
Orange,Purple |
91 |
< |
}; |
85 |
> |
#define SATFLGS (1L<<Red|1L<<Green|1L<<Blue|1L<<Magenta|1L<<Yellow| \ |
86 |
> |
1L<<Cyan|1L<<Orange|1L<<Purple|1L<<PurplishBlue| \ |
87 |
> |
1L<<YellowGreen|1<<OrangeYellow|1L<<BlueFlower) |
88 |
|
|
89 |
+ |
#define UNSFLGS (1L<<DarkSkin|1L<<LightSkin|1L<<BlueSky|1L<<Foliage| \ |
90 |
+ |
1L<<BluishGreen|1L<<ModerateRed) |
91 |
+ |
|
92 |
+ |
#define REQFLGS NEUFLGS /* need these colors */ |
93 |
+ |
#define MODFLGS (NEUFLGS|UNSFLGS) /* should be in gamut */ |
94 |
+ |
|
95 |
+ |
#define RG_BORD 0 /* patch border */ |
96 |
+ |
#define RG_CENT 01 /* central region of patch */ |
97 |
+ |
#define RG_ORIG 02 /* original color region */ |
98 |
+ |
#define RG_CORR 04 /* corrected color region */ |
99 |
+ |
|
100 |
+ |
#ifndef DISPCOM |
101 |
+ |
#define DISPCOM "ximage -op %s" |
102 |
+ |
#endif |
103 |
+ |
|
104 |
+ |
int scanning = 1; /* scanned input (or recorded output)? */ |
105 |
+ |
double irrad = 1.0; /* irradiance multiplication factor */ |
106 |
+ |
int rawmap = 0; /* put out raw color mapping? */ |
107 |
+ |
|
108 |
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int xmax, ymax; /* input image dimensions */ |
109 |
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int bounds[4][2]; /* image coordinates of chart corners */ |
110 |
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double imgxfm[3][3]; /* coordinate transformation matrix */ |
111 |
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|
112 |
< |
COLOR picRGB[24]; /* picture colors */ |
112 |
> |
COLOR inpRGB[24]; /* measured or scanned input colors */ |
113 |
> |
long inpflags = 0; /* flags of which colors were input */ |
114 |
> |
long gmtflags = 0; /* flags of out-of-gamut colors */ |
115 |
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|
116 |
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COLOR bramp[NMBNEU][2]; /* brightness ramp (per primary) */ |
117 |
< |
double solmat[3][3]; /* color mapping matrix */ |
117 |
> |
COLORMAT solmat; /* color mapping matrix */ |
118 |
> |
COLOR colmin, colmax; /* gamut limits */ |
119 |
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|
120 |
+ |
WARP3D *wcor = NULL; /* color space warp */ |
121 |
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|
122 |
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FILE *debugfp = NULL; /* debug output picture */ |
123 |
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char *progname; |
124 |
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|
105 |
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extern char *malloc(); |
125 |
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|
107 |
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|
126 |
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main(argc, argv) |
127 |
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int argc; |
128 |
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char **argv; |
130 |
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int i; |
131 |
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|
132 |
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progname = argv[0]; |
133 |
< |
if (argc > 2 && !strcmp(argv[1], "-d")) { /* debug output */ |
134 |
< |
if ((debugfp = fopen(argv[2], "w")) == NULL) { |
135 |
< |
perror(argv[2]); |
136 |
< |
exit(1); |
133 |
> |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
134 |
> |
switch (argv[i][1]) { |
135 |
> |
case 'd': /* debug output */ |
136 |
> |
i++; |
137 |
> |
if (badarg(argc-i, argv+i, "s")) |
138 |
> |
goto userr; |
139 |
> |
if ((debugfp = fopen(argv[i], "w")) == NULL) { |
140 |
> |
perror(argv[i]); |
141 |
> |
exit(1); |
142 |
> |
} |
143 |
> |
SET_FILE_BINARY(debugfp); |
144 |
> |
newheader("RADIANCE", debugfp); /* start */ |
145 |
> |
printargs(argc, argv, debugfp); /* header */ |
146 |
> |
break; |
147 |
> |
case 'p': /* picture position */ |
148 |
> |
if (badarg(argc-i-1, argv+i+1, "iiiiiiii")) |
149 |
> |
goto userr; |
150 |
> |
bounds[0][0] = atoi(argv[++i]); |
151 |
> |
bounds[0][1] = atoi(argv[++i]); |
152 |
> |
bounds[1][0] = atoi(argv[++i]); |
153 |
> |
bounds[1][1] = atoi(argv[++i]); |
154 |
> |
bounds[2][0] = atoi(argv[++i]); |
155 |
> |
bounds[2][1] = atoi(argv[++i]); |
156 |
> |
bounds[3][0] = atoi(argv[++i]); |
157 |
> |
bounds[3][1] = atoi(argv[++i]); |
158 |
> |
scanning = 2; |
159 |
> |
break; |
160 |
> |
case 'P': /* pick position */ |
161 |
> |
scanning = 3; |
162 |
> |
break; |
163 |
> |
case 'i': /* irradiance factor */ |
164 |
> |
i++; |
165 |
> |
if (badarg(argc-i, argv+i, "f")) |
166 |
> |
goto userr; |
167 |
> |
irrad = atof(argv[i]); |
168 |
> |
break; |
169 |
> |
case 'm': /* raw map output */ |
170 |
> |
rawmap = 1; |
171 |
> |
break; |
172 |
> |
case 'c': /* color input */ |
173 |
> |
scanning = 0; |
174 |
> |
break; |
175 |
> |
default: |
176 |
> |
goto userr; |
177 |
|
} |
178 |
< |
#ifdef MSDOS |
179 |
< |
setmode(fileno(debugfp), O_BINARY); |
180 |
< |
#endif |
123 |
< |
newheader("RADIANCE", debugfp); |
124 |
< |
printargs(argc, argv, debugfp); |
125 |
< |
argv += 2; |
126 |
< |
argc -= 2; |
127 |
< |
} |
128 |
< |
if (argc != 3 && argc != 11) |
129 |
< |
goto userr; |
130 |
< |
if (strcmp(argv[1], "-") && freopen(argv[1], "r", stdin) == NULL) { |
131 |
< |
perror(argv[1]); |
178 |
> |
/* open files */ |
179 |
> |
if (i < argc && freopen(argv[i], "r", stdin) == NULL) { |
180 |
> |
perror(argv[i]); |
181 |
|
exit(1); |
182 |
|
} |
183 |
< |
if (strcmp(argv[2], "-") && freopen(argv[2], "w", stdout) == NULL) { |
184 |
< |
perror(argv[2]); |
183 |
> |
if (i+1 < argc && freopen(argv[i+1], "w", stdout) == NULL) { |
184 |
> |
perror(argv[i+1]); |
185 |
|
exit(1); |
186 |
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} |
187 |
< |
#ifdef MSDOS |
188 |
< |
setmode(fileno(stdin), O_BINARY); |
189 |
< |
#endif |
190 |
< |
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
191 |
< |
fgetresolu(&xmax, &ymax, stdin) < 0) { |
192 |
< |
fprintf(stderr, "%s: bad input picture\n", progname); |
193 |
< |
exit(1); |
194 |
< |
} |
195 |
< |
/* get chart boundaries */ |
147 |
< |
if (argc == 11) { |
148 |
< |
for (i = 0; i < 4; i++) { |
149 |
< |
if (!isint(argv[2*i+3]) | !isint(argv[2*i+4])) |
187 |
> |
if (scanning) { /* load input picture header */ |
188 |
> |
SET_FILE_BINARY(stdin); |
189 |
> |
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
190 |
> |
fgetresolu(&xmax, &ymax, stdin) < 0) { |
191 |
> |
fprintf(stderr, "%s: bad input picture\n", progname); |
192 |
> |
exit(1); |
193 |
> |
} |
194 |
> |
if (scanning == 3) { |
195 |
> |
if (i >= argc) |
196 |
|
goto userr; |
197 |
< |
bounds[i][0] = atoi(argv[2*i+3]); |
198 |
< |
bounds[i][1] = atoi(argv[2*i+4]); |
197 |
> |
pickchartpos(argv[i]); |
198 |
> |
scanning = 2; |
199 |
|
} |
200 |
< |
} else { |
200 |
> |
} else { /* else set default xmax and ymax */ |
201 |
> |
xmax = 512; |
202 |
> |
ymax = 2*512/3; |
203 |
> |
} |
204 |
> |
if (scanning != 2) { /* use default boundaries */ |
205 |
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bounds[0][0] = bounds[2][0] = .029*xmax + .5; |
206 |
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bounds[0][1] = bounds[1][1] = .956*ymax + .5; |
207 |
|
bounds[1][0] = bounds[3][0] = .971*xmax + .5; |
208 |
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bounds[2][1] = bounds[3][1] = .056*ymax + .5; |
209 |
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} |
210 |
|
init(); /* initialize */ |
211 |
< |
getcolors(); /* get picture colors */ |
211 |
> |
if (scanning) /* get picture colors */ |
212 |
> |
getpicture(); |
213 |
> |
else |
214 |
> |
getcolors(); |
215 |
|
compute(); /* compute color mapping */ |
216 |
< |
/* print comment */ |
217 |
< |
printf("{ Color correction file computed by %s }\n", progname); |
218 |
< |
printf("{ from scanned MacBetch color chart %s }\n", argv[1]); |
219 |
< |
putmapping(); /* put out color mapping */ |
220 |
< |
putdebug(); /* put out debug picture */ |
216 |
> |
if (rawmap) { /* print out raw correspondence */ |
217 |
> |
register int j; |
218 |
> |
|
219 |
> |
printf("# Color correspondence produced by:\n#\t\t"); |
220 |
> |
printargs(argc, argv, stdout); |
221 |
> |
printf("#\tUsage: pcwarp %s uncorrected.pic > corrected.pic\n", |
222 |
> |
i+1 < argc ? argv[i+1] : "{this_file}"); |
223 |
> |
printf("#\t Or: pcond [options] -m %s orig.pic > output.pic\n", |
224 |
> |
i+1 < argc ? argv[i+1] : "{this_file}"); |
225 |
> |
for (j = 0; j < 24; j++) |
226 |
> |
printf("%f %f %f %f %f %f\n", |
227 |
> |
colval(inpRGB[j],RED), colval(inpRGB[j],GRN), |
228 |
> |
colval(inpRGB[j],BLU), colval(mbRGB[j],RED), |
229 |
> |
colval(mbRGB[j],GRN), colval(mbRGB[j],BLU)); |
230 |
> |
if (scanning && debugfp != NULL) |
231 |
> |
cwarp(); /* color warp for debugging */ |
232 |
> |
} else { /* print color mapping */ |
233 |
> |
/* print header */ |
234 |
> |
printf("{\n\tColor correction file computed by:\n\t\t"); |
235 |
> |
printargs(argc, argv, stdout); |
236 |
> |
printf("\n\tUsage: pcomb -f %s uncorrected.pic > corrected.pic\n", |
237 |
> |
i+1 < argc ? argv[i+1] : "{this_file}"); |
238 |
> |
if (!scanning) |
239 |
> |
printf("\t Or: pcond [options] -f %s orig.pic > output.pic\n", |
240 |
> |
i+1 < argc ? argv[i+1] : "{this_file}"); |
241 |
> |
printf("}\n"); |
242 |
> |
putmapping(); /* put out color mapping */ |
243 |
> |
} |
244 |
> |
if (debugfp != NULL) { /* put out debug picture */ |
245 |
> |
if (scanning) |
246 |
> |
picdebug(); |
247 |
> |
else |
248 |
> |
clrdebug(); |
249 |
> |
} |
250 |
|
exit(0); |
251 |
|
userr: |
252 |
< |
fprintf(stderr, "Usage: %s [-d dbg.pic] input.pic output.cal [xul yul xur yur xll yll xlr ylr]\n", |
252 |
> |
fprintf(stderr, |
253 |
> |
"Usage: %s [-d dbg.pic][-P | -p xul yul xur yur xll yll xlr ylr][-i irrad][-m] input.pic [output.{cal|cwp}]\n", |
254 |
|
progname); |
255 |
+ |
fprintf(stderr, " or: %s [-d dbg.pic][-i irrad][-m] -c [xyY.dat [output.{cal|cwp}]]\n", |
256 |
+ |
progname); |
257 |
|
exit(1); |
258 |
|
} |
259 |
|
|
261 |
|
init() /* initialize */ |
262 |
|
{ |
263 |
|
double quad[4][2]; |
264 |
+ |
register int i; |
265 |
|
/* make coordinate transformation */ |
266 |
|
quad[0][0] = bounds[0][0]; |
267 |
|
quad[0][1] = bounds[0][1]; |
276 |
|
fprintf(stderr, "%s: bad chart boundaries\n", progname); |
277 |
|
exit(1); |
278 |
|
} |
279 |
+ |
/* map MacBeth colors to RGB space */ |
280 |
+ |
for (i = 0; i < 24; i++) { |
281 |
+ |
xyY2RGB(mbRGB[i], mbxyY[i]); |
282 |
+ |
scalecolor(mbRGB[i], irrad); |
283 |
+ |
} |
284 |
|
} |
285 |
|
|
286 |
|
|
287 |
|
int |
288 |
< |
chartndx(x, y) /* find color number for position */ |
288 |
> |
chartndx(x, y, np) /* find color number for position */ |
289 |
|
int x, y; |
290 |
+ |
int *np; |
291 |
|
{ |
292 |
|
double ipos[3], cpos[3]; |
293 |
|
int ix, iy; |
300 |
|
cpos[0] /= cpos[2]; |
301 |
|
cpos[1] /= cpos[2]; |
302 |
|
if (cpos[0] < 0. || cpos[0] >= 6. || cpos[1] < 0. || cpos[1] >= 4.) |
303 |
< |
return(-1); |
303 |
> |
return(RG_BORD); |
304 |
|
ix = cpos[0]; |
305 |
|
iy = cpos[1]; |
306 |
|
fx = cpos[0] - ix; |
307 |
|
fy = cpos[1] - iy; |
308 |
< |
if (fx < .35 || fx >= .65 || fy < .35 || fy >= .65) |
309 |
< |
return(-1); |
310 |
< |
return(iy*6 + ix); |
308 |
> |
*np = iy*6 + ix; |
309 |
> |
if (fx >= 0.35 && fx < 0.65 && fy >= 0.35 && fy < 0.65) |
310 |
> |
return(RG_CENT); |
311 |
> |
if (fx < 0.05 || fx >= 0.95 || fy < 0.05 || fy >= 0.95) |
312 |
> |
return(RG_BORD); |
313 |
> |
if (fx >= 0.5) /* right side is corrected */ |
314 |
> |
return(RG_CORR); |
315 |
> |
return(RG_ORIG); /* left side is original */ |
316 |
|
} |
317 |
|
|
318 |
|
|
319 |
< |
getcolors() /* load in picture colors */ |
319 |
> |
getpicture() /* load in picture colors */ |
320 |
|
{ |
321 |
|
COLR *scanln; |
322 |
|
COLOR pval; |
323 |
|
int ccount[24]; |
324 |
|
double d; |
325 |
< |
int y; |
326 |
< |
register int x, i; |
325 |
> |
int y, i; |
326 |
> |
register int x; |
327 |
|
|
328 |
|
scanln = (COLR *)malloc(xmax*sizeof(COLR)); |
329 |
|
if (scanln == NULL) { |
331 |
|
exit(1); |
332 |
|
} |
333 |
|
for (i = 0; i < 24; i++) { |
334 |
< |
setcolor(picRGB[i], 0., 0., 0.); |
334 |
> |
setcolor(inpRGB[i], 0., 0., 0.); |
335 |
|
ccount[i] = 0; |
336 |
|
} |
337 |
|
for (y = ymax-1; y >= 0; y--) { |
340 |
|
progname); |
341 |
|
exit(1); |
342 |
|
} |
343 |
< |
for (x = 0; x < xmax; x++) { |
344 |
< |
i = chartndx(x, y); |
248 |
< |
if (i >= 0) { |
343 |
> |
for (x = 0; x < xmax; x++) |
344 |
> |
if (chartndx(x, y, &i) == RG_CENT) { |
345 |
|
colr_color(pval, scanln[x]); |
346 |
< |
addcolor(picRGB[i], pval); |
346 |
> |
addcolor(inpRGB[i], pval); |
347 |
|
ccount[i]++; |
348 |
|
} |
349 |
+ |
} |
350 |
+ |
for (i = 0; i < 24; i++) { /* compute averages */ |
351 |
+ |
if (ccount[i] == 0) |
352 |
+ |
continue; |
353 |
+ |
d = 1./ccount[i]; |
354 |
+ |
scalecolor(inpRGB[i], d); |
355 |
+ |
inpflags |= 1L<<i; |
356 |
+ |
} |
357 |
+ |
free((void *)scanln); |
358 |
+ |
} |
359 |
+ |
|
360 |
+ |
|
361 |
+ |
getcolors() /* get xyY colors from standard input */ |
362 |
+ |
{ |
363 |
+ |
int gotwhite = 0; |
364 |
+ |
COLOR whiteclr; |
365 |
+ |
int n; |
366 |
+ |
float xyYin[3]; |
367 |
+ |
|
368 |
+ |
while (fgetval(stdin, 'i', &n) == 1) { /* read colors */ |
369 |
+ |
if ((n < 0) | (n > 24) || |
370 |
+ |
fgetval(stdin, 'f', &xyYin[0]) != 1 || |
371 |
+ |
fgetval(stdin, 'f', &xyYin[1]) != 1 || |
372 |
+ |
fgetval(stdin, 'f', &xyYin[2]) != 1 || |
373 |
+ |
(xyYin[0] < 0.) | (xyYin[1] < 0.) || |
374 |
+ |
xyYin[0] + xyYin[1] > 1.) { |
375 |
+ |
fprintf(stderr, "%s: bad color input data\n", |
376 |
+ |
progname); |
377 |
+ |
exit(1); |
378 |
|
} |
379 |
+ |
if (n == 0) { /* calibration white */ |
380 |
+ |
xyY2RGB(whiteclr, xyYin); |
381 |
+ |
gotwhite++; |
382 |
+ |
} else { /* standard color */ |
383 |
+ |
n--; |
384 |
+ |
xyY2RGB(inpRGB[n], xyYin); |
385 |
+ |
inpflags |= 1L<<n; |
386 |
+ |
} |
387 |
|
} |
388 |
< |
for (i = 0; i < 24; i++) { |
389 |
< |
if (ccount[i] == 0) { |
390 |
< |
fprintf(stderr, "%s: bad chart boundaries\n", |
388 |
> |
/* normalize colors */ |
389 |
> |
if (!gotwhite) { |
390 |
> |
if (!(inpflags & 1L<<White)) { |
391 |
> |
fprintf(stderr, "%s: missing input for White\n", |
392 |
|
progname); |
393 |
|
exit(1); |
394 |
|
} |
395 |
< |
d = 1.0/ccount[i]; |
396 |
< |
scalecolor(picRGB[i], d); |
395 |
> |
setcolor(whiteclr, |
396 |
> |
colval(inpRGB[White],RED)/colval(mbRGB[White],RED), |
397 |
> |
colval(inpRGB[White],GRN)/colval(mbRGB[White],GRN), |
398 |
> |
colval(inpRGB[White],BLU)/colval(mbRGB[White],BLU)); |
399 |
|
} |
400 |
< |
free((char *)scanln); |
400 |
> |
for (n = 0; n < 24; n++) |
401 |
> |
if (inpflags & 1L<<n) |
402 |
> |
setcolor(inpRGB[n], |
403 |
> |
colval(inpRGB[n],RED)/colval(whiteclr,RED), |
404 |
> |
colval(inpRGB[n],GRN)/colval(whiteclr,GRN), |
405 |
> |
colval(inpRGB[n],BLU)/colval(whiteclr,BLU)); |
406 |
|
} |
407 |
|
|
408 |
|
|
409 |
|
bresp(y, x) /* piecewise linear interpolation of primaries */ |
410 |
|
COLOR y, x; |
411 |
|
{ |
271 |
– |
double cv[3]; |
412 |
|
register int i, n; |
413 |
|
|
414 |
|
for (i = 0; i < 3; i++) { |
415 |
|
for (n = 0; n < NMBNEU-2; n++) |
416 |
|
if (colval(x,i) < colval(bramp[n+1][0],i)) |
417 |
|
break; |
418 |
< |
cv[i] = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
418 |
> |
colval(y,i) = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
419 |
|
colval(bramp[n][1],i) + |
420 |
|
(colval(x,i) - colval(bramp[n][0],i)) * |
421 |
|
colval(bramp[n+1][1],i)) / |
422 |
|
(colval(bramp[n+1][0],i) - colval(bramp[n][0],i)); |
283 |
– |
if (cv[i] < 0.) cv[i] = 0.; |
423 |
|
} |
285 |
– |
setcolor(y, cv[0], cv[1], cv[2]); |
424 |
|
} |
425 |
|
|
426 |
|
|
427 |
|
compute() /* compute color mapping */ |
428 |
|
{ |
429 |
< |
COLOR clrin[NMBMOD], clrout[NMBMOD]; |
429 |
> |
COLOR clrin[24], clrout[24]; |
430 |
> |
long cflags; |
431 |
|
COLOR ctmp; |
432 |
< |
double d; |
433 |
< |
register int i; |
434 |
< |
/* map MacBeth colors to RGB space */ |
435 |
< |
for (i = 0; i < 24; i++) { |
436 |
< |
d = mbxyY[i][2] / mbxyY[i][1]; |
437 |
< |
ctmp[0] = mbxyY[i][0] * d; |
299 |
< |
ctmp[1] = mbxyY[i][2]; |
300 |
< |
ctmp[2] = (1. - mbxyY[i][0] - mbxyY[i][1]) * d; |
301 |
< |
cie_rgb(mbRGB[i], ctmp); |
432 |
> |
register int i, n; |
433 |
> |
/* did we get what we need? */ |
434 |
> |
if ((inpflags & REQFLGS) != REQFLGS) { |
435 |
> |
fprintf(stderr, "%s: missing required input colors\n", |
436 |
> |
progname); |
437 |
> |
exit(1); |
438 |
|
} |
439 |
|
/* compute piecewise luminance curve */ |
440 |
|
for (i = 0; i < NMBNEU; i++) { |
441 |
< |
copycolor(bramp[i][0], picRGB[mbneu[i]]); |
441 |
> |
copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
442 |
|
copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
443 |
|
} |
444 |
< |
/* compute color matrix */ |
445 |
< |
for (i = 0; i < NMBMOD; i++) { |
446 |
< |
bresp(clrin[i], picRGB[mbmod[i]]); |
447 |
< |
copycolor(clrout[i], mbRGB[mbmod[i]]); |
448 |
< |
} |
449 |
< |
compsoln(clrin, clrout, NMBMOD); |
444 |
> |
/* compute color space gamut */ |
445 |
> |
if (scanning) { |
446 |
> |
copycolor(colmin, cblack); |
447 |
> |
copycolor(colmax, cwhite); |
448 |
> |
scalecolor(colmax, irrad); |
449 |
> |
} else |
450 |
> |
for (i = 0; i < 3; i++) { |
451 |
> |
colval(colmin,i) = colval(bramp[0][0],i) - |
452 |
> |
colval(bramp[0][1],i) * |
453 |
> |
(colval(bramp[1][0],i)-colval(bramp[0][0],i)) / |
454 |
> |
(colval(bramp[1][1],i)-colval(bramp[1][0],i)); |
455 |
> |
colval(colmax,i) = colval(bramp[NMBNEU-2][0],i) + |
456 |
> |
(1.-colval(bramp[NMBNEU-2][1],i)) * |
457 |
> |
(colval(bramp[NMBNEU-1][0],i) - |
458 |
> |
colval(bramp[NMBNEU-2][0],i)) / |
459 |
> |
(colval(bramp[NMBNEU-1][1],i) - |
460 |
> |
colval(bramp[NMBNEU-2][1],i)); |
461 |
> |
} |
462 |
> |
/* compute color mapping */ |
463 |
> |
do { |
464 |
> |
cflags = inpflags & ~gmtflags; |
465 |
> |
n = 0; /* compute transform matrix */ |
466 |
> |
for (i = 0; i < 24; i++) |
467 |
> |
if (cflags & 1L<<i) { |
468 |
> |
bresp(clrin[n], inpRGB[i]); |
469 |
> |
copycolor(clrout[n], mbRGB[i]); |
470 |
> |
n++; |
471 |
> |
} |
472 |
> |
compsoln(clrin, clrout, n); |
473 |
> |
if (irrad > 0.99 && irrad < 1.01) /* check gamut */ |
474 |
> |
for (i = 0; i < 24; i++) |
475 |
> |
if (cflags & 1L<<i && cvtcolor(ctmp, mbRGB[i])) |
476 |
> |
gmtflags |= 1L<<i; |
477 |
> |
} while (cflags & gmtflags); |
478 |
> |
if (gmtflags & MODFLGS) |
479 |
> |
fprintf(stderr, |
480 |
> |
"%s: warning - some moderate colors are out of gamut\n", |
481 |
> |
progname); |
482 |
|
} |
483 |
|
|
484 |
|
|
485 |
< |
putmapping() /* put out color mapping for pcomb -f */ |
485 |
> |
putmapping() /* put out color mapping */ |
486 |
|
{ |
487 |
|
static char cchar[3] = {'r', 'g', 'b'}; |
488 |
|
register int i, j; |
496 |
|
for (i = 0; i < NMBNEU; i++) |
497 |
|
printf(",%g", colval(bramp[i][1],j)); |
498 |
|
printf(");\n"); |
331 |
– |
printf("%c = %ci(1);\n", cchar[j], cchar[j]); |
499 |
|
printf("%cfi(n) = if(n-%g, %d, if(%cxa(n+1)-%c, n, %cfi(n+1)));\n", |
500 |
|
cchar[j], NMBNEU-1.5, NMBNEU-1, cchar[j], |
501 |
|
cchar[j], cchar[j]); |
502 |
|
printf("%cndx = %cfi(1);\n", cchar[j], cchar[j]); |
503 |
< |
printf("%cn = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
504 |
< |
cchar[j], cchar[j], cchar[j], |
505 |
< |
cchar[j], cchar[j], cchar[j]); |
503 |
> |
printf("%c%c = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
504 |
> |
cchar[j], scanning?'n':'o', cchar[j], |
505 |
> |
cchar[j], cchar[j], cchar[j], cchar[j]); |
506 |
|
printf("(%c-%cxa(%cndx))*%cya(%cndx+1)) /\n", |
507 |
|
cchar[j], cchar[j], cchar[j], |
508 |
|
cchar[j], cchar[j]); |
510 |
|
cchar[j], cchar[j], cchar[j], cchar[j]); |
511 |
|
} |
512 |
|
/* print color mapping */ |
513 |
< |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
514 |
< |
solmat[0][0], solmat[0][1], solmat[0][2]); |
515 |
< |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
516 |
< |
solmat[1][0], solmat[1][1], solmat[1][2]); |
517 |
< |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
518 |
< |
solmat[2][0], solmat[2][1], solmat[2][2]); |
513 |
> |
if (scanning) { |
514 |
> |
printf("r = ri(1); g = gi(1); b = bi(1);\n"); |
515 |
> |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
516 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
517 |
> |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
518 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
519 |
> |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
520 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
521 |
> |
} else { |
522 |
> |
printf("r1 = ri(1); g1 = gi(1); b1 = bi(1);\n"); |
523 |
> |
printf("r = %g*r1 + %g*g1 + %g*b1 ;\n", |
524 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
525 |
> |
printf("g = %g*r1 + %g*g1 + %g*b1 ;\n", |
526 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
527 |
> |
printf("b = %g*r1 + %g*g1 + %g*b1 ;\n", |
528 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
529 |
> |
} |
530 |
|
} |
531 |
|
|
532 |
|
|
540 |
|
double colv[3], rowv[3]; |
541 |
|
register int i, j, k; |
542 |
|
|
543 |
< |
if (n < 3 | n > NMBMOD) { |
544 |
< |
fprintf(stderr, "%s: inconsistent code!\n", progname); |
543 |
> |
if (n < 3) { |
544 |
> |
fprintf(stderr, "%s: too few colors to match!\n", progname); |
545 |
|
exit(1); |
546 |
|
} |
547 |
|
if (n == 3) |
590 |
|
} |
591 |
|
|
592 |
|
|
593 |
+ |
cwarp() /* compute color warp map */ |
594 |
+ |
{ |
595 |
+ |
register int i; |
596 |
+ |
|
597 |
+ |
if ((wcor = new3dw(W3EXACT)) == NULL) |
598 |
+ |
goto memerr; |
599 |
+ |
for (i = 0; i < 24; i++) |
600 |
+ |
if (!add3dpt(wcor, inpRGB[i], mbRGB[i])) |
601 |
+ |
goto memerr; |
602 |
+ |
return; |
603 |
+ |
memerr: |
604 |
+ |
perror(progname); |
605 |
+ |
exit(1); |
606 |
+ |
} |
607 |
+ |
|
608 |
+ |
|
609 |
+ |
int |
610 |
|
cvtcolor(cout, cin) /* convert color according to our mapping */ |
611 |
|
COLOR cout, cin; |
612 |
|
{ |
613 |
< |
double r, g, b; |
613 |
> |
COLOR ctmp; |
614 |
> |
int clipped; |
615 |
|
|
616 |
< |
bresp(cout, cin); |
617 |
< |
r = colval(cout,0)*solmat[0][0] + colval(cout,1)*solmat[0][1] |
618 |
< |
+ colval(cout,2)*solmat[0][2]; |
619 |
< |
if (r < 0) r = 0; |
620 |
< |
g = colval(cout,0)*solmat[1][0] + colval(cout,1)*solmat[1][1] |
621 |
< |
+ colval(cout,2)*solmat[1][2]; |
622 |
< |
if (g < 0) g = 0; |
623 |
< |
b = colval(cout,0)*solmat[2][0] + colval(cout,1)*solmat[2][1] |
624 |
< |
+ colval(cout,2)*solmat[2][2]; |
625 |
< |
if (b < 0) b = 0; |
626 |
< |
setcolor(cout, r, g, b); |
616 |
> |
if (wcor != NULL) { |
617 |
> |
clipped = warp3d(cout, cin, wcor); |
618 |
> |
clipped |= clipgamut(cout,bright(cout),CGAMUT,colmin,colmax); |
619 |
> |
} else if (scanning) { |
620 |
> |
bresp(ctmp, cin); |
621 |
> |
clipped = cresp(cout, ctmp); |
622 |
> |
} else { |
623 |
> |
clipped = cresp(ctmp, cin); |
624 |
> |
bresp(cout, ctmp); |
625 |
> |
} |
626 |
> |
return(clipped); |
627 |
|
} |
628 |
|
|
629 |
|
|
630 |
< |
putdebug() /* put out debugging picture */ |
630 |
> |
int |
631 |
> |
cresp(cout, cin) /* transform color according to matrix */ |
632 |
> |
COLOR cout, cin; |
633 |
|
{ |
634 |
+ |
colortrans(cout, solmat, cin); |
635 |
+ |
return(clipgamut(cout, bright(cout), CGAMUT, colmin, colmax)); |
636 |
+ |
} |
637 |
+ |
|
638 |
+ |
|
639 |
+ |
xyY2RGB(rgbout, xyYin) /* convert xyY to RGB */ |
640 |
+ |
COLOR rgbout; |
641 |
+ |
register float xyYin[3]; |
642 |
+ |
{ |
643 |
+ |
COLOR ctmp; |
644 |
+ |
double d; |
645 |
+ |
|
646 |
+ |
d = xyYin[2] / xyYin[1]; |
647 |
+ |
ctmp[0] = xyYin[0] * d; |
648 |
+ |
ctmp[1] = xyYin[2]; |
649 |
+ |
ctmp[2] = (1. - xyYin[0] - xyYin[1]) * d; |
650 |
+ |
/* allow negative values */ |
651 |
+ |
colortrans(rgbout, xyz2rgbmat, ctmp); |
652 |
+ |
} |
653 |
+ |
|
654 |
+ |
|
655 |
+ |
picdebug() /* put out debugging picture */ |
656 |
+ |
{ |
657 |
+ |
static COLOR blkcol = BLKCOLOR; |
658 |
|
COLOR *scan; |
659 |
< |
int y; |
660 |
< |
register int x, i; |
659 |
> |
int y, i; |
660 |
> |
register int x, rg; |
661 |
|
|
440 |
– |
if (debugfp == NULL) |
441 |
– |
return; |
662 |
|
if (fseek(stdin, 0L, 0) == EOF) { |
663 |
|
fprintf(stderr, "%s: cannot seek on input picture\n", progname); |
664 |
|
exit(1); |
675 |
|
fputformat(COLRFMT, debugfp); |
676 |
|
putc('\n', debugfp); |
677 |
|
fprtresolu(xmax, ymax, debugfp); |
678 |
+ |
/* write debug picture */ |
679 |
|
for (y = ymax-1; y >= 0; y--) { |
680 |
|
if (freadscan(scan, xmax, stdin) < 0) { |
681 |
|
fprintf(stderr, "%s: error rereading input picture\n", |
683 |
|
exit(1); |
684 |
|
} |
685 |
|
for (x = 0; x < xmax; x++) { |
686 |
< |
i = chartndx(x, y); |
687 |
< |
if (i < 0) |
686 |
> |
rg = chartndx(x, y, &i); |
687 |
> |
if (rg == RG_CENT) { |
688 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) { |
689 |
> |
copycolor(scan[x], mbRGB[i]); |
690 |
> |
clipgamut(scan[x], bright(scan[x]), |
691 |
> |
CGAMUT, colmin, colmax); |
692 |
> |
} else |
693 |
> |
copycolor(scan[x], blkcol); |
694 |
> |
} else if (rg == RG_CORR) |
695 |
|
cvtcolor(scan[x], scan[x]); |
696 |
< |
else |
697 |
< |
copycolor(scan[x], mbRGB[i]); |
696 |
> |
else if (rg != RG_ORIG) |
697 |
> |
copycolor(scan[x], blkcol); |
698 |
|
} |
699 |
|
if (fwritescan(scan, xmax, debugfp) < 0) { |
700 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
702 |
|
exit(1); |
703 |
|
} |
704 |
|
} |
705 |
< |
free((char *)scan); |
705 |
> |
/* clean up */ |
706 |
> |
fclose(debugfp); |
707 |
> |
free((void *)scan); |
708 |
> |
} |
709 |
> |
|
710 |
> |
|
711 |
> |
clrdebug() /* put out debug picture from color input */ |
712 |
> |
{ |
713 |
> |
static COLR blkclr = BLKCOLR; |
714 |
> |
COLR mbclr[24], cvclr[24], orclr[24]; |
715 |
> |
COLR *scan; |
716 |
> |
COLOR ctmp, ct2; |
717 |
> |
int y, i; |
718 |
> |
register int x, rg; |
719 |
> |
/* convert colors */ |
720 |
> |
for (i = 0; i < 24; i++) { |
721 |
> |
copycolor(ctmp, mbRGB[i]); |
722 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
723 |
> |
setcolr(mbclr[i], colval(ctmp,RED), |
724 |
> |
colval(ctmp,GRN), colval(ctmp,BLU)); |
725 |
> |
if (inpflags & 1L<<i) { |
726 |
> |
copycolor(ctmp, inpRGB[i]); |
727 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
728 |
> |
setcolr(orclr[i], colval(ctmp,RED), |
729 |
> |
colval(ctmp,GRN), colval(ctmp,BLU)); |
730 |
> |
if (rawmap) |
731 |
> |
copycolr(cvclr[i], mbclr[i]); |
732 |
> |
else { |
733 |
> |
bresp(ctmp, inpRGB[i]); |
734 |
> |
colortrans(ct2, solmat, ctmp); |
735 |
> |
clipgamut(ct2, bright(ct2), CGAMUT, |
736 |
> |
cblack, cwhite); |
737 |
> |
setcolr(cvclr[i], colval(ct2,RED), |
738 |
> |
colval(ct2,GRN), |
739 |
> |
colval(ct2,BLU)); |
740 |
> |
} |
741 |
> |
} |
742 |
> |
} |
743 |
> |
/* allocate scanline */ |
744 |
> |
scan = (COLR *)malloc(xmax*sizeof(COLR)); |
745 |
> |
if (scan == NULL) { |
746 |
> |
perror(progname); |
747 |
> |
exit(1); |
748 |
> |
} |
749 |
> |
/* finish debug header */ |
750 |
> |
fputformat(COLRFMT, debugfp); |
751 |
> |
putc('\n', debugfp); |
752 |
> |
fprtresolu(xmax, ymax, debugfp); |
753 |
> |
/* write debug picture */ |
754 |
> |
for (y = ymax-1; y >= 0; y--) { |
755 |
> |
for (x = 0; x < xmax; x++) { |
756 |
> |
rg = chartndx(x, y, &i); |
757 |
> |
if (rg == RG_CENT) { |
758 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) |
759 |
> |
copycolr(scan[x], mbclr[i]); |
760 |
> |
else |
761 |
> |
copycolr(scan[x], blkclr); |
762 |
> |
} else if (rg == RG_BORD || !(1L<<i & inpflags)) |
763 |
> |
copycolr(scan[x], blkclr); |
764 |
> |
else if (rg == RG_ORIG) |
765 |
> |
copycolr(scan[x], orclr[i]); |
766 |
> |
else /* rg == RG_CORR */ |
767 |
> |
copycolr(scan[x], cvclr[i]); |
768 |
> |
} |
769 |
> |
if (fwritecolrs(scan, xmax, debugfp) < 0) { |
770 |
> |
fprintf(stderr, "%s: error writing debugging picture\n", |
771 |
> |
progname); |
772 |
> |
exit(1); |
773 |
> |
} |
774 |
> |
} |
775 |
> |
/* clean up */ |
776 |
> |
fclose(debugfp); |
777 |
> |
free((void *)scan); |
778 |
> |
} |
779 |
> |
|
780 |
> |
|
781 |
> |
getpos(name, bnds, fp) /* get boundary position */ |
782 |
> |
char *name; |
783 |
> |
int bnds[2]; |
784 |
> |
FILE *fp; |
785 |
> |
{ |
786 |
> |
char buf[64]; |
787 |
> |
|
788 |
> |
fprintf(stderr, "\tSelect corner: %s\n", name); |
789 |
> |
if (fgets(buf, sizeof(buf), fp) == NULL || |
790 |
> |
sscanf(buf, "%d %d", &bnds[0], &bnds[1]) != 2) { |
791 |
> |
fprintf(stderr, "%s: read error from display process\n", |
792 |
> |
progname); |
793 |
> |
exit(1); |
794 |
> |
} |
795 |
> |
} |
796 |
> |
|
797 |
> |
|
798 |
> |
pickchartpos(pfn) /* display picture and pick chart location */ |
799 |
> |
char *pfn; |
800 |
> |
{ |
801 |
> |
char combuf[512]; |
802 |
> |
FILE *pfp; |
803 |
> |
|
804 |
> |
sprintf(combuf, DISPCOM, pfn); |
805 |
> |
if ((pfp = popen(combuf, "r")) == NULL) { |
806 |
> |
perror(combuf); |
807 |
> |
exit(1); |
808 |
> |
} |
809 |
> |
fputs("Use middle mouse button to select chart corners:\n", stderr); |
810 |
> |
getpos("upper left (dark skin)", bounds[0], pfp); |
811 |
> |
getpos("upper right (bluish green)", bounds[1], pfp); |
812 |
> |
getpos("lower left (white)", bounds[2], pfp); |
813 |
> |
getpos("lower right (black)", bounds[3], pfp); |
814 |
> |
fputs("Got it -- quit display program.\n", stderr); |
815 |
> |
pclose(pfp); |
816 |
|
} |