18 |
|
#include "resolu.h" |
19 |
|
#include "pmap.h" |
20 |
|
|
21 |
< |
/* MacBeth colors (CIE 1931, absolute white) */ |
22 |
< |
/* computed from spectral measurements */ |
21 |
> |
/* MacBeth colors */ |
22 |
> |
#define DarkSkin 0 |
23 |
> |
#define LightSkin 1 |
24 |
> |
#define BlueSky 2 |
25 |
> |
#define Foliage 3 |
26 |
> |
#define BlueFlower 4 |
27 |
> |
#define BluishGreen 5 |
28 |
> |
#define Orange 6 |
29 |
> |
#define PurplishBlue 7 |
30 |
> |
#define ModerateRed 8 |
31 |
> |
#define Purple 9 |
32 |
> |
#define YellowGreen 10 |
33 |
> |
#define OrangeYellow 11 |
34 |
> |
#define Blue 12 |
35 |
> |
#define Green 13 |
36 |
> |
#define Red 14 |
37 |
> |
#define Yellow 15 |
38 |
> |
#define Magenta 16 |
39 |
> |
#define Cyan 17 |
40 |
> |
#define White 18 |
41 |
> |
#define Neutral8 19 |
42 |
> |
#define Neutral65 20 |
43 |
> |
#define Neutral5 21 |
44 |
> |
#define Neutral35 22 |
45 |
> |
#define Black 23 |
46 |
> |
/* computed from 5nm spectral measurements */ |
47 |
> |
/* CIE 1931 2 degree obs, equal-energy white */ |
48 |
|
float mbxyY[24][3] = { |
49 |
|
{0.462, 0.3769, 0.0932961}, /* DarkSkin */ |
50 |
|
{0.4108, 0.3542, 0.410348}, /* LightSkin */ |
75 |
|
COLOR mbRGB[24]; /* MacBeth RGB values */ |
76 |
|
|
77 |
|
#define NMBNEU 6 /* Number of MacBeth neutral colors */ |
78 |
< |
short mbneu[NMBNEU] = {23,22,21,20,19,18}; |
54 |
< |
#define NMBMOD 3 /* Number of MacBeth moderate colors */ |
55 |
< |
short mbmod[NMBMOD] = {1,3,2}; |
56 |
< |
#define NMBSAT 6 /* Number of MacBeth saturated colors */ |
57 |
< |
short mbsat[NMBSAT] = {14,12,13,15,16,17}; |
78 |
> |
short mbneu[NMBNEU] = {Black,Neutral35,Neutral5,Neutral65,Neutral8,White}; |
79 |
|
|
80 |
+ |
#define NMBMOD 16 /* Number of MacBeth unsaturated colors */ |
81 |
+ |
short mbmod[NMBMOD] = { |
82 |
+ |
DarkSkin,LightSkin,BlueSky,Foliage,BlueFlower,BluishGreen, |
83 |
+ |
PurplishBlue,ModerateRed,YellowGreen,OrangeYellow, |
84 |
+ |
Black,Neutral35,Neutral5,Neutral65,Neutral8,White |
85 |
+ |
}; |
86 |
+ |
|
87 |
+ |
#define NMBSAT 8 /* Number of MacBeth saturated colors */ |
88 |
+ |
short mbsat[NMBSAT] = { |
89 |
+ |
Red,Green,Blue,Magenta,Yellow,Cyan, |
90 |
+ |
Orange,Purple |
91 |
+ |
}; |
92 |
+ |
|
93 |
+ |
#define REQFLGS (1L<<White|1L<<Neutral8|1L<<Neutral65| \ |
94 |
+ |
1L<<Neutral5|1L<<Neutral35|1L<<Black) |
95 |
+ |
|
96 |
+ |
#define CENTCVG 0.3 /* measured coverage of square sample */ |
97 |
+ |
#define FULLCVG 0.9 /* coverage of entire square */ |
98 |
+ |
|
99 |
|
int xmax, ymax; /* input image dimensions */ |
100 |
|
int bounds[4][2]; /* image coordinates of chart corners */ |
101 |
|
double imgxfm[3][3]; /* coordinate transformation matrix */ |
102 |
|
|
103 |
< |
COLOR picRGB[24]; /* picture colors */ |
103 |
> |
COLOR inpRGB[24]; /* measured or scanned input colors */ |
104 |
> |
long inpflags = 0; /* flags of which colors were input */ |
105 |
|
|
106 |
< |
double bramp[NMBNEU][2]; /* brightness ramp */ |
106 |
> |
COLOR bramp[NMBNEU][2]; /* brightness ramp (per primary) */ |
107 |
|
double solmat[3][3]; /* color mapping matrix */ |
108 |
|
|
109 |
< |
FILE *debugfp = NULL; |
109 |
> |
FILE *debugfp = NULL; /* debug output picture */ |
110 |
|
char *progname; |
111 |
|
|
112 |
|
extern char *malloc(); |
116 |
|
int argc; |
117 |
|
char **argv; |
118 |
|
{ |
119 |
+ |
int inpispic = 1; |
120 |
|
int i; |
121 |
|
|
122 |
|
progname = argv[0]; |
123 |
< |
if (argc > 2 && !strcmp(argv[1], "-d")) { /* debug output */ |
124 |
< |
if ((debugfp = fopen(argv[2], "w")) == NULL) { |
125 |
< |
perror(argv[2]); |
126 |
< |
exit(1); |
127 |
< |
} |
123 |
> |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
124 |
> |
switch (argv[i][1]) { |
125 |
> |
case 'd': /* debug output */ |
126 |
> |
i++; |
127 |
> |
if (badarg(argc-i, argv+i, "s")) |
128 |
> |
goto userr; |
129 |
> |
if ((debugfp = fopen(argv[i], "w")) == NULL) { |
130 |
> |
perror(argv[i]); |
131 |
> |
exit(1); |
132 |
> |
} |
133 |
|
#ifdef MSDOS |
134 |
< |
setmode(fileno(debugfp), O_BINARY); |
134 |
> |
setmode(fileno(debugfp), O_BINARY); |
135 |
|
#endif |
136 |
< |
newheader("RADIANCE", debugfp); |
137 |
< |
printargs(argc, argv, debugfp); |
138 |
< |
argv += 2; |
139 |
< |
argc -= 2; |
140 |
< |
} |
141 |
< |
if (argc != 3 && argc != 11) |
142 |
< |
goto userr; |
143 |
< |
if (strcmp(argv[1], "-") && freopen(argv[1], "r", stdin) == NULL) { |
136 |
> |
newheader("RADIANCE", debugfp); /* start */ |
137 |
> |
printargs(argc, argv, debugfp); /* header */ |
138 |
> |
break; |
139 |
> |
case 'p': /* picture position */ |
140 |
> |
if (badarg(argc-i-1, argv+i+1, "iiiiiiii")) |
141 |
> |
goto userr; |
142 |
> |
bounds[0][0] = atoi(argv[++i]); |
143 |
> |
bounds[0][1] = atoi(argv[++i]); |
144 |
> |
bounds[1][0] = atoi(argv[++i]); |
145 |
> |
bounds[1][1] = atoi(argv[++i]); |
146 |
> |
bounds[2][0] = atoi(argv[++i]); |
147 |
> |
bounds[2][1] = atoi(argv[++i]); |
148 |
> |
bounds[3][0] = atoi(argv[++i]); |
149 |
> |
bounds[3][1] = atoi(argv[++i]); |
150 |
> |
inpispic = 2; |
151 |
> |
break; |
152 |
> |
case 'c': /* color input */ |
153 |
> |
inpispic = 0; |
154 |
> |
break; |
155 |
> |
default: |
156 |
> |
goto userr; |
157 |
> |
} |
158 |
> |
/* open files */ |
159 |
> |
if (i < argc && freopen(argv[i], "r", stdin) == NULL) { |
160 |
|
perror(argv[1]); |
161 |
|
exit(1); |
162 |
|
} |
163 |
< |
if (strcmp(argv[2], "-") && freopen(argv[2], "w", stdout) == NULL) { |
163 |
> |
if (i+1 < argc && freopen(argv[i+1], "w", stdout) == NULL) { |
164 |
|
perror(argv[2]); |
165 |
|
exit(1); |
166 |
|
} |
167 |
+ |
if (inpispic) { /* load input picture header */ |
168 |
|
#ifdef MSDOS |
169 |
< |
setmode(fileno(stdin), O_BINARY); |
169 |
> |
setmode(fileno(stdin), O_BINARY); |
170 |
|
#endif |
171 |
< |
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
172 |
< |
fgetresolu(&xmax, &ymax, stdin) < 0) { |
173 |
< |
fprintf(stderr, "%s: bad input picture\n", progname); |
174 |
< |
exit(1); |
111 |
< |
} |
112 |
< |
/* get chart boundaries */ |
113 |
< |
if (argc == 11) { |
114 |
< |
for (i = 0; i < 4; i++) { |
115 |
< |
if (!isint(argv[2*i+3]) | !isint(argv[2*i+4])) |
116 |
< |
goto userr; |
117 |
< |
bounds[i][0] = atoi(argv[2*i+3]); |
118 |
< |
bounds[i][1] = atoi(argv[2*i+4]); |
171 |
> |
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
172 |
> |
fgetresolu(&xmax, &ymax, stdin) < 0) { |
173 |
> |
fprintf(stderr, "%s: bad input picture\n", progname); |
174 |
> |
exit(1); |
175 |
|
} |
176 |
< |
} else { |
176 |
> |
} else { /* else set default xmax and ymax */ |
177 |
> |
xmax = 512; |
178 |
> |
ymax = 2*512/3; |
179 |
> |
} |
180 |
> |
if (inpispic != 2) { /* use default boundaries */ |
181 |
|
bounds[0][0] = bounds[2][0] = .029*xmax + .5; |
182 |
|
bounds[0][1] = bounds[1][1] = .956*ymax + .5; |
183 |
|
bounds[1][0] = bounds[3][0] = .971*xmax + .5; |
184 |
|
bounds[2][1] = bounds[3][1] = .056*ymax + .5; |
185 |
|
} |
186 |
|
init(); /* initialize */ |
187 |
< |
getcolors(); /* get picture colors */ |
187 |
> |
if (inpispic) /* get picture colors */ |
188 |
> |
getpicture(); |
189 |
> |
else |
190 |
> |
getcolors(); |
191 |
> |
compute(); /* compute color mapping */ |
192 |
> |
/* print comment */ |
193 |
> |
printf("{ Color correction file computed by:\n\t"); |
194 |
> |
printargs(argc, argv, stdout); |
195 |
> |
printf("}\n"); |
196 |
|
putmapping(); /* put out color mapping */ |
197 |
< |
putdebug(); /* put out debug picture */ |
197 |
> |
if (debugfp != NULL) /* put out debug picture */ |
198 |
> |
if (inpispic) |
199 |
> |
picdebug(); |
200 |
> |
else |
201 |
> |
clrdebug(); |
202 |
|
exit(0); |
203 |
|
userr: |
204 |
< |
fprintf(stderr, "Usage: %s [-d dbg.pic] input.pic output.cal [xul yul xur yur xll yll xlr ylr]\n", |
204 |
> |
fprintf(stderr, |
205 |
> |
"Usage: %s [-d dbg.pic][-p xul yul xur yur xll yll xlr ylr] input.pic [output.cal]\n", |
206 |
|
progname); |
207 |
+ |
fprintf(stderr, " or: %s [-d dbg.pic] -c [xyY.dat [output.cal]]\n", |
208 |
+ |
progname); |
209 |
|
exit(1); |
210 |
|
} |
211 |
|
|
213 |
|
init() /* initialize */ |
214 |
|
{ |
215 |
|
double quad[4][2]; |
216 |
< |
COLOR ctmp; |
142 |
< |
double d; |
143 |
< |
int i; |
216 |
> |
register int i; |
217 |
|
/* make coordinate transformation */ |
218 |
|
quad[0][0] = bounds[0][0]; |
219 |
|
quad[0][1] = bounds[0][1]; |
229 |
|
exit(1); |
230 |
|
} |
231 |
|
/* map MacBeth colors to RGB space */ |
232 |
< |
for (i = 0; i < 24; i++) { |
233 |
< |
d = mbxyY[i][2] / mbxyY[i][1]; |
161 |
< |
ctmp[0] = mbxyY[i][0] * d; |
162 |
< |
ctmp[1] = mbxyY[i][2]; |
163 |
< |
ctmp[2] = (1. - mbxyY[i][0] - mbxyY[i][1]) * d; |
164 |
< |
cie_rgb(mbRGB[i], ctmp); |
165 |
< |
} |
232 |
> |
for (i = 0; i < 24; i++) |
233 |
> |
xyY2RGB(mbRGB[i], mbxyY[i]); |
234 |
|
} |
235 |
|
|
236 |
|
|
237 |
|
int |
238 |
< |
chartndx(x, y) /* find color number for position */ |
238 |
> |
chartndx(x, y, cvg) /* find color number for position */ |
239 |
|
int x, y; |
240 |
+ |
double cvg; |
241 |
|
{ |
242 |
|
double ipos[3], cpos[3]; |
243 |
|
int ix, iy; |
244 |
|
double fx, fy; |
245 |
+ |
double cmin, cmax; |
246 |
|
|
247 |
|
ipos[0] = x; |
248 |
|
ipos[1] = y; |
256 |
|
iy = cpos[1]; |
257 |
|
fx = cpos[0] - ix; |
258 |
|
fy = cpos[1] - iy; |
259 |
< |
if (fx < .35 || fx >= .65 || fy < .35 || fy >= .65) |
259 |
> |
cmin = .5*(1.-cvg); |
260 |
> |
cmax = 1. - cmin; |
261 |
> |
if (fx < cmin || fx >= cmax || fy < cmin || fy >= cmax) |
262 |
|
return(-1); |
263 |
|
return(iy*6 + ix); |
264 |
|
} |
265 |
|
|
266 |
|
|
267 |
< |
getcolors() /* load in picture colors */ |
267 |
> |
getpicture() /* load in picture colors */ |
268 |
|
{ |
269 |
|
COLR *scanln; |
270 |
|
COLOR pval; |
279 |
|
exit(1); |
280 |
|
} |
281 |
|
for (i = 0; i < 24; i++) { |
282 |
< |
setcolor(picRGB[i], 0., 0., 0.); |
282 |
> |
setcolor(inpRGB[i], 0., 0., 0.); |
283 |
|
ccount[i] = 0; |
284 |
|
} |
285 |
|
for (y = ymax-1; y >= 0; y--) { |
289 |
|
exit(1); |
290 |
|
} |
291 |
|
for (x = 0; x < xmax; x++) { |
292 |
< |
i = chartndx(x, y); |
292 |
> |
i = chartndx(x, y, CENTCVG); |
293 |
|
if (i >= 0) { |
294 |
|
colr_color(pval, scanln[x]); |
295 |
< |
addcolor(picRGB[i], pval); |
295 |
> |
addcolor(inpRGB[i], pval); |
296 |
|
ccount[i]++; |
297 |
|
} |
298 |
|
} |
299 |
|
} |
300 |
< |
for (i = 0; i < 24; i++) { |
301 |
< |
if (ccount[i] == 0) { |
302 |
< |
fprintf(stderr, "%s: bad chart boundaries\n", |
300 |
> |
for (i = 0; i < 24; i++) { /* compute averages */ |
301 |
> |
if (ccount[i] == 0) |
302 |
> |
continue; |
303 |
> |
d = 1./ccount[i]; |
304 |
> |
scalecolor(inpRGB[i], d); |
305 |
> |
inpflags |= 1L<<i; |
306 |
> |
} |
307 |
> |
free((char *)scanln); |
308 |
> |
} |
309 |
> |
|
310 |
> |
|
311 |
> |
getcolors() /* get xyY colors from standard input */ |
312 |
> |
{ |
313 |
> |
int gotwhite = 0; |
314 |
> |
COLOR whiteclr; |
315 |
> |
int n; |
316 |
> |
float xyYin[3]; |
317 |
> |
|
318 |
> |
while (fgetval(stdin, 'i', &n) == 1) { /* read colors */ |
319 |
> |
if (n < 0 | n > 24 || |
320 |
> |
fgetval(stdin, 'f', &xyYin[0]) != 1 || |
321 |
> |
fgetval(stdin, 'f', &xyYin[1]) != 1 || |
322 |
> |
fgetval(stdin, 'f', &xyYin[2]) != 1 || |
323 |
> |
xyYin[0] < 0. | xyYin[0] > 1. | |
324 |
> |
xyYin[1] < 0. | xyYin[1] > 1.) { |
325 |
> |
fprintf(stderr, "%s: bad color input data\n", |
326 |
|
progname); |
327 |
|
exit(1); |
328 |
|
} |
329 |
< |
d = 1.0/ccount[i]; |
330 |
< |
scalecolor(picRGB[i], d); |
329 |
> |
if (n == 0) { /* calibration white */ |
330 |
> |
xyY2RGB(whiteclr, xyYin); |
331 |
> |
gotwhite++; |
332 |
> |
} else { /* standard color */ |
333 |
> |
n--; |
334 |
> |
xyY2RGB(inpRGB[n], xyYin); |
335 |
> |
inpflags |= 1L<<n; |
336 |
> |
} |
337 |
|
} |
338 |
< |
free((char *)scanln); |
338 |
> |
/* normalize colors */ |
339 |
> |
if (!gotwhite) { |
340 |
> |
if (!(inpflags & 1L<<White)) { |
341 |
> |
fprintf(stderr, "%s: missing input for White\n", |
342 |
> |
progname); |
343 |
> |
exit(1); |
344 |
> |
} |
345 |
> |
setcolor(whiteclr, |
346 |
> |
colval(inpRGB[White],RED)/colval(mbRGB[White],RED), |
347 |
> |
colval(inpRGB[White],GRN)/colval(mbRGB[White],GRN), |
348 |
> |
colval(inpRGB[White],BLU)/colval(mbRGB[White],BLU)); |
349 |
> |
} |
350 |
> |
for (n = 0; n < 24; n++) |
351 |
> |
if (inpflags & 1L<<n) |
352 |
> |
setcolor(inpRGB[n], |
353 |
> |
colval(inpRGB[n],RED)/colval(whiteclr,RED), |
354 |
> |
colval(inpRGB[n],GRN)/colval(whiteclr,GRN), |
355 |
> |
colval(inpRGB[n],BLU)/colval(whiteclr,BLU)); |
356 |
|
} |
357 |
|
|
358 |
|
|
359 |
< |
double |
360 |
< |
bresp(x) /* piecewise linear interpolation of brightness */ |
243 |
< |
double x; |
359 |
> |
bresp(y, x) /* piecewise linear interpolation of primaries */ |
360 |
> |
COLOR y, x; |
361 |
|
{ |
362 |
< |
register int n = NMBNEU; |
362 |
> |
double cv[3]; |
363 |
> |
register int i, n; |
364 |
|
|
365 |
< |
while (n > 0 && x < bramp[--n][0]) |
366 |
< |
; |
367 |
< |
return( ((bramp[n+1][0] - x)*bramp[n][1] + |
368 |
< |
(x - bramp[n][0])*bramp[n+1][1]) / |
369 |
< |
(bramp[n+1][0] - bramp[n][0]) ); |
365 |
> |
for (i = 0; i < 3; i++) { |
366 |
> |
for (n = 0; n < NMBNEU-2; n++) |
367 |
> |
if (colval(x,i) < colval(bramp[n+1][0],i)) |
368 |
> |
break; |
369 |
> |
cv[i] = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
370 |
> |
colval(bramp[n][1],i) + |
371 |
> |
(colval(x,i) - colval(bramp[n][0],i)) * |
372 |
> |
colval(bramp[n+1][1],i)) / |
373 |
> |
(colval(bramp[n+1][0],i) - colval(bramp[n][0],i)); |
374 |
> |
if (cv[i] < 0.) cv[i] = 0.; |
375 |
> |
} |
376 |
> |
setcolor(y, cv[0], cv[1], cv[2]); |
377 |
|
} |
378 |
|
|
379 |
|
|
380 |
< |
putmapping() /* compute and print mapping for pcomb -f */ |
380 |
> |
compute() /* compute color mapping */ |
381 |
|
{ |
382 |
< |
float clrin[NMBMOD][3], clrout[NMBMOD][3]; |
383 |
< |
register int i, j; |
382 |
> |
COLOR clrin[NMBMOD], clrout[NMBMOD]; |
383 |
> |
register int i, n; |
384 |
> |
/* did we get what we need? */ |
385 |
> |
if ((inpflags & REQFLGS) != REQFLGS) { |
386 |
> |
fprintf(stderr, "%s: missing required input colors\n", |
387 |
> |
progname); |
388 |
> |
exit(1); |
389 |
> |
} |
390 |
|
/* compute piecewise luminance curve */ |
391 |
|
for (i = 0; i < NMBNEU; i++) { |
392 |
< |
bramp[i][0] = bright(picRGB[mbneu[i]]); |
393 |
< |
bramp[i][1] = bright(mbRGB[mbneu[i]]); |
392 |
> |
copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
393 |
> |
copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
394 |
|
} |
395 |
|
/* compute color matrix */ |
396 |
< |
for (i = 0; i < NMBMOD; i++) |
397 |
< |
for (j = 0; j < 3; j++) { |
398 |
< |
clrin[i][j] = bresp(picRGB[mbmod[i]][j]); |
399 |
< |
clrout[i][j] = mbRGB[mbmod[i]][j]; |
396 |
> |
for (n = 0, i = 0; i < NMBMOD; i++) |
397 |
> |
if (inpflags & 1L<<mbmod[i]) { |
398 |
> |
bresp(clrin[n], inpRGB[mbmod[i]]); |
399 |
> |
copycolor(clrout[n], mbRGB[mbmod[i]]); |
400 |
> |
n++; |
401 |
|
} |
402 |
< |
compsoln(clrin, clrout, NMBMOD); |
402 |
> |
compsoln(clrin, clrout, n); |
403 |
> |
} |
404 |
> |
|
405 |
> |
|
406 |
> |
putmapping() /* put out color mapping for pcomb -f */ |
407 |
> |
{ |
408 |
> |
static char cchar[3] = {'r', 'g', 'b'}; |
409 |
> |
register int i, j; |
410 |
|
/* print brightness mapping */ |
411 |
< |
printf("xval(i) : select(i, 0"); |
412 |
< |
for (i = 0; i < NMBNEU; i++) |
413 |
< |
printf(", %g", bramp[i][0]); |
414 |
< |
printf(");\n"); |
415 |
< |
printf("yval(i) : select(i, 0"); |
416 |
< |
for (i = 0; i < NMBNEU; i++) |
417 |
< |
printf(", %g", bramp[i][1]); |
418 |
< |
printf(");\n"); |
419 |
< |
printf("ifind(x,f,n) : if(1.5-n, 1, if(x-f(n), n, ifind(x,f,n-1)));\n"); |
420 |
< |
printf("binterp(i,x) : ((xval(i+1)-x)*yval(i) + (x-xval(i))*yval(i+1))/\n"); |
421 |
< |
printf("\t\t(xval(i+1) - xval(i));\n"); |
422 |
< |
printf("bresp(x) : binterp(ifind(x,xval,xval(0)-1), x);\n"); |
423 |
< |
printf("nred = bresp(ri(1));\n"); |
424 |
< |
printf("ngrn = bresp(gi(1));\n"); |
425 |
< |
printf("nblu = bresp(bi(1));\n"); |
411 |
> |
for (j = 0; j < 3; j++) { |
412 |
> |
printf("%cxa(i) : select(i", cchar[j]); |
413 |
> |
for (i = 0; i < NMBNEU; i++) |
414 |
> |
printf(",%g", colval(bramp[i][0],j)); |
415 |
> |
printf(");\n"); |
416 |
> |
printf("%cya(i) : select(i", cchar[j]); |
417 |
> |
for (i = 0; i < NMBNEU; i++) |
418 |
> |
printf(",%g", colval(bramp[i][1],j)); |
419 |
> |
printf(");\n"); |
420 |
> |
printf("%c = %ci(1);\n", cchar[j], cchar[j]); |
421 |
> |
printf("%cfi(n) = if(n-%g, %d, if(%cxa(n+1)-%c, n, %cfi(n+1)));\n", |
422 |
> |
cchar[j], NMBNEU-1.5, NMBNEU-1, cchar[j], |
423 |
> |
cchar[j], cchar[j]); |
424 |
> |
printf("%cndx = %cfi(1);\n", cchar[j], cchar[j]); |
425 |
> |
printf("%cn = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
426 |
> |
cchar[j], cchar[j], cchar[j], |
427 |
> |
cchar[j], cchar[j], cchar[j]); |
428 |
> |
printf("(%c-%cxa(%cndx))*%cya(%cndx+1)) /\n", |
429 |
> |
cchar[j], cchar[j], cchar[j], |
430 |
> |
cchar[j], cchar[j]); |
431 |
> |
printf("\t\t(%cxa(%cndx+1) - %cxa(%cndx)) ;\n", |
432 |
> |
cchar[j], cchar[j], cchar[j], cchar[j]); |
433 |
> |
} |
434 |
|
/* print color mapping */ |
435 |
< |
printf("ro = %g*nred + %g*ngrn + %g*nblu\n", |
436 |
< |
solmat[0][0], solmat[1][0], solmat[2][0]); |
437 |
< |
printf("go = %g*nred + %g*ngrn + %g*nblu\n", |
438 |
< |
solmat[0][1], solmat[1][1], solmat[2][1]); |
439 |
< |
printf("bo = %g*nred + %g*ngrn + %g*nblu\n", |
440 |
< |
solmat[0][2], solmat[1][2], solmat[2][2]); |
435 |
> |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
436 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
437 |
> |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
438 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
439 |
> |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
440 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
441 |
|
} |
442 |
|
|
443 |
|
|
444 |
< |
compsoln(cin, cout, n) /* solve 3x3 system */ |
445 |
< |
float cin[][3], cout[][3]; |
444 |
> |
compsoln(cin, cout, n) /* solve 3xN system using least-squares */ |
445 |
> |
COLOR cin[], cout[]; |
446 |
|
int n; |
447 |
|
{ |
448 |
|
extern double mx3d_adjoint(), fabs(); |
449 |
|
double mat[3][3], invmat[3][3]; |
450 |
|
double det; |
451 |
|
double colv[3], rowv[3]; |
452 |
< |
register int i, j; |
452 |
> |
register int i, j, k; |
453 |
|
|
454 |
< |
if (n != 3) { |
455 |
< |
fprintf(stderr, "%s: inconsistent code!\n", progname); |
454 |
> |
if (n < 3 | n > NMBMOD) { |
455 |
> |
fprintf(stderr, "%s: bad number of colors to match\n", progname); |
456 |
|
exit(1); |
457 |
|
} |
458 |
< |
for (i = 0; i < 3; i++) |
459 |
< |
for (j = 0; j < 3; j++) |
460 |
< |
mat[i][j] = cin[j][i]; |
458 |
> |
if (n == 3) |
459 |
> |
for (i = 0; i < 3; i++) |
460 |
> |
for (j = 0; j < 3; j++) |
461 |
> |
mat[i][j] = colval(cin[j],i); |
462 |
> |
else { /* compute A^t A */ |
463 |
> |
for (i = 0; i < 3; i++) |
464 |
> |
for (j = i; j < 3; j++) { |
465 |
> |
mat[i][j] = 0.; |
466 |
> |
for (k = 0; k < n; k++) |
467 |
> |
mat[i][j] += colval(cin[k],i) * |
468 |
> |
colval(cin[k],j); |
469 |
> |
} |
470 |
> |
for (i = 1; i < 3; i++) /* using symmetry */ |
471 |
> |
for (j = 0; j < i; j++) |
472 |
> |
mat[i][j] = mat[j][i]; |
473 |
> |
} |
474 |
|
det = mx3d_adjoint(mat, invmat); |
475 |
|
if (fabs(det) < 1e-4) { |
476 |
|
fprintf(stderr, "%s: cannot compute color mapping\n", |
484 |
|
for (j = 0; j < 3; j++) |
485 |
|
invmat[i][j] /= det; |
486 |
|
for (i = 0; i < 3; i++) { |
487 |
+ |
if (n == 3) |
488 |
+ |
for (j = 0; j < 3; j++) |
489 |
+ |
colv[j] = colval(cout[j],i); |
490 |
+ |
else |
491 |
+ |
for (j = 0; j < 3; j++) { |
492 |
+ |
colv[j] = 0.; |
493 |
+ |
for (k = 0; k < n; k++) |
494 |
+ |
colv[j] += colval(cout[k],i) * |
495 |
+ |
colval(cin[k],j); |
496 |
+ |
} |
497 |
+ |
mx3d_transform(colv, invmat, rowv); |
498 |
|
for (j = 0; j < 3; j++) |
499 |
< |
rowv[j] = cout[j][i]; |
329 |
< |
mx3d_transform(rowv, invmat, colv); |
330 |
< |
for (j = 0; j < 3; j++) |
331 |
< |
solmat[j][i] = colv[j]; |
499 |
> |
solmat[i][j] = rowv[j]; |
500 |
|
} |
501 |
|
} |
502 |
|
|
505 |
|
COLOR cout, cin; |
506 |
|
{ |
507 |
|
double r, g, b; |
340 |
– |
double r1, g1, b1; |
508 |
|
|
509 |
< |
r = bresp(colval(cin,RED)); |
510 |
< |
g = bresp(colval(cin,GRN)); |
511 |
< |
b = bresp(colval(cin,BLU)); |
512 |
< |
r1 = r*solmat[0][0] + g*solmat[1][0] + b*solmat[2][0]; |
513 |
< |
if (r1 < 0) r1 = 0; |
514 |
< |
g1 = r*solmat[0][1] + g*solmat[1][1] + b*solmat[2][1]; |
515 |
< |
if (g1 < 0) g1 = 0; |
516 |
< |
b1 = r*solmat[0][2] + g*solmat[1][2] + b*solmat[2][2]; |
517 |
< |
if (b1 < 0) b1 = 0; |
518 |
< |
setcolor(cout, r1, g1, b1); |
509 |
> |
bresp(cout, cin); |
510 |
> |
r = colval(cout,0)*solmat[0][0] + colval(cout,1)*solmat[0][1] |
511 |
> |
+ colval(cout,2)*solmat[0][2]; |
512 |
> |
if (r < 0) r = 0; |
513 |
> |
g = colval(cout,0)*solmat[1][0] + colval(cout,1)*solmat[1][1] |
514 |
> |
+ colval(cout,2)*solmat[1][2]; |
515 |
> |
if (g < 0) g = 0; |
516 |
> |
b = colval(cout,0)*solmat[2][0] + colval(cout,1)*solmat[2][1] |
517 |
> |
+ colval(cout,2)*solmat[2][2]; |
518 |
> |
if (b < 0) b = 0; |
519 |
> |
setcolor(cout, r, g, b); |
520 |
|
} |
521 |
|
|
522 |
|
|
523 |
< |
putdebug() /* put out debugging picture */ |
523 |
> |
xyY2RGB(rgbout, xyYin) /* convert xyY to RGB */ |
524 |
> |
COLOR rgbout; |
525 |
> |
register float xyYin[3]; |
526 |
|
{ |
527 |
+ |
COLOR ctmp; |
528 |
+ |
double d; |
529 |
+ |
|
530 |
+ |
d = xyYin[2] / xyYin[1]; |
531 |
+ |
ctmp[0] = xyYin[0] * d; |
532 |
+ |
ctmp[1] = xyYin[2]; |
533 |
+ |
ctmp[2] = (1. - xyYin[0] - xyYin[1]) * d; |
534 |
+ |
cie_rgb(rgbout, ctmp); |
535 |
+ |
} |
536 |
+ |
|
537 |
+ |
|
538 |
+ |
picdebug() /* put out debugging picture */ |
539 |
+ |
{ |
540 |
|
COLOR *scan; |
541 |
|
int y; |
542 |
|
register int x, i; |
543 |
|
|
361 |
– |
if (debugfp == NULL) |
362 |
– |
return; |
544 |
|
if (fseek(stdin, 0L, 0) == EOF) { |
545 |
|
fprintf(stderr, "%s: cannot seek on input picture\n", progname); |
546 |
|
exit(1); |
554 |
|
exit(1); |
555 |
|
} |
556 |
|
/* finish debug header */ |
557 |
+ |
fputformat(COLRFMT, debugfp); |
558 |
|
putc('\n', debugfp); |
559 |
|
fprtresolu(xmax, ymax, debugfp); |
560 |
+ |
/* write debug picture */ |
561 |
|
for (y = ymax-1; y >= 0; y--) { |
562 |
|
if (freadscan(scan, xmax, stdin) < 0) { |
563 |
|
fprintf(stderr, "%s: error rereading input picture\n", |
565 |
|
exit(1); |
566 |
|
} |
567 |
|
for (x = 0; x < xmax; x++) { |
568 |
< |
i = chartndx(x, y); |
568 |
> |
i = chartndx(x, y, CENTCVG); |
569 |
|
if (i < 0) |
570 |
|
cvtcolor(scan[x], scan[x]); |
571 |
|
else |
577 |
|
exit(1); |
578 |
|
} |
579 |
|
} |
580 |
+ |
/* clean up */ |
581 |
+ |
fclose(debugfp); |
582 |
+ |
free((char *)scan); |
583 |
+ |
} |
584 |
+ |
|
585 |
+ |
|
586 |
+ |
clrdebug() /* put out debug picture from color input */ |
587 |
+ |
{ |
588 |
+ |
static COLR blkclr = BLKCOLR; |
589 |
+ |
COLR mbclr[24], cvclr[24]; |
590 |
+ |
COLR *scan; |
591 |
+ |
COLOR ctmp; |
592 |
+ |
int y; |
593 |
+ |
register int i, x; |
594 |
+ |
/* convert colors */ |
595 |
+ |
for (i = 0; i < 24; i++) { |
596 |
+ |
setcolr(mbclr[i], colval(mbRGB[i],RED), |
597 |
+ |
colval(mbRGB[i],GRN), colval(mbRGB[i],BLU)); |
598 |
+ |
if (inpflags & 1L<<i) { |
599 |
+ |
cvtcolor(ctmp, inpRGB[i]); |
600 |
+ |
setcolr(cvclr[i], colval(ctmp,RED), |
601 |
+ |
colval(ctmp,GRN), colval(ctmp,BLU)); |
602 |
+ |
} |
603 |
+ |
} |
604 |
+ |
/* allocate scanline */ |
605 |
+ |
scan = (COLR *)malloc(xmax*sizeof(COLR)); |
606 |
+ |
if (scan == NULL) { |
607 |
+ |
perror(progname); |
608 |
+ |
exit(1); |
609 |
+ |
} |
610 |
+ |
/* finish debug header */ |
611 |
+ |
fputformat(COLRFMT, debugfp); |
612 |
+ |
putc('\n', debugfp); |
613 |
+ |
fprtresolu(xmax, ymax, debugfp); |
614 |
+ |
/* write debug picture */ |
615 |
+ |
for (y = ymax-1; y >= 0; y--) { |
616 |
+ |
for (x = 0; x < xmax; x++) |
617 |
+ |
if ((i = chartndx(x, y, CENTCVG)) >= 0) |
618 |
+ |
copycolr(scan[x], mbclr[i]); |
619 |
+ |
else if ((i = chartndx(x, y, FULLCVG)) >= 0 && |
620 |
+ |
inpflags & 1L<<i) |
621 |
+ |
copycolr(scan[x], cvclr[i]); |
622 |
+ |
else |
623 |
+ |
copycolr(scan[x], blkclr); |
624 |
+ |
if (fwritecolrs(scan, xmax, debugfp) < 0) { |
625 |
+ |
fprintf(stderr, "%s: error writing debugging picture\n", |
626 |
+ |
progname); |
627 |
+ |
exit(1); |
628 |
+ |
} |
629 |
+ |
} |
630 |
+ |
/* clean up */ |
631 |
+ |
fclose(debugfp); |
632 |
|
free((char *)scan); |
633 |
|
} |