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/* Copyright (c) 1995 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1997 Regents of the University of California */ |
2 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
90 |
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#define REQFLGS NEUFLGS /* need these colors */ |
91 |
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#define MODFLGS (NEUFLGS|UNSFLGS) /* should be in gamut */ |
92 |
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|
93 |
< |
#define CENTCVG 0.3 /* measured coverage of square sample */ |
94 |
< |
#define FULLCVG 0.9 /* coverage of entire square */ |
93 |
> |
#define RG_BORD 0 /* patch border */ |
94 |
> |
#define RG_CENT 01 /* central region of patch */ |
95 |
> |
#define RG_ORIG 02 /* original color region */ |
96 |
> |
#define RG_CORR 04 /* corrected color region */ |
97 |
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|
98 |
+ |
int scanning = 1; /* scanned input (or recorded output)? */ |
99 |
+ |
|
100 |
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int xmax, ymax; /* input image dimensions */ |
101 |
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int bounds[4][2]; /* image coordinates of chart corners */ |
102 |
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double imgxfm[3][3]; /* coordinate transformation matrix */ |
106 |
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long gmtflags = 0; /* flags of out-of-gamut colors */ |
107 |
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|
108 |
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COLOR bramp[NMBNEU][2]; /* brightness ramp (per primary) */ |
109 |
< |
double solmat[3][3]; /* color mapping matrix */ |
109 |
> |
COLORMAT solmat; /* color mapping matrix */ |
110 |
> |
COLOR colmin, colmax; /* gamut limits */ |
111 |
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|
112 |
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FILE *debugfp = NULL; /* debug output picture */ |
113 |
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char *progname; |
119 |
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int argc; |
120 |
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char **argv; |
121 |
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{ |
117 |
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int inpispic = 1; |
122 |
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int i; |
123 |
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124 |
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progname = argv[0]; |
149 |
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bounds[2][1] = atoi(argv[++i]); |
150 |
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bounds[3][0] = atoi(argv[++i]); |
151 |
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bounds[3][1] = atoi(argv[++i]); |
152 |
< |
inpispic = 2; |
152 |
> |
scanning = 2; |
153 |
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break; |
154 |
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case 'c': /* color input */ |
155 |
< |
inpispic = 0; |
155 |
> |
scanning = 0; |
156 |
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break; |
157 |
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default: |
158 |
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goto userr; |
159 |
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} |
160 |
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/* open files */ |
161 |
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if (i < argc && freopen(argv[i], "r", stdin) == NULL) { |
162 |
< |
perror(argv[1]); |
162 |
> |
perror(argv[i]); |
163 |
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exit(1); |
164 |
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} |
165 |
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if (i+1 < argc && freopen(argv[i+1], "w", stdout) == NULL) { |
166 |
< |
perror(argv[2]); |
166 |
> |
perror(argv[i+1]); |
167 |
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exit(1); |
168 |
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} |
169 |
< |
if (inpispic) { /* load input picture header */ |
169 |
> |
if (scanning) { /* load input picture header */ |
170 |
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#ifdef MSDOS |
171 |
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setmode(fileno(stdin), O_BINARY); |
172 |
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#endif |
179 |
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xmax = 512; |
180 |
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ymax = 2*512/3; |
181 |
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} |
182 |
< |
if (inpispic != 2) { /* use default boundaries */ |
182 |
> |
if (scanning != 2) { /* use default boundaries */ |
183 |
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bounds[0][0] = bounds[2][0] = .029*xmax + .5; |
184 |
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bounds[0][1] = bounds[1][1] = .956*ymax + .5; |
185 |
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bounds[1][0] = bounds[3][0] = .971*xmax + .5; |
186 |
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bounds[2][1] = bounds[3][1] = .056*ymax + .5; |
187 |
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} |
188 |
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init(); /* initialize */ |
189 |
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if (inpispic) /* get picture colors */ |
189 |
> |
if (scanning) /* get picture colors */ |
190 |
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getpicture(); |
191 |
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else |
192 |
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getcolors(); |
193 |
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compute(); /* compute color mapping */ |
194 |
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/* print comment */ |
195 |
< |
printf("{ Color correction file computed by:\n\t"); |
195 |
> |
printf("{\n\tColor correction file computed by:\n\t\t"); |
196 |
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printargs(argc, argv, stdout); |
197 |
+ |
printf("\n\tUsage: pcomb -f %s uncorrected.pic > corrected.pic\n", |
198 |
+ |
i+1 < argc ? argv[i+1] : "{this_file}"); |
199 |
+ |
if (!scanning) |
200 |
+ |
printf("\t Or: pcond [options] -f %s orig.pic > output.pic\n", |
201 |
+ |
i+1 < argc ? argv[i+1] : "{this_file}"); |
202 |
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printf("}\n"); |
203 |
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putmapping(); /* put out color mapping */ |
204 |
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if (debugfp != NULL) /* put out debug picture */ |
205 |
< |
if (inpispic) |
205 |
> |
if (scanning) |
206 |
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picdebug(); |
207 |
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else |
208 |
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clrdebug(); |
242 |
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|
243 |
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|
244 |
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int |
245 |
< |
chartndx(x, y, cvg) /* find color number for position */ |
245 |
> |
chartndx(x, y, np) /* find color number for position */ |
246 |
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int x, y; |
247 |
< |
double cvg; |
247 |
> |
int *np; |
248 |
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{ |
249 |
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double ipos[3], cpos[3]; |
250 |
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int ix, iy; |
251 |
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double fx, fy; |
243 |
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double cmin, cmax; |
252 |
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253 |
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ipos[0] = x; |
254 |
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ipos[1] = y; |
257 |
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cpos[0] /= cpos[2]; |
258 |
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cpos[1] /= cpos[2]; |
259 |
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if (cpos[0] < 0. || cpos[0] >= 6. || cpos[1] < 0. || cpos[1] >= 4.) |
260 |
< |
return(-1); |
260 |
> |
return(RG_BORD); |
261 |
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ix = cpos[0]; |
262 |
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iy = cpos[1]; |
263 |
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fx = cpos[0] - ix; |
264 |
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fy = cpos[1] - iy; |
265 |
< |
cmin = .5*(1.-cvg); |
266 |
< |
cmax = 1. - cmin; |
267 |
< |
if (fx < cmin || fx >= cmax || fy < cmin || fy >= cmax) |
268 |
< |
return(-1); |
269 |
< |
return(iy*6 + ix); |
265 |
> |
*np = iy*6 + ix; |
266 |
> |
if (fx >= 0.35 && fx < 0.65 && fy >= 0.35 && fy < 0.65) |
267 |
> |
return(RG_CENT); |
268 |
> |
if (fx < 0.05 || fx >= 0.95 || fy < 0.05 || fy >= 0.95) |
269 |
> |
return(RG_BORD); |
270 |
> |
if (fx >= 0.5) /* right side is corrected */ |
271 |
> |
return(RG_CORR); |
272 |
> |
return(RG_ORIG); /* left side is original */ |
273 |
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} |
274 |
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|
275 |
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|
279 |
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COLOR pval; |
280 |
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int ccount[24]; |
281 |
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double d; |
282 |
< |
int y; |
283 |
< |
register int x, i; |
282 |
> |
int y, i; |
283 |
> |
register int x; |
284 |
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|
285 |
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scanln = (COLR *)malloc(xmax*sizeof(COLR)); |
286 |
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if (scanln == NULL) { |
297 |
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progname); |
298 |
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exit(1); |
299 |
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} |
300 |
< |
for (x = 0; x < xmax; x++) { |
301 |
< |
i = chartndx(x, y, CENTCVG); |
291 |
< |
if (i >= 0) { |
300 |
> |
for (x = 0; x < xmax; x++) |
301 |
> |
if (chartndx(x, y, &i) == RG_CENT) { |
302 |
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colr_color(pval, scanln[x]); |
303 |
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addcolor(inpRGB[i], pval); |
304 |
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ccount[i]++; |
305 |
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} |
296 |
– |
} |
306 |
|
} |
307 |
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for (i = 0; i < 24; i++) { /* compute averages */ |
308 |
|
if (ccount[i] == 0) |
327 |
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fgetval(stdin, 'f', &xyYin[0]) != 1 || |
328 |
|
fgetval(stdin, 'f', &xyYin[1]) != 1 || |
329 |
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fgetval(stdin, 'f', &xyYin[2]) != 1 || |
330 |
< |
xyYin[0] < 0. | xyYin[0] > 1. | |
331 |
< |
xyYin[1] < 0. | xyYin[1] > 1.) { |
330 |
> |
xyYin[0] < 0. | xyYin[1] < 0. || |
331 |
> |
xyYin[0] + xyYin[1] > 1.) { |
332 |
|
fprintf(stderr, "%s: bad color input data\n", |
333 |
|
progname); |
334 |
|
exit(1); |
386 |
|
COLOR clrin[24], clrout[24]; |
387 |
|
long cflags; |
388 |
|
COLOR ctmp; |
389 |
< |
register int i, j, n; |
389 |
> |
register int i, n; |
390 |
|
/* did we get what we need? */ |
391 |
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if ((inpflags & REQFLGS) != REQFLGS) { |
392 |
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fprintf(stderr, "%s: missing required input colors\n", |
398 |
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copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
399 |
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copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
400 |
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} |
401 |
+ |
/* compute color space gamut */ |
402 |
+ |
if (scanning) { |
403 |
+ |
copycolor(colmin, cblack); |
404 |
+ |
copycolor(colmax, cwhite); |
405 |
+ |
} else |
406 |
+ |
for (i = 0; i < 3; i++) { |
407 |
+ |
colval(colmin,i) = colval(bramp[0][0],i) - |
408 |
+ |
colval(bramp[0][1],i) * |
409 |
+ |
(colval(bramp[1][0],i)-colval(bramp[0][0],i)) / |
410 |
+ |
(colval(bramp[1][1],i)-colval(bramp[1][0],i)); |
411 |
+ |
colval(colmax,i) = colval(bramp[NMBNEU-2][0],i) + |
412 |
+ |
(1.-colval(bramp[NMBNEU-2][1],i)) * |
413 |
+ |
(colval(bramp[NMBNEU-1][0],i) - |
414 |
+ |
colval(bramp[NMBNEU-2][0],i)) / |
415 |
+ |
(colval(bramp[NMBNEU-1][1],i) - |
416 |
+ |
colval(bramp[NMBNEU-2][1],i)); |
417 |
+ |
} |
418 |
|
/* compute color mapping */ |
419 |
|
do { |
420 |
|
cflags = inpflags & ~gmtflags; |
428 |
|
compsoln(clrin, clrout, n); |
429 |
|
/* check out-of-gamut colors */ |
430 |
|
for (i = 0; i < 24; i++) |
431 |
< |
if (cflags & 1L<<i) { |
432 |
< |
cresp(ctmp, mbRGB[i]); |
407 |
< |
for (j = 0; j < 3; j++) |
408 |
< |
if (colval(ctmp,j) <= 0. || |
409 |
< |
colval(ctmp,j) >= 1.) { |
410 |
< |
gmtflags |= 1L<<i; |
411 |
< |
break; |
412 |
< |
} |
413 |
< |
} |
431 |
> |
if (cflags & 1L<<i && cvtcolor(ctmp, mbRGB[i])) |
432 |
> |
gmtflags |= 1L<<i; |
433 |
|
} while (cflags & gmtflags); |
434 |
|
if (gmtflags & MODFLGS) |
435 |
|
fprintf(stderr, |
452 |
|
for (i = 0; i < NMBNEU; i++) |
453 |
|
printf(",%g", colval(bramp[i][1],j)); |
454 |
|
printf(");\n"); |
436 |
– |
printf("%c = %ci(1);\n", cchar[j], cchar[j]); |
455 |
|
printf("%cfi(n) = if(n-%g, %d, if(%cxa(n+1)-%c, n, %cfi(n+1)));\n", |
456 |
|
cchar[j], NMBNEU-1.5, NMBNEU-1, cchar[j], |
457 |
|
cchar[j], cchar[j]); |
458 |
|
printf("%cndx = %cfi(1);\n", cchar[j], cchar[j]); |
459 |
< |
printf("%cn = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
460 |
< |
cchar[j], cchar[j], cchar[j], |
461 |
< |
cchar[j], cchar[j], cchar[j]); |
459 |
> |
printf("%c%c = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
460 |
> |
cchar[j], scanning?'n':'o', cchar[j], |
461 |
> |
cchar[j], cchar[j], cchar[j], cchar[j]); |
462 |
|
printf("(%c-%cxa(%cndx))*%cya(%cndx+1)) /\n", |
463 |
|
cchar[j], cchar[j], cchar[j], |
464 |
|
cchar[j], cchar[j]); |
466 |
|
cchar[j], cchar[j], cchar[j], cchar[j]); |
467 |
|
} |
468 |
|
/* print color mapping */ |
469 |
< |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
470 |
< |
solmat[0][0], solmat[0][1], solmat[0][2]); |
471 |
< |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
472 |
< |
solmat[1][0], solmat[1][1], solmat[1][2]); |
473 |
< |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
474 |
< |
solmat[2][0], solmat[2][1], solmat[2][2]); |
469 |
> |
if (scanning) { |
470 |
> |
printf("r = ri(1); g = gi(1); b = bi(1);\n"); |
471 |
> |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
472 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
473 |
> |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
474 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
475 |
> |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
476 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
477 |
> |
} else { |
478 |
> |
printf("r1 = ri(1); g1 = gi(1); b1 = bi(1);\n"); |
479 |
> |
printf("r = %g*r1 + %g*g1 + %g*b1 ;\n", |
480 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
481 |
> |
printf("g = %g*r1 + %g*g1 + %g*b1 ;\n", |
482 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
483 |
> |
printf("b = %g*r1 + %g*g1 + %g*b1 ;\n", |
484 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
485 |
> |
} |
486 |
|
} |
487 |
|
|
488 |
|
|
546 |
|
} |
547 |
|
|
548 |
|
|
549 |
+ |
int |
550 |
|
cvtcolor(cout, cin) /* convert color according to our mapping */ |
551 |
|
COLOR cout, cin; |
552 |
|
{ |
553 |
|
COLOR ctmp; |
554 |
+ |
int clipped; |
555 |
|
|
556 |
< |
bresp(ctmp, cin); |
557 |
< |
cresp(cout, ctmp); |
558 |
< |
if (colval(cout,RED) < 0.) |
559 |
< |
colval(cout,RED) = 0.; |
560 |
< |
if (colval(cout,GRN) < 0.) |
561 |
< |
colval(cout,GRN) = 0.; |
562 |
< |
if (colval(cout,BLU) < 0.) |
563 |
< |
colval(cout,BLU) = 0.; |
556 |
> |
if (scanning) { |
557 |
> |
bresp(ctmp, cin); |
558 |
> |
clipped = cresp(cout, ctmp); |
559 |
> |
} else { |
560 |
> |
clipped = cresp(ctmp, cin); |
561 |
> |
bresp(cout, ctmp); |
562 |
> |
} |
563 |
> |
return(clipped); |
564 |
|
} |
565 |
|
|
566 |
|
|
567 |
+ |
int |
568 |
|
cresp(cout, cin) /* transform color according to matrix */ |
569 |
|
COLOR cout, cin; |
570 |
|
{ |
571 |
< |
double r, g, b; |
572 |
< |
|
541 |
< |
r = colval(cin,0)*solmat[0][0] + colval(cin,1)*solmat[0][1] |
542 |
< |
+ colval(cin,2)*solmat[0][2]; |
543 |
< |
g = colval(cin,0)*solmat[1][0] + colval(cin,1)*solmat[1][1] |
544 |
< |
+ colval(cin,2)*solmat[1][2]; |
545 |
< |
b = colval(cin,0)*solmat[2][0] + colval(cin,1)*solmat[2][1] |
546 |
< |
+ colval(cin,2)*solmat[2][2]; |
547 |
< |
setcolor(cout, r, g, b); |
571 |
> |
colortrans(cout, solmat, cin); |
572 |
> |
return(clipgamut(cout, bright(cout), CGAMUT, colmin, colmax)); |
573 |
|
} |
574 |
|
|
575 |
|
|
584 |
|
ctmp[0] = xyYin[0] * d; |
585 |
|
ctmp[1] = xyYin[2]; |
586 |
|
ctmp[2] = (1. - xyYin[0] - xyYin[1]) * d; |
587 |
< |
cie_rgb(rgbout, ctmp); |
587 |
> |
/* allow negative values */ |
588 |
> |
colortrans(rgbout, xyz2rgbmat, ctmp); |
589 |
|
} |
590 |
|
|
591 |
|
|
593 |
|
{ |
594 |
|
static COLOR blkcol = BLKCOLOR; |
595 |
|
COLOR *scan; |
596 |
< |
int y; |
597 |
< |
register int x, i; |
596 |
> |
int y, i; |
597 |
> |
register int x, rg; |
598 |
|
|
599 |
|
if (fseek(stdin, 0L, 0) == EOF) { |
600 |
|
fprintf(stderr, "%s: cannot seek on input picture\n", progname); |
620 |
|
exit(1); |
621 |
|
} |
622 |
|
for (x = 0; x < xmax; x++) { |
623 |
< |
i = chartndx(x, y, CENTCVG); |
624 |
< |
if (i < 0) |
623 |
> |
rg = chartndx(x, y, &i); |
624 |
> |
if (rg == RG_CENT) { |
625 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) { |
626 |
> |
copycolor(scan[x], mbRGB[i]); |
627 |
> |
clipgamut(scan[x], bright(scan[x]), |
628 |
> |
CGAMUT, cblack, cwhite); |
629 |
> |
} else |
630 |
> |
copycolor(scan[x], blkcol); |
631 |
> |
} else if (rg == RG_CORR) |
632 |
|
cvtcolor(scan[x], scan[x]); |
633 |
< |
else if (!(1L<<i & gmtflags) || (x+y)&07) |
601 |
< |
copycolor(scan[x], mbRGB[i]); |
602 |
< |
else |
633 |
> |
else if (rg != RG_ORIG) |
634 |
|
copycolor(scan[x], blkcol); |
635 |
|
} |
636 |
|
if (fwritescan(scan, xmax, debugfp) < 0) { |
648 |
|
clrdebug() /* put out debug picture from color input */ |
649 |
|
{ |
650 |
|
static COLR blkclr = BLKCOLR; |
651 |
< |
COLR mbclr[24], cvclr[24]; |
651 |
> |
COLR mbclr[24], cvclr[24], orclr[24]; |
652 |
|
COLR *scan; |
653 |
< |
COLOR ctmp; |
654 |
< |
int y; |
655 |
< |
register int i, x; |
653 |
> |
COLOR ctmp, ct2; |
654 |
> |
int y, i; |
655 |
> |
register int x, rg; |
656 |
|
/* convert colors */ |
657 |
|
for (i = 0; i < 24; i++) { |
658 |
< |
setcolr(mbclr[i], colval(mbRGB[i],RED), |
659 |
< |
colval(mbRGB[i],GRN), colval(mbRGB[i],BLU)); |
658 |
> |
copycolor(ctmp, mbRGB[i]); |
659 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
660 |
> |
setcolr(mbclr[i], colval(ctmp,RED), |
661 |
> |
colval(ctmp,GRN), colval(ctmp,BLU)); |
662 |
|
if (inpflags & 1L<<i) { |
663 |
< |
cvtcolor(ctmp, inpRGB[i]); |
664 |
< |
setcolr(cvclr[i], colval(ctmp,RED), |
663 |
> |
copycolor(ctmp, inpRGB[i]); |
664 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
665 |
> |
setcolr(orclr[i], colval(ctmp,RED), |
666 |
|
colval(ctmp,GRN), colval(ctmp,BLU)); |
667 |
+ |
bresp(ctmp, inpRGB[i]); |
668 |
+ |
colortrans(ct2, solmat, ctmp); |
669 |
+ |
clipgamut(ct2, bright(ct2), CGAMUT, cblack, cwhite); |
670 |
+ |
setcolr(cvclr[i], colval(ct2,RED), |
671 |
+ |
colval(ct2,GRN), colval(ct2,BLU)); |
672 |
|
} |
673 |
|
} |
674 |
|
/* allocate scanline */ |
683 |
|
fprtresolu(xmax, ymax, debugfp); |
684 |
|
/* write debug picture */ |
685 |
|
for (y = ymax-1; y >= 0; y--) { |
686 |
< |
for (x = 0; x < xmax; x++) |
687 |
< |
if ((i = chartndx(x, y, CENTCVG)) >= 0) { |
686 |
> |
for (x = 0; x < xmax; x++) { |
687 |
> |
rg = chartndx(x, y, &i); |
688 |
> |
if (rg == RG_CENT) { |
689 |
|
if (!(1L<<i & gmtflags) || (x+y)&07) |
690 |
|
copycolr(scan[x], mbclr[i]); |
691 |
|
else |
692 |
|
copycolr(scan[x], blkclr); |
693 |
< |
} else if ((i = chartndx(x, y, FULLCVG)) >= 0 && |
654 |
< |
inpflags & 1L<<i) |
655 |
< |
copycolr(scan[x], cvclr[i]); |
656 |
< |
else |
693 |
> |
} else if (rg == RG_BORD || !(1L<<i & inpflags)) |
694 |
|
copycolr(scan[x], blkclr); |
695 |
+ |
else if (rg == RG_ORIG) |
696 |
+ |
copycolr(scan[x], orclr[i]); |
697 |
+ |
else /* rg == RG_CORR */ |
698 |
+ |
copycolr(scan[x], cvclr[i]); |
699 |
+ |
} |
700 |
|
if (fwritecolrs(scan, xmax, debugfp) < 0) { |
701 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
702 |
|
progname); |