77 |
|
#define NMBNEU 6 /* Number of MacBeth neutral colors */ |
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 |
< |
}; |
80 |
> |
#define NEUFLGS (1L<<White|1L<<Neutral8|1L<<Neutral65| \ |
81 |
> |
1L<<Neutral5|1L<<Neutral35|1L<<Black) |
82 |
|
|
83 |
< |
#define NMBSAT 8 /* Number of MacBeth saturated colors */ |
84 |
< |
short mbsat[NMBSAT] = { |
85 |
< |
Red,Green,Blue,Magenta,Yellow,Cyan, |
90 |
< |
Orange,Purple |
91 |
< |
}; |
83 |
> |
#define SATFLGS (1L<<Red|1L<<Green|1L<<Blue|1L<<Magenta|1L<<Yellow| \ |
84 |
> |
1L<<Cyan|1L<<Orange|1L<<Purple|1L<<PurplishBlue| \ |
85 |
> |
1L<<YellowGreen|1<<OrangeYellow|1L<<BlueFlower) |
86 |
|
|
87 |
< |
#define REQFLGS (1L<<White|1L<<Neutral8|1L<<Neutral65| \ |
88 |
< |
1L<<Neutral5|1L<<Neutral35|1L<<Black) |
87 |
> |
#define UNSFLGS (1L<<DarkSkin|1L<<LightSkin|1L<<BlueSky|1L<<Foliage| \ |
88 |
> |
1L<<BluishGreen|1L<<ModerateRed) |
89 |
|
|
90 |
< |
#define CENTCVG 0.3 /* measured coverage of square sample */ |
91 |
< |
#define FULLCVG 0.9 /* coverage of entire square */ |
90 |
> |
#define REQFLGS NEUFLGS /* need these colors */ |
91 |
> |
#define MODFLGS (NEUFLGS|UNSFLGS) /* should be in gamut */ |
92 |
|
|
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 |
+ |
|
98 |
+ |
int scanning = 1; /* scanned input (or recorded output)? */ |
99 |
+ |
|
100 |
|
int xmax, ymax; /* input image dimensions */ |
101 |
|
int bounds[4][2]; /* image coordinates of chart corners */ |
102 |
|
double imgxfm[3][3]; /* coordinate transformation matrix */ |
103 |
|
|
104 |
|
COLOR inpRGB[24]; /* measured or scanned input colors */ |
105 |
|
long inpflags = 0; /* flags of which colors were input */ |
106 |
+ |
long gmtflags = 0; /* flags of out-of-gamut colors */ |
107 |
|
|
108 |
|
COLOR bramp[NMBNEU][2]; /* brightness ramp (per primary) */ |
109 |
|
double solmat[3][3]; /* color mapping matrix */ |
118 |
|
int argc; |
119 |
|
char **argv; |
120 |
|
{ |
119 |
– |
int inpispic = 1; |
121 |
|
int i; |
122 |
|
|
123 |
|
progname = argv[0]; |
148 |
|
bounds[2][1] = atoi(argv[++i]); |
149 |
|
bounds[3][0] = atoi(argv[++i]); |
150 |
|
bounds[3][1] = atoi(argv[++i]); |
151 |
< |
inpispic = 2; |
151 |
> |
scanning = 2; |
152 |
|
break; |
153 |
|
case 'c': /* color input */ |
154 |
< |
inpispic = 0; |
154 |
> |
scanning = 0; |
155 |
|
break; |
156 |
|
default: |
157 |
|
goto userr; |
165 |
|
perror(argv[2]); |
166 |
|
exit(1); |
167 |
|
} |
168 |
< |
if (inpispic) { /* load input picture header */ |
168 |
> |
if (scanning) { /* load input picture header */ |
169 |
|
#ifdef MSDOS |
170 |
|
setmode(fileno(stdin), O_BINARY); |
171 |
|
#endif |
178 |
|
xmax = 512; |
179 |
|
ymax = 2*512/3; |
180 |
|
} |
181 |
< |
if (inpispic != 2) { /* use default boundaries */ |
181 |
> |
if (scanning != 2) { /* use default boundaries */ |
182 |
|
bounds[0][0] = bounds[2][0] = .029*xmax + .5; |
183 |
|
bounds[0][1] = bounds[1][1] = .956*ymax + .5; |
184 |
|
bounds[1][0] = bounds[3][0] = .971*xmax + .5; |
185 |
|
bounds[2][1] = bounds[3][1] = .056*ymax + .5; |
186 |
|
} |
187 |
|
init(); /* initialize */ |
188 |
< |
if (inpispic) /* get picture colors */ |
188 |
> |
if (scanning) /* get picture colors */ |
189 |
|
getpicture(); |
190 |
|
else |
191 |
|
getcolors(); |
192 |
|
compute(); /* compute color mapping */ |
193 |
|
/* print comment */ |
194 |
< |
printf("{ Color correction file computed by:\n\t"); |
194 |
> |
printf("{\n\tColor correction file computed by:\n\t\t"); |
195 |
|
printargs(argc, argv, stdout); |
196 |
+ |
printf("\n\tUsage: pcomb -f %s uncorrected.pic > corrected.pic\n", |
197 |
+ |
i+1 < argc ? argv[i+1] : "{this_file}"); |
198 |
+ |
if (!scanning) |
199 |
+ |
printf("\t Or: pcond [options] -f %s orig.pic > output.pic\n", |
200 |
+ |
i+1 < argc ? argv[i+1] : "{this_file}"); |
201 |
|
printf("}\n"); |
202 |
|
putmapping(); /* put out color mapping */ |
203 |
|
if (debugfp != NULL) /* put out debug picture */ |
204 |
< |
if (inpispic) |
204 |
> |
if (scanning) |
205 |
|
picdebug(); |
206 |
|
else |
207 |
|
clrdebug(); |
241 |
|
|
242 |
|
|
243 |
|
int |
244 |
< |
chartndx(x, y, cvg) /* find color number for position */ |
244 |
> |
chartndx(x, y, np) /* find color number for position */ |
245 |
|
int x, y; |
246 |
< |
double cvg; |
246 |
> |
int *np; |
247 |
|
{ |
248 |
|
double ipos[3], cpos[3]; |
249 |
|
int ix, iy; |
250 |
|
double fx, fy; |
245 |
– |
double cmin, cmax; |
251 |
|
|
252 |
|
ipos[0] = x; |
253 |
|
ipos[1] = y; |
256 |
|
cpos[0] /= cpos[2]; |
257 |
|
cpos[1] /= cpos[2]; |
258 |
|
if (cpos[0] < 0. || cpos[0] >= 6. || cpos[1] < 0. || cpos[1] >= 4.) |
259 |
< |
return(-1); |
259 |
> |
return(RG_BORD); |
260 |
|
ix = cpos[0]; |
261 |
|
iy = cpos[1]; |
262 |
|
fx = cpos[0] - ix; |
263 |
|
fy = cpos[1] - iy; |
264 |
< |
cmin = .5*(1.-cvg); |
265 |
< |
cmax = 1. - cmin; |
266 |
< |
if (fx < cmin || fx >= cmax || fy < cmin || fy >= cmax) |
267 |
< |
return(-1); |
268 |
< |
return(iy*6 + ix); |
264 |
> |
*np = iy*6 + ix; |
265 |
> |
if (fx >= 0.35 && fx < 0.65 && fy >= 0.35 && fy < 0.65) |
266 |
> |
return(RG_CENT); |
267 |
> |
if (fx < 0.05 || fx >= 0.95 || fy < 0.05 || fy >= 0.95) |
268 |
> |
return(RG_BORD); |
269 |
> |
if (fx >= 0.5) /* right side is corrected */ |
270 |
> |
return(RG_CORR); |
271 |
> |
return(RG_ORIG); /* left side is original */ |
272 |
|
} |
273 |
|
|
274 |
|
|
278 |
|
COLOR pval; |
279 |
|
int ccount[24]; |
280 |
|
double d; |
281 |
< |
int y; |
282 |
< |
register int x, i; |
281 |
> |
int y, i; |
282 |
> |
register int x; |
283 |
|
|
284 |
|
scanln = (COLR *)malloc(xmax*sizeof(COLR)); |
285 |
|
if (scanln == NULL) { |
296 |
|
progname); |
297 |
|
exit(1); |
298 |
|
} |
299 |
< |
for (x = 0; x < xmax; x++) { |
300 |
< |
i = chartndx(x, y, CENTCVG); |
293 |
< |
if (i >= 0) { |
299 |
> |
for (x = 0; x < xmax; x++) |
300 |
> |
if (chartndx(x, y, &i) == RG_CENT) { |
301 |
|
colr_color(pval, scanln[x]); |
302 |
|
addcolor(inpRGB[i], pval); |
303 |
|
ccount[i]++; |
304 |
|
} |
298 |
– |
} |
305 |
|
} |
306 |
|
for (i = 0; i < 24; i++) { /* compute averages */ |
307 |
|
if (ccount[i] == 0) |
365 |
|
bresp(y, x) /* piecewise linear interpolation of primaries */ |
366 |
|
COLOR y, x; |
367 |
|
{ |
362 |
– |
double cv[3]; |
368 |
|
register int i, n; |
369 |
|
|
370 |
|
for (i = 0; i < 3; i++) { |
371 |
|
for (n = 0; n < NMBNEU-2; n++) |
372 |
|
if (colval(x,i) < colval(bramp[n+1][0],i)) |
373 |
|
break; |
374 |
< |
cv[i] = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
374 |
> |
colval(y,i) = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
375 |
|
colval(bramp[n][1],i) + |
376 |
|
(colval(x,i) - colval(bramp[n][0],i)) * |
377 |
|
colval(bramp[n+1][1],i)) / |
378 |
|
(colval(bramp[n+1][0],i) - colval(bramp[n][0],i)); |
374 |
– |
if (cv[i] < 0.) cv[i] = 0.; |
379 |
|
} |
376 |
– |
setcolor(y, cv[0], cv[1], cv[2]); |
380 |
|
} |
381 |
|
|
382 |
|
|
383 |
|
compute() /* compute color mapping */ |
384 |
|
{ |
385 |
< |
COLOR clrin[NMBMOD], clrout[NMBMOD]; |
386 |
< |
register int i, n; |
385 |
> |
COLOR clrin[24], clrout[24]; |
386 |
> |
long cflags; |
387 |
> |
COLOR ctmp; |
388 |
> |
register int i, j, n; |
389 |
|
/* did we get what we need? */ |
390 |
|
if ((inpflags & REQFLGS) != REQFLGS) { |
391 |
|
fprintf(stderr, "%s: missing required input colors\n", |
397 |
|
copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
398 |
|
copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
399 |
|
} |
400 |
< |
/* compute color matrix */ |
401 |
< |
for (n = 0, i = 0; i < NMBMOD; i++) |
402 |
< |
if (inpflags & 1L<<mbmod[i]) { |
403 |
< |
bresp(clrin[n], inpRGB[mbmod[i]]); |
404 |
< |
copycolor(clrout[n], mbRGB[mbmod[i]]); |
405 |
< |
n++; |
406 |
< |
} |
407 |
< |
compsoln(clrin, clrout, n); |
400 |
> |
/* compute color mapping */ |
401 |
> |
do { |
402 |
> |
cflags = inpflags & ~gmtflags; |
403 |
> |
n = 0; /* compute transform matrix */ |
404 |
> |
for (i = 0; i < 24; i++) |
405 |
> |
if (cflags & 1L<<i) { |
406 |
> |
bresp(clrin[n], inpRGB[i]); |
407 |
> |
copycolor(clrout[n], mbRGB[i]); |
408 |
> |
n++; |
409 |
> |
} |
410 |
> |
compsoln(clrin, clrout, n); |
411 |
> |
/* check out-of-gamut colors */ |
412 |
> |
for (i = 0; i < 24; i++) |
413 |
> |
if (cflags & 1L<<i) { |
414 |
> |
cvtcolor(ctmp, mbRGB[i]); |
415 |
> |
for (j = 0; j < 3; j++) |
416 |
> |
if (colval(ctmp,j) <= 1e-6 || |
417 |
> |
colval(ctmp,j) >= 1.-1e-6) { |
418 |
> |
gmtflags |= 1L<<i; |
419 |
> |
break; |
420 |
> |
} |
421 |
> |
} |
422 |
> |
} while (cflags & gmtflags); |
423 |
> |
if (gmtflags & MODFLGS) |
424 |
> |
fprintf(stderr, |
425 |
> |
"%s: warning - some moderate colors are out of gamut\n", |
426 |
> |
progname); |
427 |
|
} |
428 |
|
|
429 |
|
|
441 |
|
for (i = 0; i < NMBNEU; i++) |
442 |
|
printf(",%g", colval(bramp[i][1],j)); |
443 |
|
printf(");\n"); |
420 |
– |
printf("%c = %ci(1);\n", cchar[j], cchar[j]); |
444 |
|
printf("%cfi(n) = if(n-%g, %d, if(%cxa(n+1)-%c, n, %cfi(n+1)));\n", |
445 |
|
cchar[j], NMBNEU-1.5, NMBNEU-1, cchar[j], |
446 |
|
cchar[j], cchar[j]); |
447 |
|
printf("%cndx = %cfi(1);\n", cchar[j], cchar[j]); |
448 |
< |
printf("%cn = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
449 |
< |
cchar[j], cchar[j], cchar[j], |
450 |
< |
cchar[j], cchar[j], cchar[j]); |
448 |
> |
printf("%c%c = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
449 |
> |
cchar[j], scanning?'n':'o', cchar[j], |
450 |
> |
cchar[j], cchar[j], cchar[j], cchar[j]); |
451 |
|
printf("(%c-%cxa(%cndx))*%cya(%cndx+1)) /\n", |
452 |
|
cchar[j], cchar[j], cchar[j], |
453 |
|
cchar[j], cchar[j]); |
455 |
|
cchar[j], cchar[j], cchar[j], cchar[j]); |
456 |
|
} |
457 |
|
/* print color mapping */ |
458 |
< |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
459 |
< |
solmat[0][0], solmat[0][1], solmat[0][2]); |
460 |
< |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
461 |
< |
solmat[1][0], solmat[1][1], solmat[1][2]); |
462 |
< |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
463 |
< |
solmat[2][0], solmat[2][1], solmat[2][2]); |
458 |
> |
if (scanning) { |
459 |
> |
printf("r = ri(1); g = gi(1); b = bi(1);\n"); |
460 |
> |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
461 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
462 |
> |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
463 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
464 |
> |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
465 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
466 |
> |
} else { |
467 |
> |
printf("r1 = ri(1); g1 = gi(1); b1 = bi(1);\n"); |
468 |
> |
printf("r = %g*r1 + %g*g1 + %g*b1 ;\n", |
469 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
470 |
> |
printf("g = %g*r1 + %g*g1 + %g*b1 ;\n", |
471 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
472 |
> |
printf("b = %g*r1 + %g*g1 + %g*b1 ;\n", |
473 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
474 |
> |
} |
475 |
|
} |
476 |
|
|
477 |
|
|
485 |
|
double colv[3], rowv[3]; |
486 |
|
register int i, j, k; |
487 |
|
|
488 |
< |
if (n < 3 | n > NMBMOD) { |
489 |
< |
fprintf(stderr, "%s: bad number of colors to match\n", progname); |
488 |
> |
if (n < 3) { |
489 |
> |
fprintf(stderr, "%s: too few colors to match!\n", progname); |
490 |
|
exit(1); |
491 |
|
} |
492 |
|
if (n == 3) |
538 |
|
cvtcolor(cout, cin) /* convert color according to our mapping */ |
539 |
|
COLOR cout, cin; |
540 |
|
{ |
541 |
+ |
COLOR ctmp; |
542 |
+ |
|
543 |
+ |
if (scanning) { |
544 |
+ |
bresp(ctmp, cin); |
545 |
+ |
cresp(cout, ctmp); |
546 |
+ |
} else { |
547 |
+ |
cresp(ctmp, cin); |
548 |
+ |
bresp(cout, ctmp); |
549 |
+ |
} |
550 |
+ |
if (colval(cout,RED) < 0.) |
551 |
+ |
colval(cout,RED) = 0.; |
552 |
+ |
if (colval(cout,GRN) < 0.) |
553 |
+ |
colval(cout,GRN) = 0.; |
554 |
+ |
if (colval(cout,BLU) < 0.) |
555 |
+ |
colval(cout,BLU) = 0.; |
556 |
+ |
} |
557 |
+ |
|
558 |
+ |
|
559 |
+ |
cresp(cout, cin) /* transform color according to matrix */ |
560 |
+ |
COLOR cout, cin; |
561 |
+ |
{ |
562 |
|
double r, g, b; |
563 |
|
|
564 |
< |
bresp(cout, cin); |
565 |
< |
r = colval(cout,0)*solmat[0][0] + colval(cout,1)*solmat[0][1] |
566 |
< |
+ colval(cout,2)*solmat[0][2]; |
567 |
< |
if (r < 0) r = 0; |
568 |
< |
g = colval(cout,0)*solmat[1][0] + colval(cout,1)*solmat[1][1] |
569 |
< |
+ 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; |
564 |
> |
r = colval(cin,0)*solmat[0][0] + colval(cin,1)*solmat[0][1] |
565 |
> |
+ colval(cin,2)*solmat[0][2]; |
566 |
> |
g = colval(cin,0)*solmat[1][0] + colval(cin,1)*solmat[1][1] |
567 |
> |
+ colval(cin,2)*solmat[1][2]; |
568 |
> |
b = colval(cin,0)*solmat[2][0] + colval(cin,1)*solmat[2][1] |
569 |
> |
+ colval(cin,2)*solmat[2][2]; |
570 |
|
setcolor(cout, r, g, b); |
571 |
|
} |
572 |
|
|
588 |
|
|
589 |
|
picdebug() /* put out debugging picture */ |
590 |
|
{ |
591 |
+ |
static COLOR blkcol = BLKCOLOR; |
592 |
|
COLOR *scan; |
593 |
< |
int y; |
594 |
< |
register int x, i; |
593 |
> |
int y, i; |
594 |
> |
register int x, rg; |
595 |
|
|
596 |
|
if (fseek(stdin, 0L, 0) == EOF) { |
597 |
|
fprintf(stderr, "%s: cannot seek on input picture\n", progname); |
617 |
|
exit(1); |
618 |
|
} |
619 |
|
for (x = 0; x < xmax; x++) { |
620 |
< |
i = chartndx(x, y, CENTCVG); |
621 |
< |
if (i < 0) |
620 |
> |
rg = chartndx(x, y, &i); |
621 |
> |
if (rg == RG_CENT) { |
622 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) |
623 |
> |
copycolor(scan[x], mbRGB[i]); |
624 |
> |
else |
625 |
> |
copycolor(scan[x], blkcol); |
626 |
> |
} else if (rg == RG_CORR) |
627 |
|
cvtcolor(scan[x], scan[x]); |
628 |
< |
else |
629 |
< |
copycolor(scan[x], mbRGB[i]); |
628 |
> |
else if (rg != RG_ORIG) |
629 |
> |
copycolor(scan[x], blkcol); |
630 |
|
} |
631 |
|
if (fwritescan(scan, xmax, debugfp) < 0) { |
632 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
643 |
|
clrdebug() /* put out debug picture from color input */ |
644 |
|
{ |
645 |
|
static COLR blkclr = BLKCOLR; |
646 |
< |
COLR mbclr[24], cvclr[24]; |
646 |
> |
COLR mbclr[24], cvclr[24], orclr[24]; |
647 |
|
COLR *scan; |
648 |
|
COLOR ctmp; |
649 |
< |
int y; |
650 |
< |
register int i, x; |
649 |
> |
int y, i; |
650 |
> |
register int x, rg; |
651 |
|
/* convert colors */ |
652 |
|
for (i = 0; i < 24; i++) { |
653 |
|
setcolr(mbclr[i], colval(mbRGB[i],RED), |
654 |
|
colval(mbRGB[i],GRN), colval(mbRGB[i],BLU)); |
655 |
|
if (inpflags & 1L<<i) { |
656 |
+ |
setcolr(orclr[i], colval(inpRGB[i],RED), |
657 |
+ |
colval(inpRGB[i],GRN), |
658 |
+ |
colval(inpRGB[i],BLU)); |
659 |
|
cvtcolor(ctmp, inpRGB[i]); |
660 |
|
setcolr(cvclr[i], colval(ctmp,RED), |
661 |
|
colval(ctmp,GRN), colval(ctmp,BLU)); |
673 |
|
fprtresolu(xmax, ymax, debugfp); |
674 |
|
/* write debug picture */ |
675 |
|
for (y = ymax-1; y >= 0; y--) { |
676 |
< |
for (x = 0; x < xmax; x++) |
677 |
< |
if ((i = chartndx(x, y, CENTCVG)) >= 0) |
678 |
< |
copycolr(scan[x], mbclr[i]); |
679 |
< |
else if ((i = chartndx(x, y, FULLCVG)) >= 0 && |
680 |
< |
inpflags & 1L<<i) |
681 |
< |
copycolr(scan[x], cvclr[i]); |
682 |
< |
else |
676 |
> |
for (x = 0; x < xmax; x++) { |
677 |
> |
rg = chartndx(x, y, &i); |
678 |
> |
if (rg == RG_CENT) { |
679 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) |
680 |
> |
copycolr(scan[x], mbclr[i]); |
681 |
> |
else |
682 |
> |
copycolr(scan[x], blkclr); |
683 |
> |
} else if (rg == RG_BORD || !(1L<<i & inpflags)) |
684 |
|
copycolr(scan[x], blkclr); |
685 |
+ |
else if (rg == RG_ORIG) |
686 |
+ |
copycolr(scan[x], orclr[i]); |
687 |
+ |
else /* rg == RG_CORR */ |
688 |
+ |
copycolr(scan[x], cvclr[i]); |
689 |
+ |
} |
690 |
|
if (fwritecolrs(scan, xmax, debugfp) < 0) { |
691 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
692 |
|
progname); |