| 1 |
– |
/* Copyright (c) 1997 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#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 |
| 97 |
|
#define RG_ORIG 02 /* original color region */ |
| 98 |
|
#define RG_CORR 04 /* corrected color region */ |
| 99 |
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|
| 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 |
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|
| 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 */ |
| 114 |
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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 |
|
|
| 120 |
+ |
WARP3D *wcor = NULL; /* color space warp */ |
| 121 |
+ |
|
| 122 |
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FILE *debugfp = NULL; /* debug output picture */ |
| 123 |
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char *progname; |
| 124 |
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|
| 114 |
– |
extern char *malloc(); |
| 125 |
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|
| 116 |
– |
|
| 126 |
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main(argc, argv) |
| 127 |
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int argc; |
| 128 |
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char **argv; |
| 140 |
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perror(argv[i]); |
| 141 |
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exit(1); |
| 142 |
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} |
| 143 |
< |
#ifdef MSDOS |
| 135 |
< |
setmode(fileno(debugfp), O_BINARY); |
| 136 |
< |
#endif |
| 143 |
> |
SET_FILE_BINARY(debugfp); |
| 144 |
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newheader("RADIANCE", debugfp); /* start */ |
| 145 |
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printargs(argc, argv, debugfp); /* header */ |
| 146 |
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break; |
| 157 |
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bounds[3][1] = atoi(argv[++i]); |
| 158 |
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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; |
| 177 |
|
} |
| 178 |
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/* open files */ |
| 179 |
|
if (i < argc && freopen(argv[i], "r", stdin) == NULL) { |
| 180 |
< |
perror(argv[1]); |
| 180 |
> |
perror(argv[i]); |
| 181 |
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exit(1); |
| 182 |
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} |
| 183 |
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if (i+1 < argc && freopen(argv[i+1], "w", stdout) == NULL) { |
| 184 |
< |
perror(argv[2]); |
| 184 |
> |
perror(argv[i+1]); |
| 185 |
|
exit(1); |
| 186 |
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} |
| 187 |
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if (scanning) { /* load input picture header */ |
| 188 |
< |
#ifdef MSDOS |
| 170 |
< |
setmode(fileno(stdin), O_BINARY); |
| 171 |
< |
#endif |
| 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 |
+ |
pickchartpos(argv[i]); |
| 198 |
+ |
scanning = 2; |
| 199 |
+ |
} |
| 200 |
|
} else { /* else set default xmax and ymax */ |
| 201 |
|
xmax = 512; |
| 202 |
|
ymax = 2*512/3; |
| 213 |
|
else |
| 214 |
|
getcolors(); |
| 215 |
|
compute(); /* compute color mapping */ |
| 216 |
< |
/* print comment */ |
| 217 |
< |
printf("{\n\tColor correction file computed by:\n\t\t"); |
| 218 |
< |
printargs(argc, argv, stdout); |
| 219 |
< |
printf("\n\tUsage: pcomb -f %s uncorrected.pic > corrected.pic\n", |
| 220 |
< |
i+1 < argc ? argv[i+1] : "{this_file}"); |
| 221 |
< |
if (!scanning) |
| 199 |
< |
printf("\t Or: pcond [options] -f %s orig.pic > output.pic\n", |
| 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("}\n"); |
| 224 |
< |
putmapping(); /* put out color mapping */ |
| 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(); |
| 249 |
|
exit(0); |
| 250 |
|
userr: |
| 251 |
|
fprintf(stderr, |
| 252 |
< |
"Usage: %s [-d dbg.pic][-p xul yul xur yur xll yll xlr ylr] input.pic [output.cal]\n", |
| 252 |
> |
"Usage: %s [-d dbg.pic][-P | -p xul yul xur yur xll yll xlr ylr][-i irrad][-m] input.pic [output.{cal|cwp}]\n", |
| 253 |
|
progname); |
| 254 |
< |
fprintf(stderr, " or: %s [-d dbg.pic] -c [xyY.dat [output.cal]]\n", |
| 254 |
> |
fprintf(stderr, " or: %s [-d dbg.pic][-i irrad][-m] -c [xyY.dat [output.{cal|cwp}]]\n", |
| 255 |
|
progname); |
| 256 |
|
exit(1); |
| 257 |
|
} |
| 276 |
|
exit(1); |
| 277 |
|
} |
| 278 |
|
/* map MacBeth colors to RGB space */ |
| 279 |
< |
for (i = 0; i < 24; i++) |
| 279 |
> |
for (i = 0; i < 24; i++) { |
| 280 |
|
xyY2RGB(mbRGB[i], mbxyY[i]); |
| 281 |
+ |
scalecolor(mbRGB[i], irrad); |
| 282 |
+ |
} |
| 283 |
|
} |
| 284 |
|
|
| 285 |
|
|
| 353 |
|
scalecolor(inpRGB[i], d); |
| 354 |
|
inpflags |= 1L<<i; |
| 355 |
|
} |
| 356 |
< |
free((char *)scanln); |
| 356 |
> |
free((void *)scanln); |
| 357 |
|
} |
| 358 |
|
|
| 359 |
|
|
| 428 |
|
COLOR clrin[24], clrout[24]; |
| 429 |
|
long cflags; |
| 430 |
|
COLOR ctmp; |
| 431 |
< |
register int i, j, n; |
| 431 |
> |
register int i, n; |
| 432 |
|
/* did we get what we need? */ |
| 433 |
|
if ((inpflags & REQFLGS) != REQFLGS) { |
| 434 |
|
fprintf(stderr, "%s: missing required input colors\n", |
| 440 |
|
copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
| 441 |
|
copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
| 442 |
|
} |
| 443 |
+ |
/* compute color space gamut */ |
| 444 |
+ |
if (scanning) { |
| 445 |
+ |
copycolor(colmin, cblack); |
| 446 |
+ |
copycolor(colmax, cwhite); |
| 447 |
+ |
scalecolor(colmax, irrad); |
| 448 |
+ |
} else |
| 449 |
+ |
for (i = 0; i < 3; i++) { |
| 450 |
+ |
colval(colmin,i) = colval(bramp[0][0],i) - |
| 451 |
+ |
colval(bramp[0][1],i) * |
| 452 |
+ |
(colval(bramp[1][0],i)-colval(bramp[0][0],i)) / |
| 453 |
+ |
(colval(bramp[1][1],i)-colval(bramp[1][0],i)); |
| 454 |
+ |
colval(colmax,i) = colval(bramp[NMBNEU-2][0],i) + |
| 455 |
+ |
(1.-colval(bramp[NMBNEU-2][1],i)) * |
| 456 |
+ |
(colval(bramp[NMBNEU-1][0],i) - |
| 457 |
+ |
colval(bramp[NMBNEU-2][0],i)) / |
| 458 |
+ |
(colval(bramp[NMBNEU-1][1],i) - |
| 459 |
+ |
colval(bramp[NMBNEU-2][1],i)); |
| 460 |
+ |
} |
| 461 |
|
/* compute color mapping */ |
| 462 |
|
do { |
| 463 |
|
cflags = inpflags & ~gmtflags; |
| 469 |
|
n++; |
| 470 |
|
} |
| 471 |
|
compsoln(clrin, clrout, n); |
| 472 |
< |
/* check out-of-gamut colors */ |
| 473 |
< |
for (i = 0; i < 24; i++) |
| 474 |
< |
if (cflags & 1L<<i) { |
| 475 |
< |
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 |
< |
} |
| 472 |
> |
if (irrad > 0.99 && irrad < 1.01) /* check gamut */ |
| 473 |
> |
for (i = 0; i < 24; i++) |
| 474 |
> |
if (cflags & 1L<<i && cvtcolor(ctmp, mbRGB[i])) |
| 475 |
> |
gmtflags |= 1L<<i; |
| 476 |
|
} while (cflags & gmtflags); |
| 477 |
|
if (gmtflags & MODFLGS) |
| 478 |
|
fprintf(stderr, |
| 481 |
|
} |
| 482 |
|
|
| 483 |
|
|
| 484 |
< |
putmapping() /* put out color mapping for pcomb -f */ |
| 484 |
> |
putmapping() /* put out color mapping */ |
| 485 |
|
{ |
| 486 |
|
static char cchar[3] = {'r', 'g', 'b'}; |
| 487 |
|
register int i, j; |
| 589 |
|
} |
| 590 |
|
|
| 591 |
|
|
| 592 |
+ |
cwarp() /* compute color warp map */ |
| 593 |
+ |
{ |
| 594 |
+ |
register int i; |
| 595 |
+ |
|
| 596 |
+ |
if ((wcor = new3dw(W3EXACT)) == NULL) |
| 597 |
+ |
goto memerr; |
| 598 |
+ |
for (i = 0; i < 24; i++) |
| 599 |
+ |
if (!add3dpt(wcor, inpRGB[i], mbRGB[i])) |
| 600 |
+ |
goto memerr; |
| 601 |
+ |
return; |
| 602 |
+ |
memerr: |
| 603 |
+ |
perror(progname); |
| 604 |
+ |
exit(1); |
| 605 |
+ |
} |
| 606 |
+ |
|
| 607 |
+ |
|
| 608 |
+ |
int |
| 609 |
|
cvtcolor(cout, cin) /* convert color according to our mapping */ |
| 610 |
|
COLOR cout, cin; |
| 611 |
|
{ |
| 612 |
|
COLOR ctmp; |
| 613 |
+ |
int clipped; |
| 614 |
|
|
| 615 |
< |
if (scanning) { |
| 615 |
> |
if (wcor != NULL) { |
| 616 |
> |
clipped = warp3d(cout, cin, wcor); |
| 617 |
> |
clipped |= clipgamut(cout,bright(cout),CGAMUT,colmin,colmax); |
| 618 |
> |
} else if (scanning) { |
| 619 |
|
bresp(ctmp, cin); |
| 620 |
< |
cresp(cout, ctmp); |
| 620 |
> |
clipped = cresp(cout, ctmp); |
| 621 |
|
} else { |
| 622 |
< |
cresp(ctmp, cin); |
| 622 |
> |
clipped = cresp(ctmp, cin); |
| 623 |
|
bresp(cout, ctmp); |
| 624 |
|
} |
| 625 |
< |
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.; |
| 625 |
> |
return(clipped); |
| 626 |
|
} |
| 627 |
|
|
| 628 |
|
|
| 629 |
+ |
int |
| 630 |
|
cresp(cout, cin) /* transform color according to matrix */ |
| 631 |
|
COLOR cout, cin; |
| 632 |
|
{ |
| 633 |
< |
double r, g, b; |
| 634 |
< |
|
| 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); |
| 633 |
> |
colortrans(cout, solmat, cin); |
| 634 |
> |
return(clipgamut(cout, bright(cout), CGAMUT, colmin, colmax)); |
| 635 |
|
} |
| 636 |
|
|
| 637 |
|
|
| 646 |
|
ctmp[0] = xyYin[0] * d; |
| 647 |
|
ctmp[1] = xyYin[2]; |
| 648 |
|
ctmp[2] = (1. - xyYin[0] - xyYin[1]) * d; |
| 585 |
– |
cie_rgb(rgbout, ctmp); |
| 649 |
|
/* allow negative values */ |
| 650 |
< |
colortrans(rgbout, xyz2rgbmat, ctmp, 0); |
| 650 |
> |
colortrans(rgbout, xyz2rgbmat, ctmp); |
| 651 |
|
} |
| 652 |
|
|
| 653 |
|
|
| 684 |
|
for (x = 0; x < xmax; x++) { |
| 685 |
|
rg = chartndx(x, y, &i); |
| 686 |
|
if (rg == RG_CENT) { |
| 687 |
< |
if (!(1L<<i & gmtflags) || (x+y)&07) |
| 687 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) { |
| 688 |
|
copycolor(scan[x], mbRGB[i]); |
| 689 |
< |
else |
| 689 |
> |
clipgamut(scan[x], bright(scan[x]), |
| 690 |
> |
CGAMUT, colmin, colmax); |
| 691 |
> |
} else |
| 692 |
|
copycolor(scan[x], blkcol); |
| 693 |
|
} else if (rg == RG_CORR) |
| 694 |
|
cvtcolor(scan[x], scan[x]); |
| 703 |
|
} |
| 704 |
|
/* clean up */ |
| 705 |
|
fclose(debugfp); |
| 706 |
< |
free((char *)scan); |
| 706 |
> |
free((void *)scan); |
| 707 |
|
} |
| 708 |
|
|
| 709 |
|
|
| 712 |
|
static COLR blkclr = BLKCOLR; |
| 713 |
|
COLR mbclr[24], cvclr[24], orclr[24]; |
| 714 |
|
COLR *scan; |
| 715 |
< |
COLOR ctmp; |
| 715 |
> |
COLOR ctmp, ct2; |
| 716 |
|
int y, i; |
| 717 |
|
register int x, rg; |
| 718 |
|
/* convert colors */ |
| 719 |
|
for (i = 0; i < 24; i++) { |
| 720 |
< |
setcolr(mbclr[i], colval(mbRGB[i],RED), |
| 721 |
< |
colval(mbRGB[i],GRN), colval(mbRGB[i],BLU)); |
| 720 |
> |
copycolor(ctmp, mbRGB[i]); |
| 721 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
| 722 |
> |
setcolr(mbclr[i], colval(ctmp,RED), |
| 723 |
> |
colval(ctmp,GRN), colval(ctmp,BLU)); |
| 724 |
|
if (inpflags & 1L<<i) { |
| 725 |
< |
setcolr(orclr[i], colval(inpRGB[i],RED), |
| 726 |
< |
colval(inpRGB[i],GRN), |
| 727 |
< |
colval(inpRGB[i],BLU)); |
| 661 |
< |
cvtcolor(ctmp, inpRGB[i]); |
| 662 |
< |
setcolr(cvclr[i], colval(ctmp,RED), |
| 725 |
> |
copycolor(ctmp, inpRGB[i]); |
| 726 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
| 727 |
> |
setcolr(orclr[i], colval(ctmp,RED), |
| 728 |
|
colval(ctmp,GRN), colval(ctmp,BLU)); |
| 729 |
+ |
if (rawmap) |
| 730 |
+ |
copycolr(cvclr[i], mbclr[i]); |
| 731 |
+ |
else { |
| 732 |
+ |
bresp(ctmp, inpRGB[i]); |
| 733 |
+ |
colortrans(ct2, solmat, ctmp); |
| 734 |
+ |
clipgamut(ct2, bright(ct2), CGAMUT, |
| 735 |
+ |
cblack, cwhite); |
| 736 |
+ |
setcolr(cvclr[i], colval(ct2,RED), |
| 737 |
+ |
colval(ct2,GRN), |
| 738 |
+ |
colval(ct2,BLU)); |
| 739 |
+ |
} |
| 740 |
|
} |
| 741 |
|
} |
| 742 |
|
/* allocate scanline */ |
| 773 |
|
} |
| 774 |
|
/* clean up */ |
| 775 |
|
fclose(debugfp); |
| 776 |
< |
free((char *)scan); |
| 776 |
> |
free((void *)scan); |
| 777 |
> |
} |
| 778 |
> |
|
| 779 |
> |
|
| 780 |
> |
getpos(name, bnds, fp) /* get boundary position */ |
| 781 |
> |
char *name; |
| 782 |
> |
int bnds[2]; |
| 783 |
> |
FILE *fp; |
| 784 |
> |
{ |
| 785 |
> |
char buf[64]; |
| 786 |
> |
|
| 787 |
> |
fprintf(stderr, "\tSelect corner: %s\n", name); |
| 788 |
> |
if (fgets(buf, sizeof(buf), fp) == NULL || |
| 789 |
> |
sscanf(buf, "%d %d", &bnds[0], &bnds[1]) != 2) { |
| 790 |
> |
fprintf(stderr, "%s: read error from display process\n", |
| 791 |
> |
progname); |
| 792 |
> |
exit(1); |
| 793 |
> |
} |
| 794 |
> |
} |
| 795 |
> |
|
| 796 |
> |
|
| 797 |
> |
pickchartpos(pfn) /* display picture and pick chart location */ |
| 798 |
> |
char *pfn; |
| 799 |
> |
{ |
| 800 |
> |
char combuf[512]; |
| 801 |
> |
FILE *pfp; |
| 802 |
> |
|
| 803 |
> |
sprintf(combuf, DISPCOM, pfn); |
| 804 |
> |
if ((pfp = popen(combuf, "r")) == NULL) { |
| 805 |
> |
perror(combuf); |
| 806 |
> |
exit(1); |
| 807 |
> |
} |
| 808 |
> |
fputs("Use middle mouse button to select chart corners:\n", stderr); |
| 809 |
> |
getpos("upper left (dark skin)", bounds[0], pfp); |
| 810 |
> |
getpos("upper right (bluish green)", bounds[1], pfp); |
| 811 |
> |
getpos("lower left (white)", bounds[2], pfp); |
| 812 |
> |
getpos("lower right (black)", bounds[3], pfp); |
| 813 |
> |
fputs("Got it -- quit display program.\n", stderr); |
| 814 |
> |
pclose(pfp); |
| 815 |
|
} |
