| 1 |
/* Copyright (c) 1997 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* Condition Radiance picture for display/output |
| 9 |
*/ |
| 10 |
|
| 11 |
#include "pcond.h" |
| 12 |
|
| 13 |
|
| 14 |
#define LDMAX 100 /* default max. display luminance */ |
| 15 |
#define LDMINF 0.01 /* default min. display lum. factor */ |
| 16 |
|
| 17 |
int what2do = 0; /* desired adjustments */ |
| 18 |
|
| 19 |
double ldmax = LDMAX; /* maximum output luminance */ |
| 20 |
double ldmin = 0.; /* minimum output luminance */ |
| 21 |
double Bldmin, Bldmax; /* Bl(ldmin) and Bl(ldmax) */ |
| 22 |
|
| 23 |
char *progname; /* global argv[0] */ |
| 24 |
|
| 25 |
char *infn; /* input file name */ |
| 26 |
FILE *infp; /* input stream */ |
| 27 |
FILE *mapfp = NULL; /* tone-mapping function stream */ |
| 28 |
VIEW ourview = STDVIEW; /* picture view */ |
| 29 |
int gotview = 0; /* picture has view */ |
| 30 |
double pixaspect = 1.0; /* pixel aspect ratio */ |
| 31 |
RESOLU inpres; /* input picture resolution */ |
| 32 |
|
| 33 |
COLOR *fovimg; /* foveal (1 degree) averaged image */ |
| 34 |
short fvxr, fvyr; /* foveal image resolution */ |
| 35 |
float bwhist[HISTRES]; /* luminance histogram */ |
| 36 |
double histot; /* total count of histogram */ |
| 37 |
double bwmin, bwmax; /* histogram limits */ |
| 38 |
double bwavg; /* mean brightness */ |
| 39 |
|
| 40 |
double scalef = 0.; /* linear scaling factor */ |
| 41 |
|
| 42 |
|
| 43 |
main(argc, argv) |
| 44 |
int argc; |
| 45 |
char *argv[]; |
| 46 |
{ |
| 47 |
static RGBPRIMS outprimS; |
| 48 |
int i; |
| 49 |
#define bool(flg) switch (argv[i][2]) { \ |
| 50 |
case '\0': what2do ^= flg; break; \ |
| 51 |
case 'y': case 'Y': case 't': case 'T': \ |
| 52 |
case '+': case '1': what2do |= flg; break; \ |
| 53 |
case 'n': case 'N': case 'f': case 'F': \ |
| 54 |
case '-': case '0': what2do &= ~(flg); break; \ |
| 55 |
default: goto userr; } |
| 56 |
|
| 57 |
progname = argv[0]; |
| 58 |
|
| 59 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
| 60 |
switch (argv[i][1]) { |
| 61 |
case 'h': |
| 62 |
bool(DO_HUMAN); |
| 63 |
break; |
| 64 |
case 'a': |
| 65 |
bool(DO_ACUITY); |
| 66 |
break; |
| 67 |
case 'v': |
| 68 |
bool(DO_VEIL); |
| 69 |
break; |
| 70 |
case 's': |
| 71 |
bool(DO_HSENS); |
| 72 |
break; |
| 73 |
case 'c': |
| 74 |
bool(DO_COLOR); |
| 75 |
break; |
| 76 |
case 'w': |
| 77 |
bool(DO_CWEIGHT); |
| 78 |
break; |
| 79 |
case 'l': |
| 80 |
bool(DO_LINEAR); |
| 81 |
break; |
| 82 |
case 'p': |
| 83 |
if (i+8 >= argc) goto userr; |
| 84 |
outprimS[RED][CIEX] = atof(argv[++i]); |
| 85 |
outprimS[RED][CIEY] = atof(argv[++i]); |
| 86 |
outprimS[GRN][CIEX] = atof(argv[++i]); |
| 87 |
outprimS[GRN][CIEY] = atof(argv[++i]); |
| 88 |
outprimS[BLU][CIEX] = atof(argv[++i]); |
| 89 |
outprimS[BLU][CIEY] = atof(argv[++i]); |
| 90 |
outprimS[WHT][CIEX] = atof(argv[++i]); |
| 91 |
outprimS[WHT][CIEY] = atof(argv[++i]); |
| 92 |
outprims = outprimS; |
| 93 |
break; |
| 94 |
case 'e': |
| 95 |
if (i+1 >= argc) goto userr; |
| 96 |
scalef = atof(argv[++i]); |
| 97 |
if (argv[i][0] == '+' | argv[i][0] == '-') |
| 98 |
scalef = pow(2.0, scalef); |
| 99 |
what2do |= DO_LINEAR; |
| 100 |
break; |
| 101 |
case 'f': |
| 102 |
if (i+1 >= argc) goto userr; |
| 103 |
mbcalfile = argv[++i]; |
| 104 |
break; |
| 105 |
case 't': |
| 106 |
if (i+1 >= argc) goto userr; |
| 107 |
ldmax = atof(argv[++i]); |
| 108 |
if (ldmax <= FTINY) |
| 109 |
goto userr; |
| 110 |
break; |
| 111 |
case 'b': |
| 112 |
if (i+1 >= argc) goto userr; |
| 113 |
ldmin = atof(argv[++i]); |
| 114 |
break; |
| 115 |
case 'm': |
| 116 |
if (i+1 >= argc) goto userr; |
| 117 |
if ((mapfp = fopen(argv[++i], "w")) == NULL) { |
| 118 |
fprintf(stderr, |
| 119 |
"%s: cannot open for writing\n", |
| 120 |
argv[i]); |
| 121 |
exit(1); |
| 122 |
} |
| 123 |
break; |
| 124 |
default: |
| 125 |
goto userr; |
| 126 |
} |
| 127 |
if (mbcalfile != NULL & outprims != stdprims) { |
| 128 |
fprintf(stderr, "%s: only one of -p or -f option supported\n", |
| 129 |
progname); |
| 130 |
exit(1); |
| 131 |
} |
| 132 |
if (outprims == stdprims & inprims != stdprims) |
| 133 |
outprims = inprims; |
| 134 |
if (ldmin <= FTINY) |
| 135 |
ldmin = ldmax*LDMINF; |
| 136 |
else if (ldmin >= ldmax) { |
| 137 |
fprintf(stderr, "%s: Ldmin (%f) >= Ldmax (%f)!\n", progname, |
| 138 |
ldmin, ldmax); |
| 139 |
exit(1); |
| 140 |
} |
| 141 |
Bldmin = Bl(ldmin); |
| 142 |
Bldmax = Bl(ldmax); |
| 143 |
if (i >= argc || i+2 < argc) |
| 144 |
goto userr; |
| 145 |
if ((infp = fopen(infn=argv[i], "r")) == NULL) |
| 146 |
syserror(infn); |
| 147 |
if (i+2 == argc && freopen(argv[i+1], "w", stdout) == NULL) |
| 148 |
syserror(argv[i+1]); |
| 149 |
#ifdef MSDOS |
| 150 |
setmode(fileno(infp), O_BINARY); |
| 151 |
setmode(fileno(stdout), O_BINARY); |
| 152 |
#endif |
| 153 |
getahead(); /* load input header */ |
| 154 |
printargs(argc, argv, stdout); /* add to output header */ |
| 155 |
if (outprims != inprims) |
| 156 |
fputprims(outprims, stdout); |
| 157 |
mapimage(); /* map the picture */ |
| 158 |
if (mapfp != NULL) /* write out basic mapping */ |
| 159 |
putmapping(mapfp); |
| 160 |
exit(0); |
| 161 |
userr: |
| 162 |
fprintf(stderr, "Usage: %s [-{h|a|v|s|c|l|w}[+-]][-e ev][-p xr yr xg yg xb yb xw yw|-f mbf.cal][-t Ldmax][-b Ldmin][-m mapfile] inpic [outpic]\n", |
| 163 |
progname); |
| 164 |
exit(1); |
| 165 |
#undef bool |
| 166 |
} |
| 167 |
|
| 168 |
|
| 169 |
syserror(s) /* report system error and exit */ |
| 170 |
char *s; |
| 171 |
{ |
| 172 |
fprintf(stderr, "%s: ", progname); |
| 173 |
perror(s); |
| 174 |
exit(2); |
| 175 |
} |
| 176 |
|
| 177 |
|
| 178 |
headline(s) /* process header line */ |
| 179 |
char *s; |
| 180 |
{ |
| 181 |
static RGBPRIMS inprimS; |
| 182 |
char fmt[32]; |
| 183 |
|
| 184 |
if (formatval(fmt, s)) { /* check if format string */ |
| 185 |
if (!strcmp(fmt,COLRFMT)) lumf = rgblum; |
| 186 |
else if (!strcmp(fmt,CIEFMT)) lumf = cielum; |
| 187 |
else lumf = NULL; |
| 188 |
return; /* don't echo */ |
| 189 |
} |
| 190 |
if (isprims(s)) { /* get input primaries */ |
| 191 |
primsval(inprimS, s); |
| 192 |
inprims= inprimS; |
| 193 |
return; /* don't echo */ |
| 194 |
} |
| 195 |
if (isexpos(s)) { /* picture exposure */ |
| 196 |
inpexp *= exposval(s); |
| 197 |
return; /* don't echo */ |
| 198 |
} |
| 199 |
if (isaspect(s)) /* pixel aspect ratio */ |
| 200 |
pixaspect *= aspectval(s); |
| 201 |
if (isview(s)) /* image view */ |
| 202 |
gotview += sscanview(&ourview, s); |
| 203 |
fputs(s, stdout); |
| 204 |
} |
| 205 |
|
| 206 |
|
| 207 |
getahead() /* load picture header */ |
| 208 |
{ |
| 209 |
char *err; |
| 210 |
|
| 211 |
getheader(infp, headline, NULL); |
| 212 |
if (lumf == NULL || !fgetsresolu(&inpres, infp)) { |
| 213 |
fprintf(stderr, "%s: %s: not a Radiance picture\n", |
| 214 |
progname, infn); |
| 215 |
exit(1); |
| 216 |
} |
| 217 |
if (lumf == rgblum) |
| 218 |
comprgb2xyzmat(inrgb2xyz, inprims); |
| 219 |
else if (mbcalfile != NULL) { |
| 220 |
fprintf(stderr, "%s: macbethcal only works with RGB pictures\n", |
| 221 |
progname); |
| 222 |
exit(1); |
| 223 |
} |
| 224 |
if (!gotview || ourview.type == VT_PAR) { |
| 225 |
copystruct(&ourview, &stdview); |
| 226 |
ourview.type = VT_PER; |
| 227 |
if (pixaspect*inpres.yr < inpres.xr) { |
| 228 |
ourview.horiz = 40.0; |
| 229 |
ourview.vert = 2.*180./PI * |
| 230 |
atan(.3639702*pixaspect*inpres.yr/inpres.xr); |
| 231 |
} else { |
| 232 |
ourview.vert = 40.0; |
| 233 |
ourview.horiz = 2.*180./PI * |
| 234 |
atan(.3639702*inpres.xr/pixaspect/inpres.yr); |
| 235 |
} |
| 236 |
} |
| 237 |
if ((err = setview(&ourview)) != NULL) { |
| 238 |
fprintf(stderr, "%s: view error in picture \"%s\": %s\n", |
| 239 |
progname, infn, err); |
| 240 |
exit(1); |
| 241 |
} |
| 242 |
} |
| 243 |
|
| 244 |
|
| 245 |
mapimage() /* map picture and send to stdout */ |
| 246 |
{ |
| 247 |
COLOR *scan; |
| 248 |
|
| 249 |
#ifdef DEBUG |
| 250 |
fprintf(stderr, "%s: generating histogram...", progname); |
| 251 |
#endif |
| 252 |
getfovimg(); /* get foveal sample image */ |
| 253 |
comphist(); /* generate adaptation histogram */ |
| 254 |
#ifdef DEBUG |
| 255 |
fputs("done\n", stderr); |
| 256 |
#endif |
| 257 |
check2do(); /* modify what2do flags */ |
| 258 |
if (what2do&DO_VEIL) { |
| 259 |
#ifdef DEBUG |
| 260 |
fprintf(stderr, "%s: computing veiling...", progname); |
| 261 |
#endif |
| 262 |
compveil(); |
| 263 |
#ifdef DEBUG |
| 264 |
fputs("done\n", stderr); |
| 265 |
#endif |
| 266 |
} |
| 267 |
#ifdef DEBUG |
| 268 |
fprintf(stderr, "%s: computing brightness mapping...", progname); |
| 269 |
#endif |
| 270 |
if (!(what2do&DO_LINEAR) && mkbrmap() < 0) { /* make tone map */ |
| 271 |
what2do |= DO_LINEAR; /* use linear scaling */ |
| 272 |
#ifdef DEBUG |
| 273 |
fputs("failed!\n", stderr); |
| 274 |
} else |
| 275 |
fputs("done\n", stderr); |
| 276 |
#else |
| 277 |
} |
| 278 |
#endif |
| 279 |
if (what2do&DO_LINEAR) { |
| 280 |
if (scalef <= FTINY) { |
| 281 |
if (what2do&DO_HSENS) |
| 282 |
scalef = htcontrs(Lb(0.5*(Bldmax+Bldmin))) / |
| 283 |
htcontrs(Lb(bwavg)); |
| 284 |
else |
| 285 |
scalef = Lb(0.5*(Bldmax+Bldmin)) / Lb(bwavg); |
| 286 |
scalef *= WHTEFFICACY/(inpexp*ldmax); |
| 287 |
} |
| 288 |
#ifdef DEBUG |
| 289 |
fprintf(stderr, "%s: linear scaling factor = %f\n", |
| 290 |
progname, scalef); |
| 291 |
#endif |
| 292 |
fputexpos(inpexp*scalef, stdout); /* record exposure */ |
| 293 |
if (lumf == cielum) scalef /= WHTEFFICACY; |
| 294 |
} |
| 295 |
putchar('\n'); /* complete header */ |
| 296 |
fputsresolu(&inpres, stdout); /* resolution doesn't change */ |
| 297 |
|
| 298 |
for (scan = firstscan(); scan != NULL; scan = nextscan()) |
| 299 |
if (fwritescan(scan, scanlen(&inpres), stdout) < 0) { |
| 300 |
fprintf(stderr, "%s: scanline write error\n", |
| 301 |
progname); |
| 302 |
exit(1); |
| 303 |
} |
| 304 |
} |
| 305 |
|
| 306 |
|
| 307 |
double |
| 308 |
centprob(x, y) /* center-weighting probability function */ |
| 309 |
int x, y; |
| 310 |
{ |
| 311 |
double xr, yr, p; |
| 312 |
/* paraboloid, 0 at 90 degrees from center */ |
| 313 |
xr = (x - .5*(fvxr-1))/90.; /* 180 degree fisheye has fv?r == 90 */ |
| 314 |
yr = (y - .5*(fvyr-1))/90.; |
| 315 |
p = 1. - xr*xr - yr*yr; |
| 316 |
return(p < 0. ? 0. : p); |
| 317 |
} |
| 318 |
|
| 319 |
|
| 320 |
getfovimg() /* load foveal sampled image */ |
| 321 |
{ |
| 322 |
extern FILE *popen(); |
| 323 |
char combuf[128]; |
| 324 |
FILE *fp; |
| 325 |
int x, y; |
| 326 |
/* compute image size */ |
| 327 |
fvxr = sqrt(ourview.hn2)/FOVDIA + 0.5; |
| 328 |
if (fvxr < 2) fvxr = 2; |
| 329 |
fvyr = sqrt(ourview.vn2)/FOVDIA + 0.5; |
| 330 |
if (fvyr < 2) fvyr = 2; |
| 331 |
if (!(inpres.or & YMAJOR)) { /* picture is rotated? */ |
| 332 |
y = fvyr; |
| 333 |
fvyr = fvxr; |
| 334 |
fvxr = y; |
| 335 |
} |
| 336 |
if ((fovimg = (COLOR *)malloc(fvxr*fvyr*sizeof(COLOR))) == NULL) |
| 337 |
syserror("malloc"); |
| 338 |
sprintf(combuf, "pfilt -1 -b -x %d -y %d %s", fvxr, fvyr, infn); |
| 339 |
if ((fp = popen(combuf, "r")) == NULL) |
| 340 |
syserror("popen"); |
| 341 |
getheader(fp, NULL, NULL); /* skip header */ |
| 342 |
if (fgetresolu(&x, &y, fp) < 0 || x != fvxr | y != fvyr) |
| 343 |
goto readerr; |
| 344 |
for (y = 0; y < fvyr; y++) |
| 345 |
if (freadscan(fovscan(y), fvxr, fp) < 0) |
| 346 |
goto readerr; |
| 347 |
pclose(fp); |
| 348 |
return; |
| 349 |
readerr: |
| 350 |
fprintf(stderr, "%s: error reading from pfilt process in fovimage\n", |
| 351 |
progname); |
| 352 |
exit(1); |
| 353 |
} |
| 354 |
|
| 355 |
|
| 356 |
comphist() /* create foveal sampled image and histogram */ |
| 357 |
{ |
| 358 |
double l, b, lwmin, lwmax; |
| 359 |
register int x, y; |
| 360 |
|
| 361 |
lwmin = 1e10; /* find extrema */ |
| 362 |
lwmax = 0.; |
| 363 |
for (y = 0; y < fvyr; y++) |
| 364 |
for (x = 0; x < fvxr; x++) { |
| 365 |
l = plum(fovscan(y)[x]); |
| 366 |
if (l < lwmin) lwmin = l; |
| 367 |
if (l > lwmax) lwmax = l; |
| 368 |
} |
| 369 |
lwmin -= FTINY; |
| 370 |
lwmax += FTINY; |
| 371 |
if (lwmin < LMIN) lwmin = LMIN; |
| 372 |
if (lwmax > LMAX) lwmax = LMAX; |
| 373 |
/* compute histogram */ |
| 374 |
bwmin = Bl(lwmin); |
| 375 |
bwmax = Bl(lwmax); |
| 376 |
bwavg = 0.; |
| 377 |
for (y = 0; y < fvyr; y++) |
| 378 |
for (x = 0; x < fvxr; x++) { |
| 379 |
l = plum(fovscan(y)[x]); |
| 380 |
if (l < lwmin) continue; |
| 381 |
if (l > lwmax) continue; |
| 382 |
b = Bl(l); |
| 383 |
bwavg += b; |
| 384 |
l = what2do&DO_CWEIGHT ? centprob(x,y) : 1.; |
| 385 |
bwhist[bwhi(b)] += l; |
| 386 |
histot += l; |
| 387 |
} |
| 388 |
bwavg /= histot; |
| 389 |
} |
| 390 |
|
| 391 |
|
| 392 |
check2do() /* check histogram to see what isn't worth doing */ |
| 393 |
{ |
| 394 |
double sum; |
| 395 |
double b, l; |
| 396 |
register int i; |
| 397 |
|
| 398 |
/* check for within display range */ |
| 399 |
l = Lb(bwmax)/Lb(bwmin); |
| 400 |
if (l <= ldmax/ldmin) |
| 401 |
what2do |= DO_LINEAR; |
| 402 |
/* determine if veiling significant */ |
| 403 |
if (l < 100.) /* heuristic */ |
| 404 |
what2do &= ~DO_VEIL; |
| 405 |
|
| 406 |
if (!(what2do & (DO_ACUITY|DO_COLOR))) |
| 407 |
return; |
| 408 |
/* find 5th percentile */ |
| 409 |
sum = histot*0.05; |
| 410 |
for (i = 0; i < HISTRES; i++) |
| 411 |
if ((sum -= bwhist[i]) <= 0) |
| 412 |
break; |
| 413 |
b = (i+.5)*(bwmax-bwmin)/HISTRES + bwmin; |
| 414 |
l = Lb(b); |
| 415 |
/* determine if acuity adj. useful */ |
| 416 |
if (what2do&DO_ACUITY && |
| 417 |
hacuity(l) >= (inpres.xr/sqrt(ourview.hn2) + |
| 418 |
inpres.yr/sqrt(ourview.vn2))/(2.*180./PI)) |
| 419 |
what2do &= ~DO_ACUITY; |
| 420 |
/* color sensitivity loss? */ |
| 421 |
if (l >= TopMesopic) |
| 422 |
what2do &= ~DO_COLOR; |
| 423 |
} |
