| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: pcond.c,v 3.34 2025/06/03 21:31:51 greg Exp $"; |
| 3 |
#endif |
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/* |
| 5 |
* Condition Radiance picture for display/output |
| 6 |
* Added white-balance adjustment 10/01 (GW). |
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*/ |
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|
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#include "platform.h" |
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#include "pcond.h" |
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|
| 12 |
|
| 13 |
#define LDMAX 100 /* default max. display luminance */ |
| 14 |
#define LDDYN 100 /* default dynamic range */ |
| 15 |
|
| 16 |
int what2do = 0; /* desired adjustments */ |
| 17 |
|
| 18 |
double ldmax = LDMAX; /* maximum output luminance */ |
| 19 |
double lddyn = LDDYN; /* display dynamic range */ |
| 20 |
double Bldmin, Bldmax; /* Bl(ldmax/lddyn) and Bl(ldmax) */ |
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|
| 22 |
char *infn; /* input file name */ |
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FILE *infp; /* input stream */ |
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FILE *mapfp = NULL; /* tone-mapping function stream */ |
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VIEW ourview = STDVIEW; /* picture view */ |
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int gotview = 0; /* picture has view */ |
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double pixaspect = 1.0; /* pixel aspect ratio */ |
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double fixfrac = 0.; /* histogram share due to fixations */ |
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RESOLU inpres; /* input picture resolution */ |
| 30 |
|
| 31 |
COLOR *fovimg; /* foveal (1 degree) averaged image */ |
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int fvxr, fvyr; /* foveal image resolution */ |
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float *crfimg; /* contrast reduction factors */ |
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short (*fixlst)[2]; /* fixation history list */ |
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int nfixations; /* number of fixation points */ |
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double bwhist[HISTRES]; /* luminance histogram */ |
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double histot; /* total count of histogram */ |
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double bwmin, bwmax; /* histogram limits */ |
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double bwavg; /* mean brightness */ |
| 40 |
|
| 41 |
double scalef = 0.; /* linear scaling factor */ |
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|
| 43 |
static gethfunc headline; |
| 44 |
static void getahead(void); |
| 45 |
static void mapimage(void); |
| 46 |
static void getfovimg(void); |
| 47 |
static void check2do(void); |
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|
| 49 |
|
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|
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int |
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main( |
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int argc, |
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char *argv[] |
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) |
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{ |
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static RGBPRIMS outprimS; |
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int i; |
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#define check_bool(flg) switch (argv[i][2]) { \ |
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case '\0': what2do ^= flg; break; \ |
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case 'y': case 'Y': case 't': case 'T': \ |
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case '+': case '1': what2do |= flg; break; \ |
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case 'n': case 'N': case 'f': case 'F': \ |
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case '-': case '0': what2do &= ~(flg); break; \ |
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default: goto userr; } |
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|
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fixargv0(argv[0]); /* sets global progname */ |
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|
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
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switch (argv[i][1]) { |
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case 'h': |
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check_bool(DO_HUMAN); |
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break; |
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case 'a': |
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check_bool(DO_ACUITY); |
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break; |
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case 'v': |
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check_bool(DO_VEIL); |
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break; |
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case 's': |
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check_bool(DO_HSENS); |
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break; |
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case 'c': |
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check_bool(DO_COLOR); |
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break; |
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case 'w': |
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check_bool(DO_CWEIGHT); |
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break; |
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case 'i': |
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if (i+1 >= argc) goto userr; |
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fixfrac = atof(argv[++i]); |
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if (fixfrac > FTINY) what2do |= DO_FIXHIST; |
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else what2do &= ~DO_FIXHIST; |
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break; |
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case 'I': |
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check_bool(DO_PREHIST); |
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break; |
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case 'l': |
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check_bool(DO_LINEAR); |
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break; |
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case 'p': |
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if (i+8 >= argc) goto userr; |
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outprimS[RED][CIEX] = atof(argv[++i]); |
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outprimS[RED][CIEY] = atof(argv[++i]); |
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outprimS[GRN][CIEX] = atof(argv[++i]); |
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outprimS[GRN][CIEY] = atof(argv[++i]); |
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outprimS[BLU][CIEX] = atof(argv[++i]); |
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outprimS[BLU][CIEY] = atof(argv[++i]); |
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outprimS[WHT][CIEX] = atof(argv[++i]); |
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outprimS[WHT][CIEY] = atof(argv[++i]); |
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outprims = outprimS; |
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break; |
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case 'e': |
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if (i+1 >= argc) goto userr; |
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scalef = atof(argv[++i]); |
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if ((argv[i][0] == '+') | (argv[i][0] == '-')) |
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scalef = pow(2.0, scalef); |
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what2do |= DO_LINEAR; |
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break; |
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case 'f': |
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if (i+1 >= argc) goto userr; |
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mbcalfile = argv[++i]; |
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break; |
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case 'm': |
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if (i+1 >= argc) goto userr; |
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cwarpfile = argv[++i]; |
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break; |
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case 'u': |
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if (i+1 >= argc) goto userr; |
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ldmax = atof(argv[++i]); |
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if (ldmax <= FTINY) |
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goto userr; |
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break; |
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case 'd': |
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if (i+1 >= argc) goto userr; |
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lddyn = atof(argv[++i]); |
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break; |
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case 'x': |
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if (i+1 >= argc) goto userr; |
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if ((mapfp = fopen(argv[++i], "w")) == NULL) { |
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fprintf(stderr, |
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"%s: cannot open for writing\n", |
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argv[i]); |
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exit(1); |
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} |
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break; |
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default: |
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goto userr; |
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} |
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if ((what2do & (DO_FIXHIST|DO_PREHIST)) == (DO_FIXHIST|DO_PREHIST)) { |
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fprintf(stderr, "%s: only one of -i or -I option\n", progname); |
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exit(1); |
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} |
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if ((mbcalfile != NULL) + (cwarpfile != NULL) + |
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(outprims != stdprims) > 1) { |
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fprintf(stderr, |
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"%s: only one of -p, -m or -f option supported\n", |
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progname); |
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exit(1); |
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} |
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if ((outprims == stdprims) & (inprims != stdprims)) |
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outprims = inprims; |
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Bldmin = Bl(ldmax/lddyn); |
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Bldmax = Bl(ldmax); |
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if (i >= argc || i+2 < argc) |
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goto userr; |
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/* open input file */ |
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if ((infp = fopen(infn=argv[i], "r")) == NULL) |
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syserror(infn); |
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/* open output file */ |
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if (i+2 == argc && freopen(argv[i+1], "w", stdout) == NULL) |
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syserror(argv[i+1]); |
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SET_FILE_BINARY(infp); |
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SET_FILE_BINARY(stdout); |
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getahead(); /* load input header */ |
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printargs(argc, argv, stdout); /* add to output header */ |
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if ((mbcalfile == NULL) & (outprims != stdprims)) |
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fputprims(outprims, stdout); |
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if ((what2do & (DO_PREHIST|DO_VEIL|DO_ACUITY)) != DO_PREHIST) |
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getfovimg(); /* get foveal sample image? */ |
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if (what2do&DO_PREHIST) /* get histogram? */ |
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gethisto(stdin); |
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else if (what2do&DO_FIXHIST) /* get fixation history? */ |
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getfixations(stdin); |
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mapimage(); /* map the picture */ |
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if (mapfp != NULL) /* write out basic mapping */ |
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putmapping(mapfp); |
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exit(0); |
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userr: |
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fprintf(stderr, "Usage: %s [-{h|a|v|s|c|l|w}[+-]][-I|-i ffrac][-e ev][-p xr yr xg yg xb yb xw yw|-f mbf.cal|-m rgb.cwp][-u Ldmax][-d Lddyn][-x mapfile] inpic [outpic]\n", |
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progname); |
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exit(1); |
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return 1; /* pro forma return */ |
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#undef check_bool |
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} |
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|
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|
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void |
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syserror( /* report system error and exit */ |
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char *s |
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) |
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{ |
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fprintf(stderr, "%s: ", progname); |
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perror(s); |
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exit(2); |
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} |
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|
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|
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static int |
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headline( /* process header line */ |
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char *s, |
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void *p |
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) |
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{ |
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static RGBPRIMS inprimS; |
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char fmt[MAXFMTLEN]; |
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|
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if (formatval(fmt, s)) { /* check if format string */ |
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if (!strcmp(fmt,COLRFMT) || !strcmp(fmt,SPECFMT)) |
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lumf = rgblum; |
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else if (!strcmp(fmt,CIEFMT)) |
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lumf = cielum; |
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else |
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lumf = NULL; |
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return(0); /* don't echo */ |
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} |
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if (isncomp(s)) { |
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NCSAMP = ncompval(s); |
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return(0); |
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} |
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if (iswlsplit(s)) { |
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wlsplitval(WLPART, s); |
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return(0); |
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} |
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/* get input primaries */ |
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if (isprims(s) && primsval(inprimS, s)) { |
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inprims = inprimS; |
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return(0); /* don't echo */ |
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} |
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if (isexpos(s)) { /* picture exposure */ |
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inpexp *= exposval(s); |
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return(0); /* don't echo */ |
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} |
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if (isaspect(s)) /* pixel aspect ratio */ |
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pixaspect *= aspectval(s); |
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if (isview(s)) /* image view */ |
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gotview += sscanview(&ourview, s); |
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return(fputs(s, stdout)); |
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} |
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|
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|
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static void |
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getahead(void) /* load picture header */ |
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{ |
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char *err; |
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|
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getheader(infp, headline, NULL); |
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if (lumf == NULL || !fgetsresolu(&inpres, infp)) { |
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fprintf(stderr, "%s: %s: not a Radiance picture\n", |
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progname, infn); |
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exit(1); |
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} |
| 263 |
if (lumf == rgblum) |
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comprgb2xyzWBmat(inrgb2xyz, inprims); |
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else if (mbcalfile != NULL) { |
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fprintf(stderr, "%s: macbethcal only works with RGB pictures\n", |
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progname); |
| 268 |
exit(1); |
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} |
| 270 |
if (!gotview || ourview.type == VT_PAR || |
| 271 |
(ourview.horiz <= 5.) | (ourview.vert <= 5.)) { |
| 272 |
ourview = stdview; |
| 273 |
ourview.type = VT_PER; |
| 274 |
if (pixaspect*inpres.yr < inpres.xr) { |
| 275 |
ourview.horiz = 40.0; |
| 276 |
ourview.vert = 2.*180./PI * |
| 277 |
atan(.3639702*pixaspect*inpres.yr/inpres.xr); |
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} else { |
| 279 |
ourview.vert = 40.0; |
| 280 |
ourview.horiz = 2.*180./PI * |
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atan(.3639702*inpres.xr/pixaspect/inpres.yr); |
| 282 |
} |
| 283 |
} |
| 284 |
if ((err = setview(&ourview)) != NULL) { |
| 285 |
fprintf(stderr, "%s: view error in picture \"%s\": %s\n", |
| 286 |
progname, infn, err); |
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exit(1); |
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} |
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} |
| 290 |
|
| 291 |
|
| 292 |
static void |
| 293 |
mapimage(void) /* map picture and send to stdout */ |
| 294 |
{ |
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COLOR *scan; |
| 296 |
|
| 297 |
comphist(); /* generate adaptation histogram */ |
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check2do(); /* modify what2do flags */ |
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if (what2do&DO_VEIL) |
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compveil(); /* compute veil image */ |
| 301 |
if (!(what2do&DO_LINEAR)) |
| 302 |
if (mkbrmap() < 0) /* make tone map */ |
| 303 |
what2do |= DO_LINEAR; /* failed! -- use linear */ |
| 304 |
#if ADJ_VEIL |
| 305 |
else if (what2do&DO_VEIL) |
| 306 |
adjveil(); /* else adjust veil image */ |
| 307 |
#endif |
| 308 |
if (what2do&DO_LINEAR) { |
| 309 |
if (scalef <= FTINY) { |
| 310 |
if (what2do&DO_HSENS) |
| 311 |
scalef = htcontrs(Lb(0.5*(Bldmax+Bldmin))) / |
| 312 |
htcontrs(Lb(bwavg)); |
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else |
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scalef = Lb(0.5*(Bldmax+Bldmin)) / Lb(bwavg); |
| 315 |
scalef *= WHTEFFICACY/(inpexp*ldmax); |
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} |
| 317 |
fputexpos(inpexp*scalef, stdout); /* record exposure */ |
| 318 |
if (lumf == cielum) scalef /= WHTEFFICACY; |
| 319 |
} |
| 320 |
fputformat(COLRFMT, stdout); /* complete header */ |
| 321 |
putchar('\n'); |
| 322 |
fputsresolu(&inpres, stdout); /* resolution doesn't change */ |
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/* condition our image */ |
| 324 |
for (scan = firstscan(); scan != NULL; scan = nextscan()) |
| 325 |
if (fwritescan(scan, scanlen(&inpres), stdout) < 0) { |
| 326 |
fprintf(stderr, "%s: scanline write error\n", |
| 327 |
progname); |
| 328 |
exit(1); |
| 329 |
} |
| 330 |
} |
| 331 |
|
| 332 |
|
| 333 |
static void |
| 334 |
getfovimg(void) /* load foveal sampled image */ |
| 335 |
{ |
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char combuf[PATH_MAX]; |
| 337 |
FILE *fp; |
| 338 |
int x, y; |
| 339 |
/* compute image size */ |
| 340 |
fvxr = sqrt(ourview.hn2)/FOVDIA + 0.5; |
| 341 |
if (fvxr < 2) fvxr = 2; |
| 342 |
fvyr = sqrt(ourview.vn2)/FOVDIA + 0.5; |
| 343 |
if (fvyr < 2) fvyr = 2; |
| 344 |
if (!(inpres.rt & YMAJOR)) { /* picture is rotated? */ |
| 345 |
y = fvyr; |
| 346 |
fvyr = fvxr; |
| 347 |
fvxr = y; |
| 348 |
} |
| 349 |
if ((fovimg = (COLOR *)malloc(fvxr*fvyr*sizeof(COLOR))) == NULL) |
| 350 |
syserror("malloc"); |
| 351 |
sprintf(combuf, "pfilt -1 -b -pa 0 -x %d -y %d \"%s\"", fvxr, fvyr, infn); |
| 352 |
if ((fp = popen(combuf, "r")) == NULL) |
| 353 |
syserror("popen"); |
| 354 |
SET_FILE_BINARY(fp); |
| 355 |
getheader(fp, NULL, NULL); /* skip header */ |
| 356 |
if (fgetresolu(&x, &y, fp) < 0 || (x != fvxr) | (y != fvyr)) |
| 357 |
goto readerr; |
| 358 |
for (y = 0; y < fvyr; y++) |
| 359 |
if (fread2scan(fovscan(y), fvxr, fp, NCSAMP, WLPART) < 0) |
| 360 |
goto readerr; |
| 361 |
pclose(fp); |
| 362 |
return; |
| 363 |
readerr: |
| 364 |
fprintf(stderr, "%s: error reading from pfilt process in fovimage\n", |
| 365 |
progname); |
| 366 |
exit(1); |
| 367 |
} |
| 368 |
|
| 369 |
|
| 370 |
static void |
| 371 |
check2do(void) /* check histogram to see what isn't worth doing */ |
| 372 |
{ |
| 373 |
double sum; |
| 374 |
double b, l; |
| 375 |
int i; |
| 376 |
|
| 377 |
/* check for within display range */ |
| 378 |
if (bwmax - bwmin <= Bldmax - Bldmin) |
| 379 |
what2do |= DO_LINEAR; |
| 380 |
/* determine if veiling significant */ |
| 381 |
if (bwmax - bwmin < 4.5) /* heuristic */ |
| 382 |
what2do &= ~DO_VEIL; |
| 383 |
|
| 384 |
if (!(what2do & (DO_ACUITY|DO_COLOR))) |
| 385 |
return; |
| 386 |
/* find 5th percentile */ |
| 387 |
sum = histot*0.05; |
| 388 |
for (i = 0; i < HISTRES; i++) |
| 389 |
if ((sum -= bwhist[i]) <= 0) |
| 390 |
break; |
| 391 |
b = (i+.5)*(bwmax-bwmin)/HISTRES + bwmin; |
| 392 |
l = Lb(b); |
| 393 |
/* determine if acuity adj. useful */ |
| 394 |
if (what2do&DO_ACUITY && |
| 395 |
hacuity(l) >= (inpres.xr/sqrt(ourview.hn2) + |
| 396 |
inpres.yr/sqrt(ourview.vn2))/(2.*180./PI)) |
| 397 |
what2do &= ~DO_ACUITY; |
| 398 |
/* color sensitivity loss? */ |
| 399 |
if (l >= TopMesopic) |
| 400 |
what2do &= ~DO_COLOR; |
| 401 |
} |
