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/* Copyright (c) 1996 Regents of the University of California */ |
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/* SCCSid "$SunId$ LBL" */ |
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/* |
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* Header file for picture file conditioning. |
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*/ |
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#include "standard.h" |
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#include "color.h" |
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#include "view.h" |
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#include "resolu.h" |
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#define SWNORM 2.26 /* scotopic/photopic ratio for white */ |
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#define WHTSEFFICACY (SWNORM*WHTEFFICACY) |
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#define FOVDIA (1.0*PI/180.) /* foveal diameter (radians) */ |
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#define HISTRES 100 /* histogram resolution */ |
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#define LMIN 1e-4 /* minimum visible world luminance */ |
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#define LMAX 1e5 /* maximum visible world luminance */ |
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#define Bl(Lw) log(Lw) /* brightness function */ |
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#define Bl1(Lw) (1.0/(Lw)) /* first derivative of Bl(Lw) */ |
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#define Lb(Bw) exp(Bw) /* inverse of brightness function */ |
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#define Lb1(Bw) exp(Bw) /* first derivative of Lb(Bw) */ |
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/* Flags of what to do */ |
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#define DO_ACUITY 01 |
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#define DO_VEIL 02 |
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#define DO_HSENS 04 |
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#define DO_COLOR 010 |
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#define DO_CWEIGHT 020 |
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#define DO_LINEAR 040 |
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#define DO_HUMAN (DO_ACUITY|DO_VEIL|DO_HSENS|DO_COLOR) |
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extern int what2do; /* desired adjustments */ |
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extern double ldmax; /* maximum output luminance */ |
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extern double ldmin; /* minimum output luminance */ |
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extern double Bldmin, Bldmax; /* Bl(ldmin) and Bl(ldmax) */ |
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extern char *progname; /* global argv[0] */ |
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extern char *infn; /* input file name */ |
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extern FILE *infp; /* input stream */ |
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extern double rgblum(), cielum(); /* luminance functions */ |
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extern double (*lumf)(); /* input luminance function */ |
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extern double inpexp; /* input exposure value */ |
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#define plum(clr) ((*lumf)(clr,0)/inpexp) |
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#define slum(clr) ((*lumf)(clr,1)/inpexp) |
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extern COLOR *fovimg; /* foveal (1 degree) averaged image */ |
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extern short fvxr, fvyr; /* foveal image resolution */ |
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#define fovscan(y) (fovimg+(y)*fvxr) |
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extern int bwhist[HISTRES]; /* luminance histogram */ |
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extern long histot; /* total count of histogram */ |
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extern double bwmin, bwmax; /* histogram limits */ |
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extern double bwavg; /* mean brightness */ |
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#define lwhc(L) bwhc(Bl(L)) |
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#define bwhc(B) bwhist[(int)(HISTRES*((B)-bwmin)/(bwmax-bwmin))] |
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extern RGBPRIMP inprims; /* input primaries */ |
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extern COLORMAT inrgb2xyz; /* convert input RGB to XYZ */ |
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extern RGBPRIMP outprims; /* output primaries */ |
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extern double scalef; /* linear scaling factor */ |
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extern VIEW ourview; /* picture view */ |
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extern double pixaspect; /* pixel aspect ratio */ |
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extern RESOLU inpres; /* input picture resolution */ |
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extern char *mbcalfile; /* macbethcal mapping file */ |
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struct mbc { /* data structure for macbethcal conditioning */ |
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float xa[3][6], ya[3][6]; |
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COLORMAT cmat; |
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}; |
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extern double hacuity(); /* human acuity func. (cycles/deg.) */ |
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extern double htcontrs(); /* human contrast sens. func. */ |
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extern COLOR *firstscan(); /* first processed scanline */ |
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extern COLOR *nextscan(); /* next processed scanline */ |
