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/* Copyright (c) 1996 Regents of the University of California */ |
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/* Copyright (c) 1997 Regents of the University of California */ |
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/* SCCSid "$SunId$ LBL" */ |
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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 BotMesopic 5.62e-3 /* top of scotopic range */ |
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#define TopMesopic 5.62 /* bottom of photopic range */ |
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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 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_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_FIXHIST 040 |
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#define DO_LINEAR 0100 |
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#define DO_HUMAN (DO_ACUITY|DO_VEIL|DO_HSENS|DO_COLOR) |
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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 fixfrac; /* histogram share due to fixations */ |
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extern short (*fixlst)[2]; /* fixation history list */ |
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extern int nfixations; /* number of fixation points */ |
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extern float bwhist[HISTRES]; /* luminance histogram */ |
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extern double 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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#define bwhi(B) (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 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 char *cwarpfile; /* color warp mapping file */ |
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extern double hacuity(); /* human acuity func. (cycles/deg.) */ |
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extern double htcontrs(); /* human contrast sens. func. */ |
