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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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/* SCCSid "$SunId$ SGI" */ |
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/* RCSid: $Id$ */ |
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/* |
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* Header file for picture file conditioning. |
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*/ |
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#ifndef _RAD_PCOND_H_ |
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#define _RAD_PCOND_H_ |
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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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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#ifndef ADJ_VEIL |
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#define ADJ_VEIL 0 /* adjust veil to preserve contrast? */ |
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#endif |
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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 FOVDIA (1.0*PI/180.0) /* foveal diameter (radians) */ |
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#define HISTRES 100 /* histogram resolution */ |
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#define MAXPREHIST 1024 /* maximum precomputed histogram */ |
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#define LMIN 1e-7 /* minimum visible world luminance */ |
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#define LMAX 1e5 /* maximum visible world luminance */ |
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#define DO_COLOR 010 |
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#define DO_CWEIGHT 020 |
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#define DO_FIXHIST 040 |
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#define DO_LINEAR 0100 |
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#define DO_PREHIST 0100 |
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#define DO_LINEAR 0200 |
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#define DO_HUMAN (DO_ACUITY|DO_VEIL|DO_HSENS|DO_COLOR) |
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#define ldmin (ldmax/lddyn) |
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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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extern int fvxr, fvyr; /* foveal image resolution */ |
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extern float *crfimg; /* contrast reduction factors */ |
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#define fovscan(y) (fovimg+(y)*fvxr) |
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#define crfscan(y) (crfimg+(y)*fvxr) |
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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 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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extern double hacuity(); /* human acuity func. (cycles/deg.) */ |
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extern double htcontrs(); /* human contrast sens. func. */ |
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extern double clampf(); /* histogram clamping function */ |
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extern double crfactor(); /* contrast reduction factor */ |
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extern COLOR *firstscan(); /* first processed scanline */ |
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extern COLOR *nextscan(); /* next processed scanline */ |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _RAD_PCOND_H_ */ |
