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greg |
2.2 |
/* RCSid: $Id: pfilt.h,v 2.1 2004/03/29 00:34:23 schorsch Exp $ */
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schorsch |
2.1 |
/*
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* Header file for picture filtering
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*/
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#ifndef _RAD_PFILT_H_
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#define _RAD_PFILT_H_
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greg |
2.2 |
#include "standard.h"
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#include "color.h"
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schorsch |
2.1 |
#ifdef __cplusplus
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extern "C" {
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#endif
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extern double CHECKRAD; /* radius over which gaussian is summed */
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extern double rad; /* output pixel radius for filtering */
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extern double thresh; /* maximum contribution for subpixel */
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extern int nrows, ncols; /* number of rows and columns for output */
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extern int xres, yres; /* x and y resolution */
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extern int avghot; /* true means average in avgbrt spots */
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extern double hotlvl; /* brightness considered "hot" */
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extern int npts; /* # of points for stars */
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extern double spread; /* spread for star points */
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extern char *progname;
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extern COLOR exposure; /* exposure for frame */
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extern double x_c, y_r; /* conversion factors */
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extern int xrad; /* x search radius */
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extern int yrad; /* y search radius */
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extern int xbrad; /* x box size */
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extern int ybrad; /* y box size */
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extern int barsize; /* size of input scan bar */
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extern COLOR **scanin; /* input scan bar */
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extern COLOR *scanout; /* output scan line */
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extern COLOR **scoutbar; /* output scan bar (if thresh > 0) */
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extern float **greybar; /* grey-averaged input values */
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extern int obarsize; /* size of output scan bar */
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extern int orad; /* output window radius */
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extern int wrapfilt; /* wrap filter horizontally? */
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typedef double brightfunc_t(COLOR c);
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extern brightfunc_t *ourbright; /* brightness calculation function */
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/* defined in pf2.c */
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extern void pass1init(void); /* prepare for first pass */
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extern void pass1default(void); /* for single pass */
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extern void pass1scan(COLOR *scan, int y); /* process first pass scanline */
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extern void pass2init(void); /* prepare for final pass */
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extern void pass2scan(COLOR *scan, int y); /* process final pass scanline */
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/* defined in pf3.c */
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extern void initmask(void); /* initialize gaussian lookup table */
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extern void dobox(COLOR csum, int xcent, int ycent,
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int c, int r); /* simple box filter */
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extern void dogauss(COLOR csum, int xcent, int ycent,
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int c, int r); /* gaussian filter */
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extern void dothresh(int xcent, int ycent,
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int ccent, int rcent); /* gaussian threshold filter */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RAD_PFILT_H_ */
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