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/* RCSid: $Id: pfilt.h,v 2.2 2023/12/07 21:15:54 greg Exp $ */ |
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/* |
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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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|
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#include "standard.h" |
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#include "color.h" |
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|
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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|
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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 COLORV **scanin; /* input scan bar */ |
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extern COLORV *scanout; /* output scan line */ |
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extern COLORV **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(SCOLOR 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(COLORV *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(COLORV *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(SCOLOR csum, int xcent, int ycent, |
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int c, int r); /* simple box filter */ |
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extern void dogauss(SCOLOR 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_ */ |
