fast.h

this is a software code for corner extraction

#ifndef FAST_H
#define FAST_H

typedef struct { int x, y; } xy; 
typedef unsigned char byte;

xy*  fast_nonmax(const byte* im, int xsize, int ysize, xy* corners, int numcorners, int barrier, int* numnx);
xy*  fast_corner_detect_9(const byte* im, int xsize, int ysize, int barrier, int* numcorners);
xy*  fast_corner_detect_10(const byte* im, int xsize, int ysize, int barrier, int* numcorners);
xy*  fast_corner_detect_11(const byte* im, int xsize, int ysize, int barrier, int* numcorners);
xy*  fast_corner_detect_12(const byte* im, int xsize, int ysize, int barrier, int* numcorners);
#endif