/* ----------------------------------------------------------------------   canny.h   Header file for canedge.c   Modified from canedge.h by Baback Moghaddam (11/15/94)---------------------------------------------------------------------- */#define CANNY_SIGMA_DEF 1.0#define CANNY_PASSES_DEF 30#define CANNY_H_PERC_DEF 30.0#define CANNY_THR_FACTOR 0.5#define MAX_FILENAME_CHAR 500#define CUTOFF .001#define MAX_GAUSS 100#define WORKSIZE 1024#define HISTOGRAM_SIZE 10000#define MAGIC_SCALE_FACTOR 3.7#define v1 img_array[row][(col + 1)]      #define v2 img_array[(row - 1)][(col + 1)]#define v3 img_array[(row - 1)][col]#define v4 img_array[(row - 1)][(col - 1)]#define v5 img_array[row][(col - 1)]#define v6 img_array[(row + 1)][(col - 1)]#define v7 img_array[(row + 1)][col]#define v8 img_array[(row + 1)][(col + 1)]#define V  img_array[row][col]#define xd xdir[row][col]#define yd ydir[row][col]/* ---------------------- function prototypes ------------------- */void convert_1f_to_0f(float **in, float **out, int nrow, int ncol);void convert_0c_to_1uc(char **in, unsigned char **out,		       int nrow, int ncol);void convert_0f_to_1uc(float **in, unsigned char **out,		       int nrow, int ncol);void print_documentation(float s, float h, float l, int i);void parse_options(int argc, char *argv[], 		   float *s, float *h, float *l, int *i, 		   char *indir, char *line_outdir, char *mag_outdir);float convert(char i);float fconv(register float *x, register float *y, register int n);void scaler(float **f_array, int vert_size, int horiz_size);void magedges(float **imgarray, char **edgearray, int vert_size, int horiz_size);void threshold(float **mag, char **edges, 	  float hthreshold, float thresfactor, int passes, 	  char **low, char **wk_space,	  int vert_size, int horiz_size);void grow(char **r_array, char **chk_array, char **w_array,     int vert_size, int horiz_size);float find_thres(float **xdir, float **ydir, float percentile,		 float **h_val, int vert_size, int horiz_size);void gradmax(float **img_array, float **xdir, float **ydir, char **edges,	int vert_size, int horiz_size);void gsmooth(float **img_array, float sigma, int vert_size, int horiz_size);