opening.c

image processing including fourier,wavelet,segmentation etc.

/*--------------------------- Commande MegaWave -----------------------------*/
/* mwcommand
  name = {opening};
  version = {"2.1"};
  author = {"Lionel Moisan"};
  function = {"opening/closing of a cimage"};
  usage = {
     'i'->i          "if set, a closing is applied instead of an opening",
     's':s->s        "if set, the shape s is taken as structuring element",
     'r':[r=1.0]->r  "otherwise, a disc of radius r (default 1.0) is used",
     'n':[n=1]->n    "number of iterations (default: 1)",
     in->u           "input image",
     out<-v          "output image"
          };
*/

#include <stdio.h>
#include "mw.h"

extern Cimage erosion();


Cimage opening(u, v, r, s, n, i)
     Cimage u,v;
     float  *r;
     Curve  s;
     int    *n;
     char   *i;
{
  Cimage w;
  char   *ni;
  
  v = mw_change_cimage(v,u->nrow,u->ncol);
  w = mw_change_cimage(NULL,u->nrow,u->ncol);
  if (!v || !w) mwerror(FATAL,1,"Not enough memory.");
  
  erosion(u,w,r,s,n,i);
  erosion(w,v,r,s,n,(char *)(!i));
  
  mw_delete_cimage(w);
  
  return v;
}