fmean.c

来自「image processing including fourier,wavel」· C语言 代码 · 共 33 行

/*--------------------------- Commande MegaWave -----------------------------*/
/* mwcommand
name = {fmean};
author = {"Jacques Froment"};
function = {"Compute the mean gray level of an image"};
usage = {
A->A "input fimage",
m<-fmean "output mean gray level value"
};
version = {"1.0"};
*/

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

float fmean(A)

Fimage A;

{
  int s;
  register float *ptr;
  register int i;
  float m;

  m=0.0;
  s = A->ncol*A->nrow;
  for (i=0, ptr = A->gray;i<s;i++,ptr++) m += *ptr;
  m /= s;
      
  return(m);
}