d_bruiter.c
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	#include<stdio.h>
	#include<math.h>
	#include<fonction.h>
	#include<constant.h>
	#include<dimension.h>
	#include<structure.h>
	/* Append a Poisson noise to the pixels of image **z
	*/
	void d_bruiter(double **z, int nx, int ny)
	{
	extern struct g_observ O;

	int i, j;
	double res;


	for (i = 0; i < ny; i++)
	for (j = 0; j < nx; j++)
	{
	res = z[i][j];
	res = (res + O.SKY) * O.gain;
	res = floor(d_poisson(res, &O.idum) / O.gain);
	z[i][j] = res;
	}
	}