// on GPU side


// on CPU side
float * h_noyauConvof = new float[(2*r+1)*(2*r+1)] ;
for (int i=0; i<(2*r+1)*(2*r+1); i++)
  h_noyauConvof[i]= 1.0/((2*r+1)*(2*r+1)) ;

cudaMemcpyToSymbol( masque, h_noyauConvof, (2*r+1)*(2*r+1)*sizeof(float), 0) ;