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function h=Gauss_Like(varargin) %varargin是函数传递变量 
%模仿高斯过滤函数 
%%%%%%%%%%%%%%% 
%使用命令如下% 
%>> h=gauss_cxyadd_(11,11); 
%高斯矩阵宽度 和 高斯矩阵系数sigma 
% 
%G(x,y)=exp(-(x.*x + y.*y)/(2*sigma*sigma))/(2*pai*sigma^2) 
% 
%  
%将Current Directory设定为m-file存储目录% 
 
%%%%%%%%%%%%%%%%%%%%m-file如下编写%%%%%%%%%%%%%%%%% 
 
 
    MatrixWide=[varargin{1},varargin{1}]; 
    sigma=varargin{2}; 
  %  MatrixWide=[3,3]; 
  %  sigma=0.5;  
 
    siz   = (MatrixWide-1)/2; 
    std   = sigma; 
      
    [x,y] = meshgrid(-siz(2):siz(2),-siz(1):siz(1)); 
    arg   = -(x.*x + y.*y)/(2*std*std); 
 
    h     = exp(arg); 
    h(h