shiyan2.m

均值滤波,加权滤波,中值滤波的MATLAB实例,用于图象及信号的处理

function varargout = shiyan2(varargin)
% SHIYAN2 M-file for shiyan2.fig
%      SHIYAN2, by itself, creates a new SHIYAN2 or raises the existing
%      singleton*.
%
%      H = SHIYAN2 returns the handle to a new SHIYAN2 or the handle to
%      the existing singleton*.
%
%      SHIYAN2('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in SHIYAN2.M with the given input arguments.
%
%      SHIYAN2('Property','Value',...) creates a new SHIYAN2 or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before shiyan2_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to shiyan2_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Copyright 2002-2003 The MathWorks, Inc.

% Edit the above text to modify the response to help shiyan2

% Last Modified by GUIDE v2.5 30-Nov-2007 23:08:49

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @shiyan2_OpeningFcn, ...
                   'gui_OutputFcn',  @shiyan2_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before shiyan2 is made visible.
function shiyan2_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to shiyan2 (see VARARGIN)

% Choose default command line output for shiyan2
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes shiyan2 wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = shiyan2_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes on button press in open_file1.
function open_file1_Callback(hObject, eventdata, handles)
% hObject    handle to open_file1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA
[file,path]=uigetfile('*.jpg;*.tif');
if isequal(file,0)
   disp('User selected Cancel')
else
  filename=fullfile(path,file);
end
picture=imread(filename);
[r,c]=size(picture);
axes(handles.huiduxianshi1)
set(handles.huiduxianshi1, 'Visible', 'off', 'Units', 'pixels' ,'XLim',[0 r],'yLim',[0 c]);
imshow(picture);
hold on;
%直方图显示程序
%picture1=picture+1;
A=zeros(1,256);
for i=1:r
    for j=1:c
        a=picture(i,j);
        if(a>257)
            a=256;
            A(1,a)=A(1,a)+1;
        elseif(a==0)
            a=1;
           A(1,a)=A(1,a)+1;
        else
            A(1,a)=A(1,a)+1;
        end
    end
end
axes(handles.zhifangtu1)
set(handles.zhifangtu1,'Visible', 'off','Units', 'pixels','XLim',[1 256]);
x=1:1:256;
y=A(1,x)/(r*c);
stem(x,y,'.');
hold off;

%直方图均衡化程序
g=zeros(r,c); 
d=255; 
result=0; 
x=zeros(1,256); 
%计算统计概率x(k) 
for k1=1:256 
 result=result+y(k1); 
 x(k1)=result; 
end 
%统计概率取整 
x=round(d*x);
for i1=1:r 
  for j1=1:c 
 g(i1,j1)=x(picture(i1,j1)+1); 
  end 
end 
G=uint8(g);
axes(handles.junheng1)
set(handles.junheng1,'Visible', 'off','Units', 'pixels','XLim',[0 r],'yLim',[0 c]);
imshow(G);
hold on;

% --- Executes on button press in open_file2.
function open_file2_Callback(hObject, eventdata, handles)
% hObject    handle to open_file2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
[file,path] = uigetfile('*.jpg;*.tif');
if isequal(file,0)
   disp('User selected Cancel')
else
  filename=fullfile(path,file);
end
picture=imread(filename);
[r,c]=size(picture);
axes(handles.huiduxianshi2)
set(handles.huiduxianshi2, 'Visible', 'off', 'Units', 'pixels' ,'XLim',[0 r],'yLim',[0 c]);
imshow(picture);
hold on;
%直方图显示程序
%picture1=picture+1;
A=zeros(1,256);
for i=1:r
    for j=1:c
        a=picture(i,j);
         if(a>257)
            a=256;
            A(1,a)=A(1,a)+1;
         elseif(a==0)
             a=1;
           A(1,a)=A(1,a)+1;
         else
              A(1,a)=A(1,a)+1; 
         end
    end
end
axes(handles.zhifangtu2)
set(handles.zhifangtu2,'Visible', 'off','Units', 'pixels','XLim',[1 256]);
x=1:1:256;
y=A(1,x)/(r*c);
stem(x,y,'.');
hold off;

%直方图均衡化程序
g=zeros(r,c); 
d=255; 
result=0; 
x=zeros(1,256); 
%计算统计概率x(k) 
for k1=1:256 
 result=result+y(k1); 
 x(k1)=result; 
end 
%统计概率取整 
x=round(d*x);
for i1=1:r 
  for j1=1:c 
 g(i1,j1)=x(picture(i1,j1)+1); 
  end 
end 
G=uint8(g);
axes(handles.junheng2)
set(handles.junheng2,'Visible', 'off','Units', 'pixels','XLim',[0 r],'yLim',[0 c]);
imshow(G);
hold on;