www.gusucode.com > 自己编写的一个基于matlab的图像压缩程序，有GUI界面，不能程度的压缩效果以及信噪比 > 自己编写的一个基于matlab的图像压缩程序，有GUI界面，不能程度的压缩效果以及信噪比/BP神经网络的图像压缩/GUI_2.m

    function varargout = GUI_2(varargin)
% GUI_2 M-file for GUI_2.fig
%      GUI_2, by itself, creates a new GUI_2 or raises the existing
%      singleton*.
%
%      H = GUI_2 returns the handle to a new GUI_2 or the handle to
%      the existing singleton*.
%
%      GUI_2('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in GUI_2.M with the given input arguments.
%
%      GUI_2('Property','Value',...) creates a new GUI_2 or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before GUI_2_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to GUI_2_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 GUI_2

% Last Modified by GUIDE v2.5 22-Apr-2011 15:28:32

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @GUI_2_OpeningFcn, ...
                   'gui_OutputFcn',  @GUI_2_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 GUI_2 is made visible.
function GUI_2_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 GUI_2 (see VARARGIN)

% Choose default command line output for GUI_2
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes GUI_2 wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = GUI_2_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 pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


global im
[filename,pathname]=...
    uigetfile({'*.*';'*.jpg';'*.bmp';'*.gif';'*.tif'},'');
if pathname == 0
    return;
end
str=[pathname filename];

im=imread(str);

axes(handles.axes1);

imshow(im);title('')

% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

clc
close all
close(gcf);

% --------------------------------------------------------------------
function uipanel1_SelectionChangeFcn(hObject, eventdata, handles)
% hObject    handle to uipanel1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)



% --- Executes on button press in kj4.
function kj4_Callback(hObject, eventdata, handles)
% hObject    handle to kj4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


global im
global I
global P
global I2
global i3
global II
global P_1
global T
global net
global Y_chonggou
global Ychonggou_ceshi
global YYchonggou_ceshi
global YYchonggou_ceshi1
global Ychonggou_ce
global current_Obj

global index

I=rgb2gray(im);
I=imresize(I,[128,128]);%128*128
P=[];%¨
for i=1:32
    for j=1:32
        I2=I((i-1)*4+1:i*4,(j-1)*4+1:j*4);%§§1024¨4*4¨
        i3=reshape(I2,16,1);%¨§§16*1¨
        II=double(i3);
        P_1=II/255;%[0,1]§§ì¨¨
        P=[P,P_1];%16*1024¨
    end
end
T=P;%¨

axes(handles.axes2); 
if index==1
        net=newff(minmax(P),[8,16],{'tansig','logsig'},'trainlm');%§§§   
    elseif index==2
        net=newff(minmax(P),[4,16],{'tansig','logsig'},'trainlm');
    elseif index==3
        net=newff(minmax(P),[2,16],{'tansig','logsig'},'trainlm');
end

%§bp8trainlm§§§{}   P270
net.trainParam.goal=0.01;%¨¨§¨¨§§¨¨§§
net.trainParam.epochs=500;
%§§
tic
net=train(net,P,T);%train§§
toc
%tic,toc¨ì§§
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%¨§§§§¨
Y_chonggou=sim(net,P);%sim§§
%
Ychonggou_ceshi=[];
for k=1:1024
    Ychonggou_ceshi1=reshape(Y_chonggou(:,k),4,4);
    Ychonggou_ceshi=[Ychonggou_ceshi,Ychonggou_ceshi1];
end
YYchonggou_ceshi=[];
for k=1:32
    YYchonggou_ceshi1=Ychonggou_ceshi(:,(k-1)*128+1:k*128);
    YYchonggou_ceshi=[YYchonggou_ceshi;YYchonggou_ceshi1];
end
Ychonggou_ce=uint8(YYchonggou_ceshi*255);
%YYchonggou_ceshi16*1024¨¨*255[0,1][0255]
%¨¨¨¨¨¨

imshow(Ychonggou_ce);title('¨');  


% --------------------------------------------------------------------
function uipanel2_SelectionChangeFcn(hObject, eventdata, handles)
% hObject    handle to uipanel2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)



global index
switch get(hObject,'Tag')   
    case 'kj1'
        index=1;
    case 'kj2'
        index=2;
    case 'kj3'
        index=3;
end







% --- Executes on button press in pushbutton7.
function pushbutton7_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton7 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global index
global I
global Ychonggou_ce
global Q
if index==1
    Q = 255;
[m,n]=size(I);
MSE1 = sum(sum((I-Ychonggou_ce).^2))/(m*n);
else if index==2
        Q = 255;
[m,n]=size(I);
MSE1 = sum(sum((I-Ychonggou_ce).^2))/(m*n);
else if index==3
        Q = 255;
[m,n]=size(I);
MSE1 = sum(sum((I-Ychonggou_ce).^2))/(m*n);
    end

set(handles.edit4,'string',num2str(10*log10(Q*Q/MSE1)));



% --- Executes on button press in pushbutton8.
function pushbutton8_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton8 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

global index
global I
global Ychonggou_ce
if index==1
    A1=sum(sum(I));
B1=abs(sum(sum(Ychonggou_ce-I)));
else if index==2
        A1=sum(sum(I));
B1=abs(sum(sum(Ychonggou_ce-I)));
else if index==3
       A1=sum(sum(I));
B1=abs(sum(sum(Ychonggou_ce-I)));
    end
    set(handles.edit3,'string',num2str(A1/B1));



function edit3_Callback(hObject, eventdata, handles)
% hObject    handle to edit3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit3 as text
%        str2double(get(hObject,'String')) returns contents of edit3 as a double


% --- Executes during object creation, after setting all properties.
function edit3_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit4_Callback(hObject, eventdata, handles)
% hObject    handle to edit4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit4 as text
%        str2double(get(hObject,'String')) returns contents of edit4 as a double


% --- Executes during object creation, after setting all properties.
function edit4_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end


% --- Executes during object creation, after setting all properties.
function uipanel2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to uipanel2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called




% --- Executes on button press in kj1.
function kj1_Callback(hObject, eventdata, handles)
% hObject    handle to kj1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of kj1


% --- Executes on button press in kj3.
function kj3_Callback(hObject, eventdata, handles)
% hObject    handle to kj3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of kj3