Codes HUFFMAN compression and decompression GUI

Question

Jean Marcellino 2016-8-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/300241-codes-huffman-compression-and-decompression-gui

回答： aimad oumansour 2022-11-12

can anyone tell me , or teach me about huffman compression and decompression in gui matlab , because i can't find it anywhere about turtorial to make coding about huffman compression or decompression. thanks , and forgive my bad english .

5 个评论
显示 3更早的评论隐藏 3更早的评论

Jean Marcellino 2016-9-7

sir i have made some coding in GUI Matlab but i have trouble i can't show the images at axes 2 and idk how to fit the images in axes

Jean Marcellino 2016-9-7

编辑：Walter Roberson 2016-9-7

在 MATLAB Online 中打开

function varargout = test(varargin)
% TEST MATLAB code for test.fig
%      TEST, by itself, creates a new TEST or raises the existing
%      singleton*.
%
%      H = TEST returns the handle to a new TEST or the handle to
%      the existing singleton*.
%
%      TEST('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in TEST.M with the given input arguments.
%
%      TEST('Property','Value',...) creates a new TEST or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before test_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to test_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
% Edit the above text to modify the response to help test
% Last Modified by GUIDE v2.5 20-Aug-2016 19:59:38
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @test_OpeningFcn, ...
                   'gui_OutputFcn',  @test_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 test is made visible.
function test_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 test (see VARARGIN)
% Choose default command line output for test
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes test wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = test_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)
[nama_file,nama_path] = uigetfile({'*.jpg','File Citra(*.jpg)';
'*.png','File PNG(*.png)';... 
'*.tif','File TIF(*.tif)';... 
'*.*','Semua File(*.*)'},...
'buka file citra asli');
if ~isequal(nama_file,0);
    handles.citra=imread(fullfile(nama_path,nama_file));
    red=handles.citra(:,:,1); %memisahkan warna merah dari image
    r=red.';
    green = handles.citra(:,:,2); % memisahkan warna hijau dari image
    g=green.'; 
    blue = handles.citra(:,:,3); % memisahkan warna biru dari image 
    b=blue.'; 
    gbr = cat (3,r,g,b); 
    isequal(handles.citra,gbr) 
    gbr=double(gbr); 
    [handles.baris handles.kolom handles.layer]=size(gbr); 
    handles.jum=handles.baris*handles.kolom*handles.layer; 
    handles.data=(reshape(gbr,1,handles.jum)); 
    handles.pjgasli=(length(handles.data))*8;
    guidata(hObject,handles); 
    axes(handles.axes1);
    imshow(handles.citra);
else 
        return;
end
% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
[nama_file_simpan, path_simpan]=uiputfile(... 
    {'*.huff','File kompres(*.huff)'},...
    'Menyimpan File Citra Hasil Kompresi JPEG'); 
tic
h = waitbar(0,'Harap Tunggu...');
for i=1:100,  
waitbar(i/100)  
end 
close(h)  
%kompresihuff 
[frek,nil]=hist(handles.data,unique(handles.data)); 
frek=frek/sum(frek); 
handles.dict = huffmandict(nil,frek); % Create the dictionary. 
hcode = huffmanenco(handles.data,handles.dict); 
if ~isequal(nama_file_simpan,0) 
shuff=strcat(path_simpan, nama_file_simpan); 
save (shuff,'hcode'); 
else 
return; 
end 
guidata(hObject,handles); 
pjghuff=length(hcode); 
ratio2=100-((pjghuff/handles.pjgasli)*100); 
t2=toc; 
set(handles.huf_rat,'String',ratio2); 
set(handles.huf_pro,'String',t2); 
set(handles.huff_size,'String',pjghuff);
% --- 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)
[nama_file_huff,nama_path_huff] = uigetfile(... 
{'*.huff','File kompres(*.huff)'},... 
'Buka File Huffman'); 
if ~isequal(nama_file_huff,0) 
hcode=importdata(fullfile(nama_path_huff, nama_file_huff)); 
else 
return; 
end  
tic
h = waitbar(0,'Harap Tunggu...');  
for i=1:100,  
waitbar(i/100)  
end 
close(h)
%kompresihuff decode 
dhsig = huffmandeco(hcode,handles.dict); % Decode the code. 
hsl=uint8(reshape(dhsig,handles.baris,handles.kolom,handles.layer)); 
red = hsl(:,:,1); % memisahkan warna merah dari image 
r=red.'; 
green = hsl(:,:,2); % memisahkan warna hijau dari image 
g=green.'; 
blue = hsl(:,:,3); % memisahkan warna biru dari image 
b=blue.'; 
hslhuff = cat (3,r,g,b); 
isequal(hsl,hslhuff) 
axes(handles.axes3); 
imshow(hslhuff);
guidata(hObject,handles); 
pjgdehuff=length(hslhuff); 
ratio3=100-((pjgdehuff/handles.pjgasli)*100); 
t3=toc; 
set(handles.dehuff_rat,'String',ratio3); 
set(handles.dehuff_pro,'String',t3); 
set(handles.dehuff_size,'String',pjgdehuff);