图像压缩图像无损压缩含Matlab源码.zip

function varargout = ImageCompression1(varargin) % IMAGECOMPRESSION1 MATLAB code for ImageCompression1.fig % IMAGECOMPRESSION1, by itself, creates a new IMAGECOMPRESSION1 or raises the existing % singleton*. % % H = IMAGECOMPRESSION1 returns the handle to a new IMAGECOMPRESSION1 or the handle to % the existing singleton*. % % IMAGECOMPRESSION1('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in IMAGECOMPRESSION1.M with the given input arguments. % % IMAGECOMPRESSION1('Property','Value',...) creates a new IMAGECOMPRESSION1 or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before ImageCompression1_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to ImageCompression1_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 ImageCompression1 % Last Modified by GUIDE v2.5 15-Oct-2014 22:20:56 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @ImageCompression1_OpeningFcn, ... 'gui_OutputFcn', @ImageCompression1_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 ImageCompression1 is made visible. function ImageCompression1_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 ImageCompression1 (see VARARGIN) % Choose default command line output for ImageCompression1 handles.output = hObject; % Update handles structure guidata(hObject, handles); guidata(hObject, handles); set(handles.axes1,'visible','off') set(handles.axes2,'visible','off') axis off axis off % UIWAIT makes ImageCompression1 wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = ImageCompression1_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 file_name; %guidata(hObject,handles) file_name=uigetfile({'*.bmp;*.jpg;*.png;*.tiff;';'*.*'},'Select an Image File'); fileinfo = dir(file_name); SIZE = fileinfo.bytes; Size = SIZE/1024; set(handles.text7,'string',Size); imshow(file_name,'Parent', handles.axes1) % --- 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) % 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) global file_name; if(~ischar(file_name)) errordlg('Please select Images first'); else I1 = imread(file_name); % I1 = imread('chicken.jpg'); I = I1(:,:,1); I = im2double(I); T = dctmtx(8); B = blkproc(I,[8 8],'P1*x*P2',T,T'); mask = [1 1 1 1 0 0 0 0 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]; B2 = blkproc(B,[8 8],'P1.*x',mask); I2 = blkproc(B2,[8 8],'P1*x*P2',T',T); I = I1(:,:,2); I = im2double(I); T = dctmtx(8); B = blkproc(I,[8 8],'P1*x*P2',T,T'); mask = [1 1 1 1 0 0 0 0 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]; B2 = blkproc(B,[8 8],'P1.*x',mask); I3 = blkproc(B2,[8 8],'P1*x*P2',T',T); I = I1(:,:,3); I = im2double(I); T = dctmtx(8); B = blkproc(I,[8 8],'P1*x*P2',T,T'); mask = [1 1 1 1 0 0 0 0 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]; B2 = blkproc(B,[8 8],'P1.*x',mask); I4 = blkproc(B2,[8 8],'P1*x*P2',T',T); L(:,:,:)=cat(3,I2, I3, I4); imwrite(L,'CompressedColourImage.jpg'); fileinfo = dir('CompressedColourImage.jpg'); SIZE = fileinfo.bytes; Size = SIZE/1024; set(handles.text8,'string',Size); imshow(L,'Parent', handles.axes2) end