matlab图像去噪程序

function varargout = jiemian(varargin) %返回从函数jiemian.m中得到的参数中变量的数目;传递一个参数中变量的数目给函数jiemian.m。

% JIEMIAN Application M-file for jiemian.fig% FIG = JIEMIAN launch jiemian GUI.% JIEMIAN('callback_name', ...) invoke the named callback.% Last Modified by shijiawei v2.5 24-May-2014 02:45:18if nargin == 0 % LAUNCH GUI %nargin 显示输入变量fig = openfig(mfilename,'reuse'); %打开包含在FIG文件filename.fig中的图形,确保它是可见的并且完全定位在屏幕上。

% Generate a structure of handles to pass to callbacks, and store it.handles = guihandles(fig); %返回一个结构,它包含图像中对象的句柄guidata(fig, handles); %将变量handles存储到fig文件中if nargout > 0 %如果输出变量大于0varargout{1} = fig; %返回figendelseif ischar(varargin{1}) % INVOKE NAMED SUBFUNCTION OR CALLBACK %如果varargin{1}是一个字符数组则返回逻辑真(1),否则返回逻辑假(0)。

tryif (nargout) %显示用户提供的输出变量的个数[varargout{1:nargout}] = feval(varargin{:}); % FEVAL switchyard %varargout传递参数中的变量数目elsefeval(varargin{:}); % FEVAL switchyard %**feval函数的求值endcatch %如果出错开始执行catch块disp(lasterr); %%%% lasterr函数查询出错原因。

如果函数lasterr的运行结果为一个空串，则表明组命令1被成功执行了%%%% disp 显示矩阵和文字内容endend%| ABOUT CALLBACKS:%| GUIDE automatically appends subfunction prototypes to this file, and%| sets objects' callback properties to call them through the FEVAL%| switchyard above. This comment describes that mechanism.%|%| Each callback subfunction declaration has the following form:%| <SUBFUNCTION_NAME>(H, EVENTDATA, HANDLES, VARARGIN)%|%| The subfunction name is composed using the object's Tag and the%| callback type separated by '_', e.g. 'slider2_Callback',%| 'figure1_CloseRequestFcn', 'axis1_ButtondownFcn'.%|%| H is the callback object's handle (obtained using GCBO).%|%| EVENTDATA is empty, but reserved for future use.%|%| HANDLES is a structure containing handles of components in GUI using%| tags as fieldnames, e.g. handles.figure1, handles.slider2. This%| structure is created at GUI startup using GUIHANDLES and stored in%| the figure's application data using GUIDATA. A copy of the structure%| is passed to each callback. You can store additional information in%| this structure at GUI startup, and you can change the structure%| during callbacks. Call guidata(h, handles) after changing your%| copy to replace the stored original so that subsequent callbacks see%| the updates. Type "help guihandles" and "help guidata" for more%| information.%|%| VARARGIN contains any extra arguments you have passed to the%| callback. Specify the extra arguments by editing the callback%| property in the inspector. By default, GUIDE sets the property to:%| <MFILENAME>('<SUBFUNCTION_NAME>', gcbo, [], guidata(gcbo))%| Add any extra arguments after the last argument, before the final%| closing parenthesis.% --------------------------------------------------------------------function varargout = LoadPush_Callback(h, eventdata, handles, varargin)%回调函数%返回从函数()中得到的参数中变量的数目。

global im_original im_noised im_filtered%global:定义全局变量%原始图像，噪声图像，去噪图像[filename, pathname] = uigetfile('*.bmp;*.pgm;*.tif;*.jpg;*.*', 'Load input image');%读取文件if isequal(filename,0) | isequal(pathname,0) %确定数组是否数值相等,如果输入数组具有相同的维数、相同的类型并且具有相同的内容则返回逻辑真(1),否则返回逻辑假(0)。

disp('User pressed cancel')%disp：显示elsedisp(['User selected ', fullfile(pathname, filename)]) %显示用户选项，显示路径名称和文件文件endim_original=imread(filename); %从图形文件中读取图像。

set(handles.Or_image,'HandleVisibility','OFF');%handles:句柄axes[坐标]的句柄不可见%注释掉影响不大set(handles.Out_image,'HandleVisibility','OFF'); %注释掉影响不大%set(handles.Denoised_image,'HandleVisibility','OFF');set(handles.Or_image,'HandleVisibility','ON'); %注释掉影响不大axes(handles.Or_image); %设置现有轴handles.Or_image为当前轴。

imshow(im_original); %显示原始图像colormap(gray(256)); %将当前的颜色图设置为256灰度axis equal;%让图像的大小与框架吻合axis tight;%同上axis off;%把数轴关掉set(handles.Or_image,'HandleVisibility','OFF');%axes handles:句柄不可见set(handles.Or_image,'XTickLabel',' ','YTickLabel',' '); %xtick是刻度（小竖线）；xticklabel 刻度值（竖线下面的数值）。

% --------------------------------------------------------------------function varargout = popupmenu1_Callback(h, eventdata, handles, varargin) %【Add Noise】下拉菜单% --------------------------------------------------------------------function varargout = popupmenu3_Callback(h, eventdata, handles, varargin) %【Method】下拉菜单% --------------------------------------------------------------------function varargout = ApplyPush_Callback(h, eventdata, handles, varargin) %【apply】按钮global im_original im_noised im_filtered %定义全局变量imnoise_type = get(handles.popupmenu1,'Value'); % selected noise typeswitch imnoise_type %切换噪声类型case { 1 } %加入噪声im_noised = gaussian_bai(im_original); %加入高斯白噪声case { 2 }im_noised = salt(uint8(im_original)); %加入椒盐噪声case { 3 }im_noised = speckle(uint8(im_original)); %加入乘性噪声case { 4 }im_noised = poisson(im_original); %加入泊松噪声endmethod_number = get(handles.popupmenu3,'Value'); % selected filter methodswitch method_numbercase { 1 }im_filtered = meanfilter(im_noised);%执行二维的均值滤波case { 2 }im_filtered = medfilter3(im_noised);%执行二维的中值滤波case { 3 }im_filtered = medfilter5(im_noised);%执行5*5窗口二维的中值滤波case { 4 }im_filtered = medfilter7(im_noised); %执行7*7窗口二维的中值滤波case { 5 }im_filtered = wienerfilter(im_noised);%执行二维的维纳滤波case { 6 }endset(handles.noised_image,'HandleVisibility','ON'); %axes[坐标]的句柄可见axes(handles.noised_image); %设置现有轴handles.noised_image为当前轴。