Question

我想在matlab中使用按钮和面板创建一个gui。

要求：单击按钮后，对话框必须打开才能选择文件，在从该对话框中选择图像后，图像必须显示在gui的该面板上。

我该怎么做？

如何在gui面板上显示图像？

我目前的状况：

function pushbutton1_Callback(hObject, eventdata, handles)
[filename, pathname] = ...
uigetfile({'*.jpg';'*.png';'*.jpeg';'*.bmp';'*.*'},'File Selector');
set(handles.axes2, 'Visible','on'); 
imshow(IMG,'Parent',TheAxisHandleToDrawOn)
if isequal(filename,0)
   disp('Image upload Canceled')
end

我尝试了这个，但它没有用，怎么做？

Answer 1

对于callback，您首先read使用imread所选图片;您可以使用fullfile来构建完整的文件名。

然后使用imread返回的矩阵作为imshow函数的输入。

在评论后编辑

要在uipanel中显示图片，您必须在面板中添加axes，并在调用parent时将其用作imshow。

如果要显示的图像不在当前文件夹中或MATLAB路径中的文件夹中，则必须指定完整路径名（参考imread）。

在下文中，您可以找到我为测试构建的GUI的.m文件。

GUI包含：

axes（tag：axes2）
a uipanel（tag：uipanel1）
axes

uipanel

两个radiobuttons（tag：radiobutton1和radiobutton2）选择要显示图像的轴
两个statictext字段（标记：text2和text3）以显示所选图像的文件名
a pushbutton（tag：pushbutton1）选择要显示的图像
pushbutton（代码：按钮3），以便在选择imcontrast图片的情况下运行.dcm工具

该代码已在R2012b和2015b上进行了测试。

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

% Last Modified by GUIDE v2.5 25-Apr-2016 14:18:18

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

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

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = disp_fig_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)

% Select the image to be displayed
[filename, pathname] = ...
uigetfile({'*.jpg';'*.png';'*.jpeg';'*.bmp';'*.*'},'File Selector');
% Build the full filename
img_file=fullfile(pathname,filename)
% Split the filename to get its extension
[the_path,the_name,the_ext]=fileparts(img_file);
% Set the current StaticText uicontrol based on the selected RadioButton
curr_txt=handles.text2;
if(get(handles.radiobutton2,'value'))
   curr_txt=handles.text3;
end
% Check for image valid selection
if isequal(filename,0)
   disp('Image upload Canceled')
   set(curr_txt,'string','Image upload Canceled')
else
   % If an image has been selected
   set(curr_txt,'string',img_file)
   % If the image is a ".dcm"
   if(strcmp(the_ext,'.dcm'))
      % Read it with dicomread and enable the pushbutton to run the
      % IMCONTRAST tool
      IMG=dicomread(img_file);
      set(handles.pushbutton3,'visible','on')
   else
      % If the image is a ".jpg", ".bmp", ...
      % Read it with imread and disable the pushbutton to run the
      % IMCONTRAST tool
      IMG=imread(img_file);
      set(handles.pushbutton3,'visible','off')
   end
   % Identify the axes on which to display the image according to the
   % selected radiobutton
   if(get(handles.radiobutton1,'value'))
      the_parent=handles.axes2;
      set(handles.axes2, 'Visible','on'); 
   else
      the_parent=handles.axes_up;
   end
   % Showthe image
   imshow(IMG,'Parent',the_parent)
end


% --- Executes on button press in radiobutton1.
function radiobutton1_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton1 (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 radiobutton1

% If the first radiobutton has been selected, disable the second onre
r1=get(handles.radiobutton1,'value');
if(r1)
   set(handles.radiobutton2,'value',0);
end

% --- Executes on button press in radiobutton2.
function radiobutton2_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton2 (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 radiobutton2

% If the second radiobutton has been selected, disable the first one
r2=get(handles.radiobutton2,'value');
if(r2)
   set(handles.radiobutton1,'value',0);
end


% --- 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)

% Run the IMCONTRAST tool to the proper axes according to the selected
% radiobutton
r1=get(handles.radiobutton1,'value');
if(r1)
   imcontrast(handles.axes2)
else
   imcontrast(handles.axes_up)
end

GUI的结构

GUI ...正常工作

测试.dcm图片显示我作为示例使用了来自DICOM sample image sets的图片。

希望这有帮助。

Qapla'

Answer 2

this is the final solution for the problem

function browse_Callback（hObject，eventdata，handles）％hObject要浏览的句柄（参见GCBO）保留％eventdata - 将在MATLAB的未来版本中定义％处理带句柄和用户数据的结构（请参阅GUIDATA） [filename，pathname] = uigetfile（{＆＃39; .jpg＆＃39;;＆＃39; .gif＆＃39;;＆＃39; .png＆＃39;;＆＃39; .bmp＆＃39;}，＆＃39;选择文件＆＃39;）; MyImage = strcat（pathname，filename）; ％此代码检查用户是否在对话框上按下取消。 if isequal（filename，0）|| ISEQUAL（路径名，0） uiwait（msgbox（＆＃39;用户按下取消＆＃39;，＆＃39;失败＆＃39;，＆＃39;模态＆＃39;））坚持，稍等; 其他 uiwait（msgbox（＆＃39;用户选择的图像成功＆＃39;，＆＃39;成功＆＃39;，＆＃39;模态＆＃39;））; 推迟; imshow（MYIMAGE，＆＃39;父＆＃39;，handles.axes1）; 结束全局图像变量; Imagevariable = MYIMAGE; handles.output = hObject; guidata（hObject，handles）;

在matlab中创建一个gui

2 个答案: