Displaying images with GUI in matlab

Question

REHANA M.B 2012-1-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/26183-displaying-images-with-gui-in-matlab

采纳的回答： Chandra Kurniawan

在 MATLAB Online 中打开

I have a code working for displaying dicom images..

i want to display these in GUI, with help of pushbutton

please help me..

thanks in advance!!

the code is

files = dir(fullfile('C:','Program Files','MATLAB','images\*.dcm'));
for i = 1 : numel(files)
[X, map] = dicomread(fullfile('C:','Program Files','MATLAB','images',files(i).name));
if ~isempty(map)
subplot(2,2,i);
subimage(X,map);
else
subplot(2,2,i);
imshow(X, map);
end
end

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Jan 2012-1-16

Please format your code as explained in the "Markup help" link on this page. What is your question?

REHANA M.B 2012-1-17

The code is as follows....

files = dir(fullfile('C:','Program Files','MATLAB','images\*.dcm'));

for i = 1 : numel(files)

[X, map] = dicomread(fullfile('C:','ProgramFiles','MATLAB','images',files(i).name));

if ~isempty(map)

subplot(2,2,i);

subimage(X,map);

else

subplot(2,2,i);

imshow(X, map);

end

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Answer 1

Chandra Kurniawan 2012-1-17

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/26183-displaying-images-with-gui-in-matlab#answer_34331

在 MATLAB Online 中打开

Hi,

You asked me 'what about for huge number of images in a folder??'

I think of course we cannot create so many axes in this figure,

so I decided to display them in single axes.

Just use button 'back' and 'next' to display your next or previous image.

Here the code :

function varargout = untitled(varargin)
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @untitled_OpeningFcn, ...
                   'gui_OutputFcn',  @untitled_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
function untitled_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;
handles.files = dir(fullfile('C:','Program Files','MATLAB','images\*.dcm'));
for i = 1 : length(handles.files)
    handles.X{i} = dicomread(fullfile('C:','Program Files','MATLAB','images',handles.files(i).name));   
end
imshow(handles.X{1},[]);
handles.index = 1;
Cek(hObject, eventdata, handles);
guidata(hObject, handles);
function varargout = untitled_OutputFcn(hObject, eventdata, handles) 
varargout{1} = handles.output;
function pushbutton1_Callback(hObject, eventdata, handles)
handles.output = hObject;
handles.index = handles.index - 1;
Cek(hObject, eventdata, handles);
imshow(handles.X{handles.index},[]);
guidata(hObject, handles);
function pushbutton2_Callback(hObject, eventdata, handles)
handles.output = hObject;
handles.index = handles.index + 1;
Cek(hObject, eventdata, handles);
imshow(handles.X{handles.index},[]);
guidata(hObject, handles);
function Cek(hObject, eventdata, handles)
handles.output = hObject;
n = length(handles.files);
if handles.index > 1,  set(handles.pushbutton1,'enable','on');
else                           set(handles.pushbutton1,'enable','off'); end
if handles.index < n, set(handles.pushbutton2,'enable','on');
else                           set(handles.pushbutton2,'enable','off'); end
guidata(hObject, handles);

Please design the correct GUI as shown in the picture.

the tag for axes is axes1, tag for 'back' button is pushbutton1, tag for 'next' button is pushbutton2.

If you design it correctly, I believe no error will occurs.

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REHANA M.B 2012-1-18

hi..

i tried for above 'BACK' and 'NEXT' button program

you have written for pushbutton1, pushbutton2.

i didnt understand what is "Cek"??

you had to write call back function for Axes1 right??

is "Cek" is AXES1??

function varargout = Back_button(varargin)

gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ...

'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @Back_button_OpeningFcn, ...

'gui_OutputFcn', @Back_button_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

function Back_button_OpeningFcn(hObject, eventdata, handles, varargin)

handles.output = hObject;

handles.files = dir(fullfile('C:','Program Files','MATLAB','images\*.dcm'));

for i = 1 : length(handles.files)

handles.X{i} = dicomread(fullfile('C:','Program Files','MATLAB','images',handles.files(i).name));

end

imshow(handles.X{1},[]);

handles.index = 1;

Cek(hObject, eventdata, handles);

guidata(hObject, handles);

function varargout = Back_button_OutputFcn(hObject, eventdata, handles)

varargout{1} = handles.output;

function axes1_CreateFcn(hObject, eventdata, handles)

handles.output = hObject;

n = length(handles.files);

if handles.index > 1, set(handles.pushbutton1,'enable','on');

else set(handles.pushbutton1,'enable','off'); end

if handles.index < n, set(handles.pushbutton2,'enable','on');

else set(handles.pushbutton2,'enable','off'); end

guidata(hObject, handles);

function pushbutton1_Callback(hObject, eventdata, handles)

handles.output = hObject;

handles.index = handles.index - 1;

Cek(hObject, eventdata, handles);

imshow(handles.X{handles.index},[]);

guidata(hObject, handles);

function pushbutton2_Callback(hObject, eventdata, handles)

handles.output = hObject;

handles.index = handles.index + 1;

Cek(hObject, eventdata, handles);

imshow(handles.X{handles.index},[]);

guidata(hObject, handles);

REHANA M.B 2012-1-18

Hi.... we can display 'n' number of images .. no need to take AXES.

we can take additional 'figure' means frame in GUI and give the path name to display on that....

Think on this..and let me know

Mirco 2012-1-23

Hi,

I have a problem similar to REHANA M.B, so I tried your Code...like REHANA the only thing I changed is that I used imread instead of dicomread, because I wanted to display jpg-images.

As a matter of fact, when starting the GUI no image was displayed and when trying the next Button or the previous Button I got the message :

"??? Reference to non-existent field 'index'.

Error in ==> disp_image>next_Callback at 36

handles.index = handles.index + 1;

Error in ==> gui_mainfcn at 96

feval(varargin{:});

Error in ==> disp_image at 11

else gui_mainfcn(gui_State, varargin{:}); end

Error in ==>

@(hObject,eventdata)disp_image('next_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback"

do you maybe have any suggestions what mistake i might have made? in case it matters, i used Matlab 7.10.0...thank you in advance :)

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Answer 2

Chandra Kurniawan 2012-1-16

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/26183-displaying-images-with-gui-in-matlab#answer_34209

在 MATLAB Online 中打开

Hi,

If you want to display it on the GUI, first you have to design the GUI.

Make a GUI with four axes, as shown in the image below :

Then add a pushbutton and write the callback

function pushbutton1_Callback(hObject, eventdata, handles)
handles.output = hObject;
files = dir(fullfile('C:','Program Files','MATLAB','images\*.dcm'));
hlist = {handles.axes1, handles.axes2, handles.axes3, handles.axes4};
for i = 1 : 4
    X = dicomread(fullfile('C:','Program Files','MATLAB','images',files(i).name));
    axes(hlist{i});
    imshow(X, []);     
end
guidata(hObject, handles);

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REHANA M.B 2012-1-17

Thank you..

but for every image we have to use axes? then what about for huge number of images in a folder??

can we display n number of images on a single axes??

REHANA M.B 2012-1-17

it is giving the error

??? Reference to non-existent field 'axes3'.

Error in ==> gui_new>pushbutton1_Callback at 83

hlist = {handles.axes1, handles.axes2, handles.axes3, handles.axes4};

Error in ==> gui_mainfcn at 96

feval(varargin{:});

Error in ==> gui_new at 42

gui_mainfcn(gui_State, varargin{:});

Error in ==> @(hObject,eventdata)gui_new('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

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