suppose there are two buttons in a GUI and from first button i browsed an image and now i want to use that image in the callback function of second button for further processing on that image with second button.???

how to use that please guide me because i am new to matlab

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F

[ayushi]

sir m not getting how to do that suppose i have a following code for button1:

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)
set(handles.edit3, 'Visible','off');
% Build the complete filename
[filename, pathname]=uigetfile( {'*.jpg';'*.jpeg';'*.gif';'*.png';'*.bmp'},'Select file'); 
 MyImage = strcat(pathname, filename);
%This code checks if the user pressed cancel on the dialog.
        if isequal(filename,0) || isequal(pathname,0)
            uiwait(msgbox ('User pressed cancel','failed','modal')  )
            hold on;
        else
            uiwait(msgbox('User selected image sucessfully','sucess','modal'));
            hold off;
             imshow(MyImage,'Parent',handles.axes2);
        end

handles.output = hObject;
guidata(hObject, handles);

and in second button i want to apply further processing on the browsed image like:

function pushbutton2_Callback(hObject, eventdata,handles)
    %hold off;
    if isfield(handles,'MyImage')
        axes2(handles.axes);
        hold on;
        % Convert RGB image to gray scale image
     image=rgb2gray(MyImage);
     hold off;
     imshow(image,'Parent',handles.axes2); 
     %gaussian filter:
hold on;
Iblur1 = imgaussfilt(image,2);
Iblur2 = imgaussfilt(image,4);
Iblur3 = imgaussfilt(image,8);
Display the original image and all the filtered images.

%figure(3)
hold off;
imshow(image,handles.axes2)
%title('Original image')
hold on;

%figure(4)
hold off;
imshow(Iblur1,handles.axes2)
%title('Smoothed image, \sigma = 2')
hold on;

%figure(5)
hold off;
imshow(Iblur2,handles.axes2)
%title('Smoothed image, \sigma = 4')
hold on;

%figure(6)
hold off;
imshow(Iblur3,handles.axes2)
%title('Smoothed image, \sigma = 8')

      end

its not showing image after processing in axes why? how can we resolve that error? please guide

[Walter Roberson]

In the first part you need

handles.MyImage = MyImage;

In the second part, after

if isfield(handles,'MyImage')

you need

MyImage = handles.MyImage;