How to transfer a callback function of one pushbutton to other?

I have created two pushbuttons one of them will browse images having code % --- Executes on button press in Browse_image. function Browse_image_Callback(hObject, eventdata, handles) % hObject handle to Browse_image (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) [filename direc]=uigetfile('*jpg','pick a file') if filename==0 return end image1=imread(fullfile(direc,filename)); axes(handles.axes1); imshow(image1); handles.Browse_image=fullfile(direc,filename); guidata(hObject,handles); set(handles.text1,'String',filename); which is in working condition...I want help in writing the callback function for other pushbutton to convert the scale of browsed image RGB to gray.

Answer 1

[Geoff Hayes]

Rather than saving the path to the image to the handles structure like

 handles.Browse_image=fullfile(direc,filename);

why not save the image itself as

 handles.imageRgb = image1;
 guidata(hObject,handles);

That way, in your other callback, you have the image and are not required to reload it via imread

 function rgb2grayButton_Callback(hObject, eventdata, handles) 

   % get the image
   imageRgb = handles.imageRgb;

   % convert it to grayscale
   imgageGs = rgb2gray(imageRgb);

   % display it in some axes (to do)

[Smriti bhaleshwar]

Thanx Geoff,

Bt it is my projects requirement to select any one image from a folder of images for further process. I cant give particular image's name to read.

[Geoff Hayes]

Right - so you have selected that file with uigetfile and then save that image data (as read in by imread) to the handles structure for later processing.