Say for a reconstructed image (R) obtained from an original image(O), I want to design a GUI that shows the PSNR value in the text field. How will I implement this concept while clicking a pushbutton? Thankyou in advance.

% --- 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) i= imread('bday2007.jpg'); axes(handles.axes1) imshow(i); j=imread('h1.jpg'); axes(handles.axes2) imshow(j);