Image Processing-imfreehand-Saving the line

Question

Paraskevas Papanikolaou 2012-6-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/40092-image-processing-imfreehand-saving-the-line

I would like to know if there is a way to save the line aftter using imfreehand function in order to recall it in the same picture someother time .More specifically here is the code it is the callback by a pushbutton i have in my GUI :

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)
%Matlab knows where to plot the data
axes(handles.axes10)
I=imshow(handles.Seg,'Displayrange',[]);
%where handles.seg is the grayscale image of a cancer area 
h=imfreehand
handles.posTelaplo=getPosition(h);
%saving the position 
handles.BW = createMask(h,I);
% imshow(BW);
[teliko mpla]=perim(handles.tumor,handles.BW
%perim is a function that generates the line made by imfreehand (the perimeter of cancer area)
imshow(teliko,'Displayrange',[]);
%showing the image along with the line made by imfreehand that surrounds the cancer area 
guidata(hObject,handles)

i would like to do something like this but i dont know what i should save and how excactly ,meaning in which form in order to recall it :

    % --- 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)
    %Matlab knows where to plot the data
    axes(handles.axes10)
    I=imshow(handles.Seg,'Displayrange',[]);
button5=questdlg('Would you like to draw a new region or use a previous one?','Freehandselection','Draw new region','Use a previous','No');
    if size(button5,2) > 12 
** (?can i do that or should i put just one string  with" _" in between?)**
    I=imshow(handles.Seg,'Displayrange',[]);
    h=imfreehand;
    handles.posTelaplo=getPosition(h);
    handles.BW = createMask(h,I);
     imshow(BW);
    [teliko mpla]=perim(handles.tumor,handles.BW);
    imshow(teliko,'Displayrange',[])
    button3 = questdlg('Do you want to save the area that you marked in order to use it another time?','Save freehand area','Yes','No','No');
    if size(button3,2) > 2

%HERE I WOULD LIKE TO SAVE THIS LINE OR AREA and run again perhaps the perim function

 else 
     %dont do nothing
       end
else
 * * HERE i would like to recall  the saved line /area ,for the  image that is used (perhaps saved together in a way ?)**
    end
    guidata(hObject,handles)
* Thanks in advance.*