Howto updated/manipulated image between the callbacks

Question

Lluis Roca 2013-10-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/90127-howto-updated-manipulated-image-between-the-callbacks

评论： Walter Roberson 2013-10-14

Hi,

I have several push buttons that performs image analysis (e.g., load an image, convert to gray scale). I wish to share the updated/manipulated image between the callbacks but I get an error.

Therefore, how can I update the image and share it between the callbacks?

Code for example:

function loadImageButton_Callback(hObject, eventdata, handles)
% hObject    handle to loadImageButton (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
I = imread('D:\Image\tele.jpg');
axes(handles.imageAxes);
imshow(I); 
guidata(hObject, handles);
function convertGSbutton_Callback(hObject, eventdata, handles)
% hObject    handle to convertGSbutton (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
I = rgb2gray(I);
axes(handles.imageAxes);
imshow(I);
guidata(hObject, handles);