How to update images in GUI?

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rupam baruah
rupam baruah el 7 de Dic. de 2015
Respondida: Walter Roberson el 7 de Dic. de 2015
I have a binary image with 4 objects. I am trying to remove objects by using imfreehand function. But the problem is: First I delete OBJECT2 using imfreehand. Then when I tried to delete OBJECT3 , OBJECT3 is deleted but again OBJECT2 reappeared in the image. How to update image after each operation?
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Walter Roberson
Walter Roberson el 7 de Dic. de 2015
Please show your code of how you delete objects.
rupam baruah
rupam baruah el 7 de Dic. de 2015
h=imfreehand();
bw=h.createMask();
handles.bi=handles.i4;
handles.bi(bw)=0;
imshow(handles.bi);
guidata(hObject,handles);
...... Here i4 is the initial image ....

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Walter Roberson
Walter Roberson el 7 de Dic. de 2015
Is that the same code as you use for OBJECT3 ? If so then the problem is that you are resetting to the original image handles.i4 each time. If you change the assignment to
if ~isfield(handles, 'bi')
handles.bi = handles.i4;
end
then it will only be done if it has not been done before and otherwise will proceed to work with the existing handles.bi that had the object deleted from it already.

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