On Thu, 2008-02-07 at 18:08 +0100, Xabier Artaechevarria Artieda wrote:
> Hi all,
> First of all, I would like to thank MITK developers for the great
> SliceBasedSegmentation functionality.
> We think that the functionality does not properly update previously
> segmented regions, though. We have checked it by looking at the
> "ModifiedTime" property of the Data Manager.
> What we do is the following:
> 1. Open an image.
> 2. Segment it with our own functionality.
> 3. Check "Modified Time" property
> 4. Modify segmentation with "Add" tool using SliceBasedSegmentation.
> We "see" the new added regions.
> 5. Check "Modified Time" property -> it is the same as in step 3 (we
> do change from one object to another to be sure that the time is
> updated)
>
> We think that any segmentation functionality can be used to reproduce
> the problem.
> When we access the data object again for visualization using our
> functionality, it turns out to be the old one (step 2), the
> modifications done with SliceBasedSegmentation are gone.
> Could this be solved easily?
> Best regards,
Hallo Xabi,
I'm sorry, but I cannot reproduce your problem. I tested two things and
both were fine:
1. In mitkContourTool.cpp, after line 134, I added the following code:
std::cout << "image mtime: " << image->GetMTime() << std::endl;
This prints out the modified time of the segmentation after each use
of the Add/Substract tool. I changed the other tools in the same way,
always right after the use of OverwriteSliceImageFilter.
For all tools the output showed that the mitk::Image object of the
segmentation had an increased modified time after each use of the
tools.
2. I used a separate functionality to generate a binary segmentation
(of a vessel tree in this case). I then used SliceBasedSegmentation
to remove parts of this binary image. Afterwards I switched back
to the vessel segmentation functionality and created a surface from
the binary image. This surface included all changes that I had made
in SliceBasedSegmentation.
So I have no clue what could be wrong in your case. Could you give me
more detail? Two things that could help:
- You wrote "Check "Modified Time" property -> it is the same". What
exactly have you checked. There is no "property" in the MITK sense
called "Modified time". I guess you selected the segmentation and
pressed the "Info" button. There are lots of modified times shown for
the different members of mitk::Image. Are you sure that you checked
the one of the Image object (ok, the output of this dialog is very
badly structured)?
- Could you either post some of the relevant source code (esp. the part
where you "access the data object again") or give me access to it in
some other way (private mail or someting else)? Perhaps your code does
keep a copy of the segmentation somewhere and doesn't really use the
segmentation from the DataTree?
Best regards,
Daniel
--
Dipl.-Inform. Med. Daniel Maleike Phone: +49 6221 42 2326
Deutsches Krebsforschungszentrum Im Neuenheimer Feld 280
Medical and Biological Informatics (E130) 69120 Heidelberg
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