[Insight-users] Manual drawing on fltkimage viewer display

[Luis Ibanez]

Hi Suja,

It will be great if you want to add this Polygon-Drawing
functionalities to the FLTK viewer in Insight Application.


You may want to take a look at the code in:


      InsightApplications/
                    Auxiliary/
                          FltkImageViewer


Once you get it working in your local system, you may want
to submit it as a  paper to the Insight Journal, so we can
put it in the pipeline of code to be added to ITK in future
releases.


As a suggestion, you may want to follow the track of the code
for "clicked points", since you probably can use them as
vertices of the polygon.


You may also want to look at the implementation in SNAP
(although this one uses VTK).


--


Another good option is to use VTK and take advantage of
the recently added

                   vtkImageTracerWidget.

http://www.vtk.org/doc/nightly/html/classvtkImageTracerWidget.html

         "This widget is primarily designed for
            manually tracing over image data."

This is part of a set of 3DWidget recently added to VTK in
order to facilitate the user interaction for Segmentation and
Registration method.

In this same group, the vtkSplineWidget may also be of interest:

http://www.vtk.org/doc/nightly/html/classvtkSplineWidget.html




Please let us know if you find any problems,


    Thanks


        Luis



---------------------
Suja S wrote:
> Thanks so much for the detailed answers ,Luis.
> I am developing a tool for brain tumor segmentation using ITK & FLTK.
> Presently it does region growing segmentation, but sometimes it is 
> preferred to have a ROI drawn by the end user to include or exclude a 
> particular region and also to edit the final segmented output. Right now 
> we use a different tool to do the drawing and editing, but it will be a 
> lot easier if it can be done in the fltk image viewer where the seed 
> points are clicked. That will make it a complete tool for the end user.
> I would love to add these capabilities to the image viewer if someone 
> can direct me. Do I change the code in InsightApplications/Auxillary for 
> that?
> Thanks again,
> Suja.
> 
> */Luis Ibanez <luis.ibanez at kitware.com>/* wrote:
> 
> 
>     Hi Suja,
> 
>     The FLTK image viewer is provi! ded as a minimal viewer, but with the
>     decent capabilities of taking into account the pixel size of a medical
>     image and respecting the natural orientation of the image.
> 
> 
>     There are basic capabilities in the fltk viewer for selecting clicked
>     points, but not for marking regions of interest, or for performing
>     pixel editing.
> 
> 
> 
>     For an application that provides those features, you may want to give
>     it a try to SNAP. This application is also distributed with ITK, in
>     the InsightApplications module. It requres VTK, ITK and FLTK.
> 
> 
>     SNAP is ultimately intended for performing LevelSet segmentations of
>     your images, but as a way of initializing those level sets, SNAP let
>     you define manual segmentations on a slice-by-slice basis. Of course,
>     you can simply use SNAP as a manual segmentation tool.
> 
>     You can get binary versions of SNAP from its web site:
> 
>     http://www.itksnap.org/
> 
>     as well as Tutorial:
> 
>     ! http://www.itksnap.org/docs/Tutorial.html
> 
> 
> 
> 
> 
>     Another tool that you may want to try is Slicer:
> 
>     www.slicer.org
> 
>     a tutorial for Slicer is available at:
> 
>     http://www.slicer.org/tutorial/
> 
>     The source code is open, and binary version are also available
>     for download.
> 
> 
> 
> 
>     The capabilities that you describe are commonly requested by end
>     users, and it may be a good idea to put them together in a minimal
>     tool that can be shared with the community.
> 
> 
> 
>     Please let us know if you have other questions.
> 
> 
>     Thanks
> 
> 
>     Luis
> 
> 
>     -------------
>     Suja S wrote:
>      > Hi,
>      > I am using fltk image viewer in my ITK application.
>      > Image viewer shows the 3D image with options of window leveling,
>     zooming
>      > etc.
>      > I would like to know whether it has the capability of user
>     drawing a ROI
>      > over the image and saving it. Also ! is it possible to do the manual
>      > editing on the final segmented image to add/remove pixels? Any
>     answer on
>      > this will be appreciated greatly.
>      > Thanks a lot,
>      > suja.
>      > >
>      > _______________________________________________
>      > Insight-users mailing list
>      > Insight-users at itk.org
>      > http://www.itk.org/mailman/listinfo/insight-users
> 
> 
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